Author: AODSON Engineering Team
High-temperature material selection is rarely a simple question of maximum temperature. A part that survives a brief exposure to 1000°C may fail early when the same temperature is continuous, loaded, cyclic, carburizing, sulfur-bearing, or combined with chloride contamination. Engineers also need to consider oxidation resistance, creep strength, thermal fatigue, castability, machinability, weldability, cost, and lead time.
This high temperature alloy selection guide compares common heat resistant stainless steels and nickel alloys used for castings, machined parts, fasteners, furnace parts, pump components, valve components, and custom OEM metal parts. It is written as a practical engineering reference rather than a universal material guarantee. Actual performance depends on service conditions, part geometry, manufacturing process, heat treatment, inspection requirements, and the user’s acceptance criteria.
Taizhou Aodson Metal Technology Co., Ltd. supports stainless steel castings, heat-resistant steel castings, high-temperature fasteners, CNC machined parts, pump and valve components, marine hardware, and custom OEM parts. The material recommendations below can help prepare a better RFQ and reduce the risk of premature failure.
Why High Temperature Alloy Selection Matters
Choosing the wrong material at elevated temperature can create failures that are expensive and difficult to diagnose. A part may look acceptable after installation, then gradually lose section thickness through oxidation scaling, deform under load because of creep, crack after repeated thermal cycling, or seize at threaded connections.
Common consequences include oxidation scaling, deformation, creep rupture, thermal fatigue cracking, fastener seizure, loss of strength, short service life, and unexpected shutdowns. In furnace equipment, a weak tray or fixture can damage product batches. In pump and valve assemblies, hot corrosion can combine with pressure and flow to accelerate leakage or wear. In high-temperature fasteners, oxidation, galling, and creep relaxation can reduce clamp load and make maintenance difficult.
A good alloy decision balances performance and manufacturability. The best material is not always the highest-cost nickel alloy. In many furnace fixtures, 310S stainless steel or 253MA may be a practical choice. In heavily loaded or severe corrosion applications, Inconel 625 or Inconel 718 may justify the higher cost. The correct answer is application-specific.
Key Selection Factors for High Temperature Alloys
Maximum service temperature. Maximum temperature is only the first screening point. Use typical published data as a starting point, then check atmosphere, load, exposure time, and thermal cycling.
Continuous vs intermittent heat exposure. Intermittent exposure may allow a material to survive higher peak temperatures than continuous service. Continuous operation usually makes creep, oxidation, and metallurgical stability more important.
Oxidizing atmosphere. High chromium and nickel levels help form protective oxide scales. 309 and 310S are commonly selected for oxidation resistance, while nickel alloys may be used when heat and corrosion are combined.
Reducing atmosphere. Some stainless steels that perform well in oxidizing conditions may behave differently in reducing environments. The atmosphere must be specified clearly in the RFQ.
Carburizing environment. Carburization can change surface chemistry and reduce ductility. Furnace fixtures, petrochemical parts, and heat-treatment equipment often require special attention to carburization resistance.
Sulfur-containing environment. Sulfidation can be aggressive at high temperature. Nickel alloys are not automatically superior in sulfur-bearing service, so the actual gas chemistry should be reviewed.
Thermal cycling. Repeated heating and cooling can cause thermal fatigue. Wall thickness transitions, sharp corners, welds, and uneven sections can increase cracking risk.
Mechanical loading. Parts under load need more than oxidation resistance. Creep strength and rupture strength become critical for trays, supports, bolts, springs, hangers, and pressure-related components.
Corrosion resistance. Hot chloride, acid, alkaline, marine, or chemical media may require alloys beyond standard heat-resistant stainless steel. Pump and valve components often need corrosion resistance and heat resistance together.
Manufacturing process. Investment casting, sand casting, centrifugal casting, forging, and CNC machining each have different limits. A material that is excellent on a datasheet may be difficult to cast or machine economically.
Cost and availability. Lead time, minimum order quantity, machining time, heat treatment, and inspection can affect total cost more than raw material price alone.
