310 Stainless Steel Coil – The Ultimate High-Temperature Austenitic Alloy for 1150 °C Service
When your equipment faces continuous temperatures above 800 °C, 310 Stainless Steel Coil is the material you can trust. With 25 % chromium and 20 % nickel, this austenitic grade delivers exceptional oxidation resistance up to 1100 °C in cyclic conditions and continuous service to 1150 °C—far exceeding the limits of 304, 321, or 让 even 309. Its high chromium content forms a tenacious oxide scale that resists spalling, while the nickel level maintains austenitic stability and ductility after prolonged thermal exposure. From radiant tubes and kiln linings to boiler baffles and thermocouple protection tubes, 310 Stainless Steel Coil provides the creep strength, sulfidation resistance, and structural reliability that high-temperature industries demand.
310 Stainless Steel Coil – Heavy-Duty No.1 Finish for Extreme High-Temperature Service up to 1150 °C
Key Features & Benefits
- 25 Cr / 20 Ni chemistry – maximum scaling resistance in air and oxidizing gases
- Continuous use to 1150 °C; intermittent to 1100 °C with minimal scale growth
- Excellent sulfidation and carburization resistance in petrochemical atmospheres
- Higher creep rupture strength than 304H or 321 above 600 °C
- Good weldability; post-weld anneal not required for most high-temp services
- Available in both 310 (S31000) and low-carbon 310S (S31008) variants
- Full ASTM A240 / ASME SA-240 compliance, PED 2014/68/EU certified
Technical Specifications
Table 1 – Chemical Composition (ASTM A240)
| Element | Min % | Max % |
|---|---|---|
| Cr | 24.0 | 26.0 |
| Ni | 19.0 | 22.0 |
| C (310) | — | 0.25 |
| C (310S) | — | 0.08 |
| Mn | — | 2.00 |
| Si | — | 1.50 |
| P | — | 0.045 |
| S | — | 0.030 |
| Fe | Balance |
Table 2 – Mechanical & Physical Properties
| Property | Room Temp. | 800 °C | 1000 °C |
|---|---|---|---|
| Tensile Strength | 515 MPa (75 ksi) min. | 210 MPa (30 ksi) approx. | 100 MPa (15 ksi) approx. |
| Yield Strength (0.2 %) | 205 MPa (30 ksi) min. | 120 MPa (17 ksi) approx. | 60 MPa (9 ksi) approx. |
| Elongation in 2" | 40 % min. | 25 % | 30 % |
| Hardness HRB | 95 max. | — | — |
| Density | 7.9 g/cm³ (0.286 lb/in³) | — | — |
| Thermal Expansion | 15.9 µm/m·K (20–100 °C) | — | — |
Standard Sizes & Finishes
| Thickness (mm) | Width (mm) | Coil Weight (tons) | Finish Options |
|---|---|---|---|
| 0.40 – 1.00 | 1000 / 1219 / 1250 | 3–12 | 2B, BA |
| 1.20 – 3.00 | 1000 / 1219 / 1250 / 1500 | 5–20 | 2B, No.4, HL |
| 4.00 – 10.0 | 1219 / 1500 / 2000 | 10–25 | No.1, HRAP |
| 12.0 – 50.0 | 1500 / 2000 | 15–30 | No.1, Pickled |
Custom slit widths from 20 mm; coil ID 508 or 610 mm.
Main Applications
- Furnace radiant tubes, muffles, retorts, baskets
- Kiln linings, cement pre-heater shelves, sintering plates
- Petrochemical reformer tubes, ethylene-cracker fittings
- Power-generation boiler baffles, super-heater supports
- Heat-treatment fixtures, thermocouple protection tubes
- Thermal oxidizer shells, flare stacks, incinerator internals
- Molybdenum and sulfur recovery reactor shells
Always in Stock – Large Inventory of 310 Stainless Steel Coil with Full Traceability & Mill Test Certificates
Why Choose Our 310 Stainless Steel Coil
- TUV & PED 2014/68/EU certified mill – EN 10204 3.1 & 3.2 MTC supplied free
- 120 000 ton annual capacity – 5-day lead time for standard sizes
- In-house precision slitting 20–2000 mm width, burr ≤0.05 mm
- 45 000 t ready stock – real-time 310 Stainless Steel Coil portal
- Same-day shipment from Shanghai & Foshan – vessel booking to any port
- Multilingual technical team – instant mill support for welding, forming, and alloy selection
Proven Performance – 310 Coil Fabricated Components in Continuous 1100 °C+ Environments
Grade Comparison Table: 310/310S vs 309S vs 321 vs 304H vs 253MA vs 330
| Grade | Cr % | Ni % | Max Temp (°C) Continuous | Oxidation Resistance | Weld Post-Treat | Relative Cost | Best Use |
|---|---|---|---|---|---|---|---|
| 310/310S | 25 | 20 | 1150 | Excellent | Not needed | 1.4× | Furnace parts |
| 309S | 23 | 13 | 1050 | Very Good | Not needed | 1.2× | Oven liners |
| 321 | 18 | 10 | 870 | Good | Not needed | 1.0× | Exhaust |
| 304H | 18 | 8 | 800 | Moderate | Not needed | 0.9× | Refinery piping |
| 253MA | 21 | 11 | 1150 | Excellent | Not needed | 1.6× | Burner cones |
| 330 | 19 | 35 | 1050 | Very Good | Not needed | 1.5× | Carburising boxes |
FAQ – 310 Stainless Steel Coil
-
What is the maximum continuous service temperature?
1150 °C in air; intermittent up to 1100 °C with minimal scale growth. -
What is the difference between 310 and 310S?
310S is low-carbon (0.08 % max) for better weldability and thermal cycling; strength slightly lower. -
How does the coil price compare with 309S?
310 is ~15 % higher due to extra nickel; longer life often offsets premium. -
Which welding consumables should I use?
AWS E310-15 or ER310 bare wire; pre-heat not required, post-weld anneal optional. -
Do you stock hot-rolled and cold-rolled 310 stainless steel coil?
Yes, 0.4–50 mm thickness, 1000–2000 mm width, 45 000 t ready inventory. -
How fast can you deliver from China?
7 days production + 3–5 days ocean freight to Asian ports; 10 days to EU/US warehouses. -
What is the minimum order quantity?
One slit coil (≥500 kg) for stock items; master coils from 3 tons for mill direct. -
Can I download a mill test certificate?
Yes, EN 10204 3.1/3.2 MTC is auto-generated after RFQ and includes elevated-temperature creep curves.
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