310S Stainless Steel Plate-Sheet

1. What is 310S Stainless Steel?

310S (UNS S31008) is a low-carbon version of the 310 austenitic stainless steel . It is a high-temperature resistant alloy known for its excellent oxidation resistance and creep strength. The "S" stands for "low carbon," which significantly improves its performance during welding and high-temperature service.

This grade advantages: It combines the heat-resistant properties of a high-alloy steel withworkability and weldabilityensured by its low-carbon chemistry (310S). It is the material of choice when projects demand reliability in cyclic high-temperature environments

2. Key Differences: 310 vs. 310S
While both grades are designed for high-temperature applications, the main difference lies in their carbon content:

Grade 310: Contains a higher carbon content (0.25% max), which provides higher strength at elevated temperatures but can lead to sensitization and embrittlement in certain environments.

Grade 310S: Has a lower carbon content (0.08% max). This reduces the risk of carbide precipitation at grain boundaries, offeringbetter resistance to sensitizationand maintaining ductility even after prolonged exposure to high heat.

3. Chemical Composition (Typical %)
The high Chromium and Nickel content gives this steel its "superior" status compared to standard grades like 304.

Chromium (Cr):24.0 - 26.0

Nickel (Ni):19.0 - 22.0

Carbon (C):0.08 max

Manganese (Mn):2.00 max

Silicon (Si):1.50 max

Iron (Fe):Balance

4. Physical & Mechanical Properties

Density:8.0 g/cm³

Melting Point:to 1400 - 1455°C

Tensile Strength (min):515 - 520 MPa

Yield Strength (0.2% offset, min):205 MPa

Elongation (min):40%

Hardness (max):95 HRB

Applications
310S is primarily sold into industries requiring resistance to extreme heat.

Industrial Furnace Components:Kilns, muffles, retorts, radiant tubes, and conveyor belts.

Heat Treatment Equipment:Annealing covers, thermowells, and refractory anchor bolts.

Petrochemical Processing:Tube hangers, burner parts, and combustion chambers0.

Power Generation:Boiler baffles, fire box sheets, and coal gasifier components.

Waste Treatment:Incinerators and thermal oxidizers

It typically supply 310S in:

Coils/Strips(ASTM A240)

Sheets/Plates(ASTM A240)

Seamless/Welded Pipes & Tubes(ASTM A213/A312)

Bars & Wire(ASTM A276/A479)

Specification details