Common High Temperature Stainless Steels and Alloys
| Alloy | Typical Composition Summary | Strengths | Limitations | Common Applications | Relative Cost |
|---|---|---|---|---|---|
| 304 / 304L | 18Cr-8Ni austenitic stainless steel | Good general corrosion resistance, easy fabrication, widely available | Limited high-temperature strength and oxidation margin compared with 309/310S | General stainless parts, low to moderate heat exposure | Low |
| 316 / 316L | Cr-Ni-Mo stainless steel | Better chloride resistance than 304, common for marine and chemical parts | Not a dedicated heat-resistant alloy for severe high-temperature service | Pump and valve components, marine hardware, chemical components | Low-medium |
| 309 / 309S | Higher Cr and Ni than 304 | Better oxidation resistance than 304/316 | Less heat margin than 310S in many furnace applications | Burner parts, furnace components, heat shields | Medium |
| 310 / 310S / 310H | High chromium and nickel stainless steel | Strong oxidation resistance and heat resistance | May not be ideal for heavy-load long-term creep service | Furnace parts, trays, baskets, burner parts, kiln components | Medium-high |
| 253MA | Heat-resistant stainless with rare earth and nitrogen additions | Good oxidation resistance and thermal cycling behavior | Availability and fabrication requirements vary by region | Furnace fixtures, heat-treatment equipment | High |
| 314 | High Cr-Ni-Si stainless steel | Good oxidation resistance at elevated temperature | Less common than 310S; availability can be limited | Furnace parts, heat-resistant components | High |
| HK40 | Cast heat-resistant Cr-Ni alloy | Good castability and high-temperature stability | Application-specific; machining can be difficult | Radiant tubes, furnace fixtures, cast furnace parts | Application-specific |
| HP40 | Higher nickel cast heat-resistant alloy | Good creep strength and high-temperature cast performance | Higher cost and specialized casting requirements | Petrochemical furnace parts, radiant tubes, trays | High |
| 330 | High nickel heat-resistant alloy | Good oxidation and carburization resistance | Higher cost than 310S | Furnace hardware, heat-treatment equipment | High |
| Inconel 600 | Nickel-chromium alloy | Good oxidation resistance and resistance to many corrosive environments | Higher cost; not as strong as 718 for high-load applications | Furnace parts, chemical processing, heat treatment equipment | High |
| Inconel 625 | Nickel-chromium-molybdenum alloy | Excellent corrosion resistance with good high-temperature strength | High material and machining cost | Chemical, marine, severe corrosion, hot corrosive pump and valve parts | Very high |
| Inconel 718 | Precipitation-hardening nickel superalloy | Excellent strength, fatigue resistance, and creep resistance | Expensive and difficult to machine; heat treatment sensitive | High-load elevated-temperature components, fasteners, precision machined parts | Very high |
310S Stainless Steel: When It Is the Right Choice
310S stainless steel is one of the most widely used heat resistant stainless steels for furnace parts and high-temperature fabrication. Its high chromium and nickel content supports good oxidation resistance and heat resistance in many oxidizing environments. Suppliers often list oxidation resistance around 2000°F under mildly cyclic conditions, but actual service limits depend on atmosphere, load, part design, and exposure time.
310S is commonly selected for furnace parts, burner components, heat treatment fixtures, kiln components, trays, baskets, heat shields, and custom heat-resistant stainless steel parts. It is often a practical choice when the main requirements are oxidation resistance, moderate mechanical load, availability, and reasonable manufacturing cost.
The limitations are important. 310S may resist scaling well, but oxidation resistance is not the same as creep strength. If a part carries heavy load for long periods at high temperature, HK40, HP40, 330, Inconel 600, or Inconel 718 may need to be evaluated. Geometry also matters. Thin walls, sharp transitions, and welded joints can change service life.
310, 310S, and 310H are related but not identical. 310S has lower carbon and is often used where weldability is important. 310H has higher carbon for improved high-temperature strength in certain conditions. The final choice should follow the applicable standard, operating condition, and drawing requirement.
309 vs 310S Stainless Steel
| Factor | 309 / 309S | 310S |
|---|---|---|
| Chromium and nickel | Higher than 304, lower than 310S | Higher Cr and Ni content |
| Heat resistance | Good for many burner and furnace components | Typically better heat and oxidation margin |
| Oxidation resistance | Better than 304/316 | Excellent among common heat-resistant stainless steels |
| Cost | Usually lower than 310S | Usually higher than 309 |
| Availability | Generally available | Generally available but higher cost |
| Typical use | Burner parts, heat shields, moderate furnace parts | Furnace trays, baskets, kiln parts, heat treatment fixtures |
Choose 309 when the application needs better heat resistance than 304/316 but does not require the higher oxidation margin of 310S. Choose 310S when the part faces higher oxidizing temperatures, more severe furnace service, or when the design has historically performed better with higher chromium and nickel content.
