Stainless steel 310S is austenitic chromium, nickel stainless steel (.08% max carbon) with good oxidation resistance and strength at high temperatures. It resist oxidation in continuous service up to 2000ºF gave decreasing sulphur gasses are not present. It is additionally utilized for intermittent service at temperatures up to 1900°F due to it resists rescaling and has a low coefficient of expansion. This factor reduces the tendency of the steel to warp in heat service. 310s are same as 310 aside from lower carbon content to minimize carbide precipitation during welding.
CharacteristicsType 310/310S is promptly fabricated by a standard commercial process. In comparison to carbon steel, stainless steels are tougher and tend to work harden quickly. By using all of the common welding processes type 310/310S can be easily welded.
MachiningThis alloy machines same as type 304 stainless steel. The chips of this alloy are stringy and it will work harden very quickly. It is compulsory to keep the tool cutting at all times and utilize chip breakers.
WeldingBy using fusion or resistance technique most of the austenitic stainless steels can be quickly welded. Oxyacetylene welding is not recommended. Filler metal should be AWS E/ER 310.
Hot WorkingAfter uniform heating to 2150 F (1177 C) most common hot work techniques can be successfully performed. Do not forge down 1800 F (982 C). Fast cooling is required to maximize corrosion resistance.
Cold WorkingIn spite of the fact that this alloy has a high work hardening rate, this alloy can be drawn, headed, upset and stamped. To remove internal stress full annealing is required after cold work.
Annealing1900-2050 F (1038-1121 C) water quench.
HardeningThis alloy doesn’t reply to heat treatment. Cold work will cause an increase in both hardness and strength.
Chemical Composition %Grade | C | Si | P | S | Cr | Mn | Ni | Fe |
310 | 0.025 max | 1.50 max | 0.045 max | 0.03 max | 24.0 - 26.0 | 2.0 max | 19.0-22.0 | Remainder |
310S | 0.08 max | 1.50 max | 0.045 max | 0.03 max | 24.0 - 26.0 | 2.0 max | 19.0-22.0 | Remainder |
Tensile Strength (ksi) | 0.2% Yield Strength (ksi) | Elongation% in 2 inches |
75 | 30 | 40 |
310 | 310S | Temperature in °C | |
Density | 8.0 g/cm³ | 9.01 g/cm³ | Room |
Specific Heat | 0.12 Kcal/kg.C | 0.12 Kcal/kg.C | 22° |
Melting Range | 1400 - 1455 °C | 1399 - 1454 °C | - |
Modulus of Elasticity | 193 - 200 KN/mm² | 200 KN/mm² | 22° |
Electrical Resistivity | 77 µΩ.cm | 94 µΩ.cm | Room |
Coefficient of Expansion | 15.8 µm/m °C | 14.4 µm/m °C | 20 - 100° |
Thermal Conductivity | 16.2 W/m -°K | 13.8 W/m -°K | 20° |
Pipe / Tube (SMLS) | Sheet / Plate | Bar | Forging | Fitting |
A 213, A 249 | A 167, A 240 | A 276 | A 182 | A 403 |
Manufacturing |
Refractory Anchors |
Fasteners |
Custom Machining |
Custom Fabrication |
Piping / Spools |
Stamped Parts |
B/W Fittings |
S/W Fittings |
Flanges |
Compression Fittings |
Raw Materials |
Pipes |
Tubes |
Bars |
Sheets |
Plates |