AISI 310 Stainless Steel Plate | 310 China steel mill-Direct Supply
What is AISI 310 Stainless Steel Plate?
As a professional China steel mill-Direct Supply and stainless steel plate supplier, SHH STEEL is pleased to present AISI 310 Stainless Steel Plate.
AISI 310 (UNS S31000) is a heat-resisting austenitic stainless steel containing approximately 24–26% chromium and 19–22% nickel. The very high alloy content provides outstanding resistance to oxidation and scaling at elevated temperatures, significantly superior to the 304, 309 and lower-alloy grades. It is widely used for furnace components, radiant tubes, heat-treatment equipment, kiln parts, petrochemical process equipment and other applications involving continuous or intermittent exposure to severe high-temperature oxidizing atmospheres.
The grade is non-magnetic in the annealed condition and offers good toughness. While standard AISI 310 has a higher carbon content, the low-carbon version 310S is often preferred for welded constructions, and 310H is selected when higher creep strength is required.
SHH STEEL supplies AISI 310 as true China steel mill-Direct Supply, sourcing directly from major Chinese stainless steel mills. This model delivers competitive mill pricing, consistent quality, complete heat traceability and reliable delivery. SHH STEEL offers AISI 310 in plate and sheet form across a practical range of thicknesses and surface finishes suitable for high-temperature service.
AISI 310 is frequently compared with a240 309s, a240 310s, a240 310h, a240 304, a240 321 and a240 316l when selecting materials for elevated-temperature applications. SHH STEEL provides technical support to help customers choose the most appropriate grade.
Material Specification
| Specification Element | Requirement | SHH STEEL Compliance |
|---|---|---|
| Grade | AISI 310 / UNS S31000 | Confirmed |
| Related Standards | ASTM A240, ASME SA240, related high-temperature specs | Available |
| Product Form | Plate, Sheet | Available |
| Delivery Condition | Solution Annealed | Standard |
| Thickness Range | 1 mm – 100 mm (thicker available on request) | Custom sizes supported |
| Width | Up to 2000–3000 mm | Available |
| Length | Up to 12000 mm or cut-to-length | Available |
| Surface Finish | No.1, 2B, and others on request | Available |
| Certification | EN 10204 3.1 / Mill Test Certificate | Available |
SHH STEEL can supply AISI 310 dual-certified to ASTM A240 / ASME SA240 when required by the project. Related low-carbon and high-carbon variants such as a240 310s and a240 310h are also available.
Chemical Composition
Typical Chemical Composition of AISI 310 (UNS S31000):
| Element | Content (%) |
|---|---|
| Carbon (C) | ≤ 0.25 |
| Silicon (Si) | ≤ 1.50 |
| Manganese (Mn) | ≤ 2.00 |
| Phosphorus (P) | ≤ 0.045 |
| Sulfur (S) | ≤ 0.030 |
| Chromium (Cr) | 24.00 – 26.00 |
| Nickel (Ni) | 19.00 – 22.00 |
| Nitrogen (N) | ≤ 0.10 |
| Iron (Fe) | Balance |
The very high chromium (24–26%) and nickel (19–22%) contents are the defining features of AISI 310. These elevated levels provide outstanding resistance to oxidation and scaling at temperatures up to approximately 1100°C in continuous service (depending on the environment and thermal cycling). SHH STEEL carefully controls composition to ensure reliable high-temperature performance.
Mechanical Properties
Annealed Condition (typical values)
| Property | Value |
|---|---|
| Tensile Strength | ≥ 515 MPa (75 ksi) |
| Yield Strength (0.2%) | ≥ 205 MPa (30 ksi) |
| Elongation (in 50 mm) | ≥ 40% |
| Hardness | ≤ 217 HB |
At elevated temperatures, AISI 310 retains useful strength and outstanding oxidation resistance. For applications requiring higher creep strength, the controlled high-carbon version a240 310h is preferred. SHH STEEL supplies material with consistent high-temperature properties.
Physical Properties Density is approximately 7.90 g/cm³. The grade is non-magnetic in the annealed condition. Melting range is approximately 1400–1450°C.
Material Comparison
| Grade | Cr (%) | Ni (%) | Max Service Temp (approx.) | Oxidation Resistance | Typical Preference |
|---|---|---|---|---|---|
| AISI 304 | 18–20 | 8–10.5 | ~870°C | Good | General purpose |
| AISI 309S | 22–24 | 12–15 | ~1000–1100°C | Very Good | High-temperature oxidizing service |
| AISI 310 | 24–26 | 19–22 | ~1100°C | Excellent | Severe high-temperature service |
| AISI 310S | 24–26 | 19–22 | ~1100°C | Excellent | Welded severe high-temperature service |
| AISI 310H | 24–26 | 19–22 | ~1100°C | Excellent | High-temp strength + oxidation |
| AISI 321 | 17–19 | 9–12 | ~900°C | Good | Stabilized high-temp welded service |
AISI 310 offers the highest oxidation resistance among the common heat-resisting austenitic grades. Compared with a240 309s, it provides superior performance in severe high-temperature oxidizing environments. For welded constructions, SHH STEEL often recommends the low-carbon version a240 310s. When higher creep strength is required, a240 310h is preferred.
Corrosion Resistance
AISI 310 provides outstanding resistance to oxidation and scaling in air and oxidizing atmospheres at elevated temperatures. It also offers good resistance to atmospheric corrosion and many mild chemical environments at room temperature.