310S vs 253MA vs 330
| Application Need | 310S | 253MA | 330 |
|---|---|---|---|
| General furnace hardware | Good practical choice | Strong option when available | Good but higher cost |
| Thermal cycling | Good, depending on design | Often strong in cyclic heat service | Good in selected furnace environments |
| Oxidation resistance | Excellent for common stainless grade | Very good | Very good |
| Carburization resistance | Moderate to good depending on atmosphere | Application-specific | Often selected for carburizing furnace conditions |
| Cost and availability | Usually more accessible | Can be limited by market | Higher cost |
| Casting and fabrication | Common for fabrication and some casting requests | Requires supplier capability | Requires supplier capability |
For many heat-treatment fixtures, 310S provides a strong balance of cost and performance. 253MA may be chosen for demanding thermal cycling. Alloy 330 may be considered when carburization resistance and nickel-rich furnace performance are more important than initial material cost.
HK40 and HP40 Heat Resistant Castings
HK40 and HP40 are cast heat-resistant alloys used where casting performance, creep strength, and high-temperature stability are important. These grades are common in furnace fixtures, radiant tubes, heat treatment trays, petrochemical furnace parts, and other high-temperature cast components.
Heat resistant steel castings can be the right choice when the part geometry is complex, when wall sections are thick, when near-net-shape manufacturing reduces machining waste, or when cast microstructure is part of the intended design. Investment casting may be used for smaller precision parts, while sand casting or centrifugal casting may be used for larger furnace and petrochemical components.
HK40 is often used for cast furnace components where stability and castability are important. HP40 generally provides higher nickel content and can offer improved high-temperature creep performance in selected service conditions. However, these alloys are not generic replacements for every furnace part. Chemistry, casting design, heat treatment, inspection, and service atmosphere must be reviewed.
Machining can be difficult because heat-resistant cast alloys are hard on tools and may require slower cutting speeds. Cost is also application-specific. AODSON can review drawings for heat-resistant steel castings and help determine whether investment casting, sand casting, centrifugal casting, or casting plus CNC finishing is appropriate.
Inconel 600, 625 and 718
Inconel 600 is a nickel-chromium alloy known for good oxidation resistance and resistance to many corrosive environments. It is used in furnace parts, chemical processing, heat treatment equipment, and components that need a nickel-rich alloy rather than a standard stainless steel.
Inconel 625 is a nickel-chromium-molybdenum alloy with strong corrosion resistance and good high-temperature strength. It is often considered for chemical, marine, offshore, and severe corrosion environments. In pump and valve components, 625 may be selected when hot corrosive media is beyond the practical range of 316L, duplex stainless steel, or super duplex stainless steel.
Inconel 718 is a nickel-based precipitation-hardening superalloy. It is often selected where high load and elevated temperature coexist. Many datasheets describe 718 as suitable for high-temperature service around 700°C / 1300°F depending on heat treatment, product form, and application. It offers excellent strength, fatigue resistance, and creep resistance, but it is more difficult and expensive to machine than common stainless steels.
| Grade | Main Advantage | Typical Uses | Limitations |
|---|---|---|---|
| Inconel 600 | Oxidation and corrosion resistance | Furnace parts, chemical processing, heat treatment equipment | Higher cost; not the strongest nickel alloy for load-bearing service |
| Inconel 625 | Severe corrosion resistance | Marine, chemical, hot corrosive pump and valve parts | High cost and machining difficulty |
| Inconel 718 | High strength, fatigue, and creep resistance | High-temperature fasteners, machined components, loaded parts | Heat treatment sensitive, difficult to machine |
Temperature Range Selection Chart
The chart below is a practical starting point, not a guaranteed limit. Actual service temperature depends on atmosphere, load, time, thermal cycling, corrosion, surface condition, and product design.
| Typical Temperature Range | Materials Often Considered | Notes |
|---|---|---|
| Below 600°C | 304, 316, 316L, duplex grades, selected nickel alloys | Corrosion and mechanical requirements may dominate |
| 600–800°C | 309, 310S, 253MA, Inconel 600, selected fastener alloys | Check strength loss, oxidation, and thermal cycling |
| 800–1000°C | 310S, 253MA, 314, 330, HK40, HP40, Inconel 600 | Furnace atmosphere and load become critical |
| 1000–1100°C | 310S, 314, 330, HK40, HP40, specialized nickel alloys | Evaluate creep, carburization, oxidation, and geometry carefully |
| Above 1100°C | Application-specific heat-resistant cast alloys and nickel alloys | Requires detailed engineering review and service data |
Oxidation Resistance vs Creep Strength
Oxidation resistance means the surface resists scaling and material loss in a high-temperature atmosphere. Creep strength means the part resists slow deformation under load over time. These are different properties, and confusing them is a common cause of failure.
