Introduction

310S heat resistant stainless steel plate (also known as 310S high temperature stainless steel plate or 310S austenitic stainless steel plate) is a chromium nickel stainless steel plate (25% Cr, 20% Ni) designed for continuous service up to 1150°C. 

As a 310S oxidation resistant stainless steel, it exhibits exceptional high temperature resistance and oxidation resistance in cyclic and elevated temperature environments. Manufactured to international standards including ASTM A240 Type 310S stainless steel plate, UNS S31008 stainless steel plate, EN 1.4845 stainless steel plate, and JIS SUS310S stainless steel plate, this heat resistant material is the preferred choice for high temperature furnace components, heat treatment equipment, boilers, kilns, petrochemical industry furnaces, and various high temperature equipment where 304/316 grades fail due to scaling or creep. 

Whether for radiant tubes, retorts, or thermal processing systems, 310S stainless steel plate delivers reliable performance as a proven 310S stainless steel plate for thermal applications.

Chemical components(%)

Mechanical properties

Physical properties

310S Stainless Steel Plate Available Products and Standard

1. ASTM A240 / ASME SA240 

(Standard Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications)

Grade: Type 310S / UNS S31008 – 310S austenitic stainless steel plate, 310S chromium nickel stainless steel plate (25% Cr, 20% Ni)

Type: 

• 310S stainless steel Plate

• 310S stainless steel Sheet

• 310S stainless steel Strip

Size Range:

• Hot-rolled plate: 1.5 – 150 mm thick

• Cold-rolled sheet: 0.5 – 6 mm thick (±0.02 mm tolerance)

• Width: 1000 – 3500 mm (customised)

• Length: 2000 – 12000 mm (customised)

Surface: Annealed & Pickled（No.1, AP）, Bright Annealed（BA, 2B）, Shot Blasted（SA 2.5）, No.4, Hairline, Mirror（8K）

Testing: Chemical analysis, tensile test（Rm ≥515 MPa, Rp0.2 ≥205 MPa）, elongation test（≥40%）, hardness test（Brinell ≤201, HRB ≤92）, flattening test（for strip）, hydrostatic test, intergranular corrosion test, dimensional inspection

2. EN 10088-2 

(Stainless Steels – Technical Delivery Conditions for Sheet/Plate and Strip of Corrosion Resisting Steels for General Purposes)

Grade: X8CrNi25-21 / 1.4845 – EN 1.4845 stainless steel plate
Type: 

• SS 310S Hot-rolled plate

• SS 310S Cold-rolled sheet

• SS 310S Strip

Size Range:

• Thickness: 0.3 – 100 mm

• Width: up to 3500 mm

• Common Sizes: 1220×2440 mm, 1500×3000 mm, 2000×6000 mm

Surface: Annealed, Pickled, Bright, 1D, 2B, 2D, BA

Testing: Chemical analysis, tensile test, elongation test, flattening test（for strip）, eddy current test（optional）, dimensional inspection

3. JIS G4304 / G4305 

(Hot-Rolled / Cold-Rolled Stainless Steel Plate, Sheet and Strip)

Grade: SUS310S – JIS SUS310S stainless steel plate, 310S heat resistant stainless steel plate with high temperature resistance up to 1150℃

Type: 

• 310S stainless steel Hot-rolled plate（G4304）

• 310S stainless steel Cold-rolled sheet and strip（G4305）

Size Range:

• Thickness: 0.3 – 200 mm

• Width: 1000 / 1219 / 1500 / 1800 / 2000 / 2500 / 3000 / 3500 mm

• Common Sizes: 1219×2438 mm（4′×8′）, 1500×6000 mm

Surface: No.1, 2B, BA, No.4, HL, 8K Mirror

Testing: Chemical composition verification（C ≤0.08%, Cr 24.0-26.0%, Ni 19.0-22.0%）, tensile test（Rm ≥520 MPa, Rp0.2 ≥205 MPa）, elongation（≥40%）, flattening test, intergranular corrosion test, dimensional inspection

4. GB/T 4237 

(Hot-Rolled Stainless Steel Sheets and Strips)

Grade: 06Cr25Ni20（310S）– 310S high temperature stainless steel plate（low carbon ≤0.08% to minimize carbide precipitation during welding）

Type: 

• 310S Hot-rolled plate

• 310S Strip

Size Range:

• Thickness: 2.0 – 500 mm

• Width: up to 4200 mm

• Length: up to 18000 mm

Surface: No.1（Annealed & Pickled）, 2D

Testing: Chemical analysis, tensile test（Rm ≥520 MPa, Rp0.2 ≥205 MPa）, elongation test（≥40%）, flattening test, intergranular corrosion test, dimensional inspection

Applications

(1)Industrial furnaces and heat treatment equipment – ASTM A240 310S heat resistant stainless steel plate (high chromium 24-26% and nickel 19-22%) withstands continuous service up to 1100°C, used for furnace linings, radiant tubes, and conveyor belts with excellent oxidation resistance.

(2)Petrochemical and refinery fired heaters – 310S high temperature stainless steel plate resists thermal cycling and sulfidation, specified for tube supports, baffles, and heat shields in cracking furnaces and reformer units.

(3)Thermal processing of ceramics and glass – 310S austenitic stainless steel plate provides dimensional stability and creep resistance in kiln cars, glass lehr rollers, and annealing covers, handling repeated heating and cooling.

(4)Gas turbine and exhaust systems – 310S high chromium stainless steel plate offers hot strength and resistance to combustion gases, used for transition ducts, combustor liners, and afterburner housings.

(5)Cement and lime production kilns – 310S stainless steel heat resistant plate resists abrasion and high-temperature sulfidation in cooler grates, riser ducts, and kiln hoods, extending service life in severe thermal environments.

(6)Welding equipment and critical clamps – 310S oxidation resistant stainless steel plate maintains mechanical properties at elevated temperatures, chosen for welding jigs, annealing covers, and heat treatment fixtures where repeated thermal exposure is required.

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