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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Thickness
Specification
Manufacture Method
Shape
Grade
Width
Diameter

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SKU Description Manufacture Method Diameter Shape Specification
Sku: 75930 Description: 304 S/S GAUER BAR .3125 X 2.0000 Manufacture Method: GAUER Diameter: 0.3125 Shape: STEEL BAR RECTANGULAR Specification: A240 CHEMISTRY ASTM A276 16
Sku: 07769 Description: 304/304L CDA S/S ROD .3125 DIA Manufacture Method: Air Melt Diameter: 0.3125 Shape: STEEL ROD/BAR ROUND Specification: AMS5639 ASTM A276 16
Sku: 07776 Description: 304/L CDA S/S ROD .4375 DIA Manufacture Method: Air Melt Diameter: 0.4375 Shape: STEEL ROD/BAR ROUND Specification: AMS5639 ASTM A276 16
Sku: 51767 Description: 304/L S/S BAR 7/16 HEX Manufacture Method: HOT ROLLED ANNEALED & PICKLED Diameter: 0.4375 Shape: STEEL ROD/BAR HEX Specification: AMS5639 ASTM A276 16
Sku: 07868 Description: 304/304L S/S ROD .8125 DIA Manufacture Method: Air Melt Diameter: 0.8125 Shape: STEEL ROD/BAR ROUND Specification: AMS5639 ASTM A276 16
Sku: 51754 Description: 304/304L CDA/CF S/S ROD .5625 DIA Manufacture Method: Air Melt Diameter: 0.5625 Shape: STEEL ROD/BAR ROUND Specification: AMS5639 ASTM A276 16
Sku: 53203 Description: 304/304L ROD .5625 HEX Manufacture Method: HOT ROLLED ANNEALED & PICKLED Diameter: 0.5625 Shape: STEEL ROD/BAR HEX Specification: AMS5639 ASTM A276 16
Sku: 07738 Description: 304/304L CF S/S ROD 1.1875 DIA Manufacture Method: Air Melt Diameter: 1.1875 Shape: STEEL ROD/BAR ROUND Specification: AMS5639 ASTM A276 16
Sku: 89315 Description: 304 S/S GAUER BAR .1875 X .7500 Manufacture Method: GAUER Diameter: 0.1875 Shape: STEEL BAR RECTANGULAR Specification: A240 CHEMISTRY ASTM A276 16
Sku: 07395 Description: 304 S/S GAUER BAR .1875 X 1.000 Manufacture Method: GAUER Diameter: 0.1875 Shape: STEEL BAR RECTANGULAR Specification: A240 CHEMISTRY ASTM A276 16

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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