For example, 310S stainless steel may resist oxidation well in many furnace conditions, but it may not be the best material for a heavily loaded tray that must hold weight continuously at elevated temperature. Inconel 718 may be chosen when high strength, fatigue resistance, and creep performance are critical, even if the maximum temperature is not as high as a furnace fixture application.
A material selection table should never be used alone. Engineers should also ask whether the part is loaded in tension, bending, compression, or shear; whether the load is constant or cycling; whether thermal expansion is constrained; and whether service life is measured in hours, months, or years.
Thermal Cycling and Thermal Fatigue
Thermal cycling creates repeated expansion and contraction. When heating and cooling are uneven, different areas of the part expand at different rates. Stress concentrates near sharp corners, welds, holes, ribs, and wall-thickness transitions. Over time, cracks can form even when the material has good oxidation resistance.
Alloy selection matters, but design geometry matters just as much. Avoid sharp corners where possible, use generous radii, maintain balanced wall thickness, and reduce unnecessary section changes. For castings, gating, feeding, shrinkage control, and post-casting inspection also affect reliability. For CNC machined parts, tool marks, notches, and surface finish can influence fatigue behavior.
When thermal cycling is frequent, 253MA, 310S, 330, HK40, HP40, or nickel alloys may be evaluated depending on load and atmosphere. The final decision should consider test history, supplier experience, and the customer’s actual furnace cycle.
High Temperature Fasteners
High-temperature bolts, nuts, washers, and threaded rods require special attention because fasteners must maintain clamp load while resisting oxidation, galling, creep relaxation, and thread seizure. A fastener material that is acceptable at room temperature may lose strength rapidly at elevated temperature.
310S may be considered for heat-resistant stainless steel fasteners in oxidizing environments with moderate load. However, when clamp load is critical, when operating temperature is high for long periods, or when fatigue and creep are concerns, alloys such as 660, 718, 625, or other nickel alloys may be considered. The correct choice depends on load, temperature, atmosphere, mating material, lubrication, and maintenance requirements.
Thread galling is a practical problem with stainless steel fasteners. Using compatible nut and bolt combinations, anti-seize compounds approved for the service temperature, proper surface finish, and correct tightening procedure can reduce seizure risk. At high temperature, fastener design should also account for thermal expansion and relaxation.
High Temperature Castings vs CNC Machined Parts
| Process | Best Use | Considerations |
|---|---|---|
| Investment casting | Complex precision parts and near-net-shape components | Good detail, lower machining allowance, size limitations |
| Sand casting | Larger heat-resistant cast components | Flexible size range, rougher surface, more machining allowance |
| Centrifugal casting | Tubes, rings, sleeves, and rotational parts | Good density for suitable geometries |
| CNC machining | Tight-tolerance parts, prototypes, finishing operations | Material waste and tool wear can be high for nickel alloys |
| Forging | High-strength parts with favorable grain flow | Tooling and quantity requirements may be higher |
Casting is often better when the part has complex geometry, thick sections, internal features, or high material cost that makes full machining inefficient. CNC machining is better when tight tolerances, small batches, or precise surfaces are required. Many high-temperature parts use casting plus CNC finishing to balance geometry, cost, and tolerance.
Application-Based Material Selection
Furnace Parts
Furnace parts may use 310S, 253MA, HK40, HP40, 330, or Inconel 600 depending on atmosphere, temperature, and load. For trays and baskets, oxidation resistance and thermal fatigue are important. For supports and loaded parts, creep strength is critical.
Heat Treatment Fixtures
Heat treatment fixtures often use 310S, 253MA, HK40, or HP40. Selection should consider cycle frequency, load, quenching exposure, fixture geometry, and expected service life.
Burner Components
Burner components may use 309, 310S, or Inconel 600 depending on temperature, oxidation, flame exposure, and corrosion risk. Distortion and thermal cycling should be reviewed.
