304 / 304L Stainless Steel Bar Stock

304 and 304/L (UNS S30400 & UNS S30403) are austenitic alloys of stainless steel bars. These alloys are the most familiar and most frequently used alloys in the stainless steel family.  The L in 304/L refers to a lower carbon content to allow for greater corrosion protection when welding.

Austenitic steels have austenite as their primary phase (face centered cubic crystal). These are alloys containing chromium and nickel (sometimes manganese and nitrogen), structured around the Type 302 composition of iron, 18% chromium, and 8% nickel. Austenitic steels are not hardenable by heat treatment. The most familiar stainless steel is probably Type 304, sometimes called T304 or simply 304. Type 304 surgical stainless steel is austenitic steel containing 18-20% chromium and 8-10% nickel.

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SKU Description DFARS Manufacture Method Diameter Shape Specification
Sku: 07751 Description: 304/304L CDA S/S ROD .125 DIA DFARS: Yes Manufacture Method: Air Melt Diameter: 0.1250 Shape: STEEL ROD/BAR ROUND Specification: AMS5639 ASTM A276
Sku: 75924 Description: 304 S/S FLT GAUER BAR .1250 X .6250 DFARS: Yes Manufacture Method: GAUER Diameter: 0.1250 Shape: STEEL BAR RECTANGULAR Specification: A240 CHEMISTRY ASTM A276
Sku: 07323 Description: 304 S/S GAUER BAR .1250 X 2.0000 DFARS: Yes Manufacture Method: GAUER Diameter: 0.1250 Shape: STEEL BAR RECTANGULAR Specification: A240 CHEMISTRY ASTM A276
Sku: 07332 Description: 304 S/S GAUER BAR .1250 X 2.500 DFARS: No Manufacture Method: GAUER Diameter: 0.1250 Shape: STEEL BAR RECTANGULAR Specification: A240 CHEMISTRY ASTM A276
Sku: 07336 Description: 304 S/S GAUER BAR .1250 X 3.000 DFARS: No Manufacture Method: GAUER Diameter: 0.1250 Shape: STEEL BAR RECTANGULAR Specification: A240 CHEMISTRY ASTM A276
Sku: 07361 Description: 304 S/S GAUER BAR .1250 X .5000 DFARS: Yes Manufacture Method: GAUER Diameter: 0.1250 Shape: STEEL BAR RECTANGULAR Specification: A240 CHEMISTRY ASTM A276
Sku: 07368 Description: 304 S/S GAUER BAR .125 X .750 DFARS: Yes Manufacture Method: GAUER Diameter: 0.1250 Shape: STEEL BAR RECTANGULAR Specification: A240 CHEMISTRY ASTM A276
Sku: 07371 Description: 304 S/S GAUER BAR .1250 X 1.0000 DFARS: Yes Manufacture Method: GAUER Diameter: 0.1250 Shape: STEEL BAR RECTANGULAR Specification: A240 CHEMISTRY ASTM A276
Sku: 07381 Description: 304 S/S GAUER BAR .1250 X 1.250 DFARS: Yes Manufacture Method: GAUER Diameter: 0.1250 Shape: STEEL BAR RECTANGULAR Specification: AMS5513 ASTM A240
Sku: 07383 Description: 304 S/S GAUER BAR .1250 X 1.5000 DFARS: Yes Manufacture Method: GAUER Diameter: 0.1250 Shape: STEEL BAR RECTANGULAR Specification: A240 CHEMISTRY ASTM A276

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Available shapes: Hexes, Rounds, Square

Specifications: ASTM A276, ASTM A479, ASME SA479 & AMS 5639.

Typical Chemical Properties
304304/L
Minimum Properties
Tensile Strength , psi 75,000 70,000
Yield Strength, psi 30,000 25,000
Elongation 40% 40
Hardness Rb 92 max Rb 92 max
Chemistry
Carbon( C) .08 max 0.03 max
Chrome (Cr) 18.0-20.0 18.0-20.0
Manganese (Mn) 2.00 max 2.00 max
Nickel ( Ni) 8.0 - 10.50 8.0 - 12.00
Phosphorus (P) .045 max .045 max
Sulphur (S) .030 max .030 max
Silicon (Si) 0.75 max 0.75 max

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