• Language
  • Phone IconCall Us:+91 22 66109393
  • Email Id : sales@ngi.net.in

309S/309H Stainless Steel Plates

Alloys 309 and 309S are austenitic chromium-nickel stainless steels that are often used for higher temperature applications. Due to their high chromium and nickel content, Alloys 309 and 309S are highly corrosion resistant, have outstanding resistance to oxidation, and excellent heat resistance while providing good strength at room and elevated temperatures. The only significant difference between 309 and 309S is the carbon content. Alloy 309S has a much less carbon composition which minimizes carbide precipitation and improves weldability.

Alloys 309 and 309S are used exclusively for their high temperature oxidation resistance, excellent high temperature strength, along with their resistance to creep deformation and environmental attack.

Specifications :

Standard : ASTM A240 / ASME SA240
Thickness of Coils : Ranging from 0.3mm to 10mm
Thickness of Sheets (Cold Rolled) : Ranging from 0.3 mm to 6 mm
Thickness of Sheets / Plates (Hot Rolled) : Ranging from 3.0 mm to 20 mm
Width : 1000mm / 1219mm /1250mm / 1500mm / 2000mm
Length : 2000 mm / 2440 mm / 2500 mm / 3000 mm / 6000 mm
Hardness : As per ASME A & NACE MR 175
Finish : Hot rolled plate (HR), Cold rolled sheet (CR), 2B, 2D, BA NO(8), SATIN (Met with Plastic Coated)
Form : Coils, Foils, Rolls, Plain Sheet, Shim Sheet, Perforated Sheet, Chequered Plate, Strip, Flats, Blank (Circle), Ring (Flange) etc.

309S/309H Stainless Steel Plates Chemical Properties

C Mn Si P S Cr Ni Fe
309 max: 0.20 2.0 max 0.75 max 0.045 max 0.03 max min: 22.0 max: 24.0 min: 12.0 max: 15.0 Balance
309H min: 0.04 max: 0.10 2.0 max 0.75 max 0.045 max 0.03 max min: 22.0 max: 24.0 min: 12.0 max: 15.0 Balance

309S/309H Stainless Steel Plates Mechanical Properties

ss
Grade Tensile Strength ksi (min) Yield Strength 0.2% ksi (min) Elongation % Hardness (Brinell) MAX
309/H 40 30 40 217

309S/309H Stainless Steel Plates Physical Properties

Density
lbm/in3
Thermal Conductivity
(BTU/h ft. °F)
Electrical
Resistivity
(in x 10-6)
Modulus of
Elasticity
(psi x 106
Coefficient of
Thermal Expansion
(in/in)/
°F x 10-6
Specific Heat
(BTU/lb/
°F)
Melting
Range
(°F)
at 68°F: 0.285 9.0 at 32- 212°F 30.7 at 68°F 28.5 8.28 at 32 – 212°F 0.1200 at 68°F to 212°F 2500-2590
Our Products