Pump and Valve Components
Pump and valve components may require 316, 316L, duplex stainless steel, super duplex stainless steel, or Inconel 625 depending on corrosion and temperature. For hot corrosive media, corrosion resistance can be more important than oxidation resistance alone.
Marine High-Temperature Components
Marine components often combine chloride exposure with mechanical loading. 316L, duplex stainless steel, super duplex stainless steel, and Inconel 625 may be evaluated depending on temperature, chloride concentration, and maintenance conditions.
Petrochemical Furnace Parts
Petrochemical furnace parts may use HK40, HP40, 330, or nickel alloys. Creep strength, carburization, sulfidation, and long-term stability are usually central to the material decision.
High Temperature Fasteners
High-temperature fasteners may use 310S, 660, 718, or 625 depending on load and temperature. Always review clamp load retention, thread galling, oxidation, and maintenance access.
Cost and Availability Considerations
304 and 316 are generally lower-cost stainless steels, while 309 and 310S are medium-high cost because of higher alloy content. 253MA and 330 are usually higher cost and may have longer lead times. HK40 and HP40 are application-specific cast alloys. Inconel 600, 625, and 718 are high-cost nickel alloys, and machining can add significant cost.
Choosing the most expensive material is not always the best engineering decision. A well-designed 310S furnace part may outperform an over-specified alloy with poor geometry. A cast heat-resistant steel part may be more economical than machining a large nickel alloy component from bar. Total lifecycle cost should include downtime, maintenance, inspection, replacement frequency, and manufacturing lead time.
Common Mistakes in High Temperature Alloy Selection
- Selecting only by maximum temperature.
- Ignoring the service atmosphere.
- Ignoring continuous vs intermittent exposure.
- Ignoring creep strength.
- Using 316 for severe heat without checking strength loss.
- Using 310S for heavy-load creep service without evaluation.
- Ignoring thermal cycling.
- Ignoring carburization.
- Ignoring sulfidation.
- Ignoring chloride corrosion.
- Ignoring machining difficulty.
- Ignoring casting defects caused by poor geometry.
- Ignoring weldability.
- Ignoring lead time.
- Ignoring total lifecycle cost.
- Assuming one alloy grade works for every furnace atmosphere.
- Using room-temperature strength data for high-temperature design.
- Failing to specify inspection standards in the RFQ.
High Temperature Alloy Selection Checklist
- Working temperature and peak temperature.
- Continuous or intermittent use.
- Atmosphere: oxidizing, reducing, carburizing, sulfur-bearing, or chloride-containing.
- Contact media and corrosion risk.
- Mechanical load and required strength.
- Creep and rupture requirements.
- Thermal cycling frequency.
- Part geometry, wall thickness, and sharp corners.
- Casting, forging, or CNC machining process.
- Surface finish requirement.
- Heat treatment requirement.
- Quantity and target lead time.
- Drawing format and tolerances.
- Inspection standard and acceptance criteria.
Case Studies
Case 1: Furnace Tray Material Upgrade
A furnace tray made from 304 stainless steel may scale, distort, or crack when exposed to repeated high-temperature cycles. Upgrading to 310S can improve oxidation resistance and heat resistance for many furnace environments. If the tray carries heavy load for long periods, HK40 or HP40 heat resistant castings may be evaluated. The decision should compare load, cycle frequency, tray geometry, and replacement cost.
Case 2: High Temperature Fastener Failure
A stainless steel bolt may seize during maintenance because of oxidation and galling. It may also lose clamp load because of creep relaxation. A better fastener selection may include 310S for moderate heat exposure, or 660/718/625 when load and temperature are more demanding. Thread lubrication and installation procedure are part of the solution.
Case 3: Pump Component in Hot Corrosive Media
A pump component exposed to hot corrosive media should not be selected only by temperature. 316L may be suitable for moderate corrosion, while 2205 or 2507 duplex stainless steel may offer improved chloride resistance. Inconel 625 may be considered for severe corrosion or marine chemical service. Flow velocity, pH, chloride level, and temperature must be reviewed.
Case 4: CNC Machined Inconel 718 Component
Inconel 718 may be selected when high strength and elevated-temperature performance are required. However, machining time and tool wear increase significantly compared with common stainless steel. Designers should review tolerances, radii, surface finish, and allowance to reduce unnecessary machining cost while maintaining function.