In sulfur-containing, carburizing or reducing atmospheres, performance may be limited. For aqueous chloride environments, SHH STEEL recommends a240 316l or a240 2205.
Weldability
AISI 310 has good weldability using standard fusion welding methods. Matching or 310/310S filler metals are commonly used. Due to the higher carbon content of standard 310, the low-carbon version a240 310s is preferred for welded constructions to reduce the risk of intergranular corrosion.
SHH STEEL recommends proper welding procedures and, where necessary, post-weld solution annealing for critical high-temperature service.
Heat Treatment
AISI 310 is normally supplied in the solution-annealed condition by SHH STEEL.
Recommended solution annealing temperature range is 1040–1150°C, followed by rapid cooling. Proper annealing optimizes both room-temperature ductility and high-temperature performance. SHH STEEL controls heat treatment to ensure consistent quality for elevated-temperature applications.
Surface Finishes
| Finish | Description | Typical Use / Keywords |
|---|---|---|
| No.1 | Hot-rolled, annealed and pickled | AISI 310 No.1 – most common for industrial high-temp plate |
| 2B | Cold-rolled, annealed, pickled, skin-passed | AISI 310 2B – thinner plates |
| Special | Ground or custom finishes | AISI 310 Special – on request |
SHH STEEL regularly supplies AISI 310 in No.1 finish, which is the preferred condition for most high-temperature plate applications.
Tolerances
Dimensional tolerances for AISI 310 Stainless Steel Plate supplied by SHH STEEL generally conform to ASTM A480 practices.
Typical available size range is thickness 1 mm – 100 mm, width up to 2000–3000 mm, and length up to 12000 mm or cut-to-length. SHH STEEL provides precise dimensional control and can support tighter tolerances when required.
Equivalent Material Grades
| Grade / Designation | Standard / Region | Notes |
|---|---|---|
| AISI 310 | — | — |
| UNS S31000 | Unified Numbering System | — |
| ASTM A240 Type 310 | ASTM A240 | When dual certified |
| 1.4841 / X15CrNiSi25-20 | EN (Europe) | European equivalent |
| 1.4845 / X8CrNi25-21 | EN (Europe) | Closely related |
| SUS310 | JIS G4305 (Japan) | Japanese equivalent |
| 20Cr25Ni20 / 0Cr25Ni20 | GB/T (China) | Chinese equivalent |
| Related 310S / 310H | Multiple | Low-carbon / high-carbon variants |
Related grades for comparison include a240 310s, a240 310h, a240 309s, a240 304, a240 321 and a240 316l.
Applications
AISI 310 is selected for applications requiring outstanding high-temperature oxidation resistance. Typical applications of AISI 310 include:
| Industry / Sector | Typical Components / Equipment (with keywords) |
|---|---|
| Heat Treatment & Furnaces | AISI 310 furnace components, radiant tubes, fixtures, trays |
| Industrial Heating | AISI 310 kiln parts, muffles, supports and retorts |
| Power Generation | AISI 310 high-temperature ducting and structural parts |
| Petrochemical & Refining | AISI 310 furnace linings and process equipment |
| Chemical Processing | AISI 310 high-temperature vessels and components |
| General High-Temperature Service | AISI 310 equipment operating in severe oxidizing atmospheres |
SHH STEEL supplies AISI 310 for these severe elevated-temperature applications with consistent quality. For related industry solutions, see our energy industry, petrochemical industry and equipment manufacturing pages. Supporting services include steel cutting services and steel welding services.
Why Choose SHH STEEL
SHH STEEL is a China steel mill-Direct Supply specializing in stainless steel plate and sheet. By working directly with major Chinese stainless steel mills, SHH STEEL supplies AISI 310 with the following advantages:
- Genuine China steel mill-Direct Supply pricing
- Consistent quality and complete heat traceability
- Full Mill Test Certificates (EN 10204 3.1)
- High Cr-Ni material optimized for severe high-temperature oxidation resistance
- Flexible dimensions and surface finishes (including AISI 310 No.1 and AISI 310 2B)
- Technical support for selection among 309S, 310, 310S, 310H and related grades
- Value-added services including steel cutting services, steel welding services and worldwide shipping service
For more information about our company and full product range, please visit China steel Mill Agent-SHH STEEL.
FAQ
- What is the main advantage of AISI 310 over AISI 309?The significantly higher chromium (24–26%) and nickel (19–22%) contents provide superior oxidation resistance and higher maximum service temperature. SHH STEEL recommends 310 for severe high-temperature oxidizing service.
- Should I choose AISI 310 or AISI 310S?AISI 310S (low carbon) is preferred for welded constructions to reduce the risk of intergranular corrosion. SHH STEEL can supply both versions according to project requirements.
- How does AISI 310 compare with AISI 310H?AISI 310H has controlled higher carbon for improved high-temperature strength and creep resistance. SHH STEEL recommends 310H when long-term strength under load is important.
Conclusion
AISI 310 Stainless Steel Plate is a high-chromium, high-nickel (25Cr-20Ni) heat-resisting austenitic grade that offers outstanding oxidation resistance and good strength at elevated temperatures. It is the material of choice for severe high-temperature service in furnace components, radiant tubes, heat-treatment equipment, kiln parts and petrochemical process equipment.
As a professional China steel mill-Direct Supply, SHH STEEL provides high-quality AISI 310 Stainless Steel Plate with competitive pricing, full certification and complete technical support.
Contact SHH STEEL today for stock availability, surface finish options (including AISI 310 No.1 and AISI 310 2B), or a competitive quotation.
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