ASTM A312 TP304L

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ASTM A312 TP304L

Chemical Requirements:  Composition, %, max

Grade TP304L(S30403)
Carbon 0.035 a
Manganese 2.00
Phosphorus 0.045
Sulfur 0.030
Silicon 1.00
Chromium 18.0-20.0
Nickel 8.0-13.0

a For small diameter or thin walls or both, where many drawing passes are required, a carbon maximum of 0.040 % is necessary in grades TP304L and TP316L. Small outside diameter tubes are defined as those less than 0.500 in. [12.7 mm] in outside diameter and light wall tubes as those less than 0.049 in. [1.20 mm] in average wall thickness (0.044 in. [1.10 mm] in minimum wall thickness).

 

Heat Treating Temperature: 1900 °F [1040 °C]

Tensile Requirements:

Tensile Strength, min ksi [MPa] 70 [485]
Yield Strength, min ksi [MPa] 25 [170]

Elongation in 2 in. or 50 mm (or 4D), min, %:

Longitudinal 35
Transverse 25