FAQ
Is 310S better than 316 for high temperature?
For many oxidizing high-temperature applications, 310S is typically better than 316 because it has higher chromium and nickel content. However, 316 may be better when chloride corrosion is the main concern at lower temperatures.
What is the difference between 310 and 310S?
310S is the lower-carbon version of 310 and is often selected for improved weldability. 310H has higher carbon and may be used where high-temperature strength is required.
Is Inconel 718 better than 310S?
Inconel 718 is not simply “better.” It offers much higher strength and fatigue resistance, but it is more expensive and difficult to machine. 310S may be more practical for many furnace parts where oxidation resistance is the main requirement.
What alloy is best for furnace parts?
Common options include 310S, 253MA, HK40, HP40, 330, and Inconel 600. The best choice depends on temperature, atmosphere, load, and thermal cycling.
What material is best for high-temperature fasteners?
310S, 660, 718, and 625 may be considered depending on load, temperature, oxidation, corrosion, and clamp load requirements.
Can 316 stainless steel be used at 800°C?
316 can be exposed to elevated temperatures in some conditions, but it is not usually the first choice for severe high-temperature service. Strength loss, oxidation, and service time must be evaluated.
What is creep resistance?
Creep resistance is the ability to resist slow deformation under load at elevated temperature over time.
What is oxidation resistance?
Oxidation resistance is the ability of a material surface to resist scaling and material loss in an oxidizing high-temperature environment.
Which alloy is best for thermal cycling?
310S, 253MA, 330, HK40, HP40, and nickel alloys may be considered. Geometry and wall thickness are just as important as alloy grade.
Can high-temperature alloys be investment cast?
Yes, many heat-resistant stainless steels and nickel alloys can be investment cast if the foundry has suitable process control and inspection capability.
Is Inconel 718 difficult to machine?
Yes. Inconel 718 is known for high strength and work-hardening behavior, which increases machining time, tool wear, and cost.
Why do high-temperature parts crack?
Cracking can result from thermal fatigue, creep, oxidation, poor geometry, uneven wall thickness, weld stress, casting defects, or a combination of factors.
What is the difference between HK40 and HP40?
Both are cast heat-resistant alloys. HP40 generally has higher nickel content and may offer improved creep performance in selected applications, while HK40 remains common for cast furnace components.
What information should I provide for a quotation?
Provide drawings, material requirements, operating temperature, atmosphere, load, quantity, tolerance, surface finish, heat treatment, and inspection standard.
Is 310S suitable for heat resistant castings?
310S can be used for some heat-resistant casting applications, but HK40, HP40, and other cast alloys may be better for specialized furnace castings.
When should I choose Inconel 625?
Choose Inconel 625 when severe corrosion resistance is required together with good high-temperature performance, especially in chemical, marine, or hot corrosive media.
When should I choose Inconel 600?
Inconel 600 is often considered for furnace and chemical processing parts requiring nickel-chromium oxidation and corrosion resistance.
Can alloy selection reduce furnace downtime?
Yes. Correct alloy selection, good geometry, and proper manufacturing can reduce distortion, cracking, oxidation, and replacement frequency.
Are nickel alloys always better than stainless steel?
No. Nickel alloys are expensive and may not be necessary. A stainless steel such as 310S may be the best balance for many heat-resistant parts.
Can AODSON help review drawings?
Yes. AODSON can review drawings, material requirements, operating temperature, and working environment to recommend suitable materials for stainless steel castings, heat-resistant steel castings, high-temperature fasteners, CNC machined parts, and OEM components.
Internal Link Suggestions
- Heat Resistant Steel Castings
- Precision Casting
- CNC Machining
- Stainless Steel Fasteners
- Marine Hardware
- Duplex Stainless Steel Castings
Conclusion
High-temperature alloy selection must balance temperature, atmosphere, load, corrosion, thermal cycling, manufacturing process, and cost. 310S stainless steel is a practical and widely used heat resistant stainless steel for many furnace parts, while HK40 and HP40 are important for heat resistant castings. Inconel 600, 625, and 718 are valuable when nickel-alloy oxidation resistance, corrosion resistance, or high strength is required.
AODSON can help review drawings, material requirements, operating temperature, and working environment to recommend suitable materials for stainless steel castings, heat-resistant steel castings, high-temperature fasteners, CNC machined parts, pump and valve components, and OEM metal parts.
