ASTM A240 304L (S30403) Stainless Steel General Properties

Posted:2016-11-30 03:20:08

Alloys 304L is the most versatile and widely used alloy in the stainless steel family.304L has good welding characteristics and can be welded by all standard methods but attention needs to be paid to avoid weld hot cracking.

Chemistry Typical of ASTM A240 304L (S30403)

Carbon: 0.03 max
Chromium: 18.00 – 20.00
Manganese: 2.0 max
Nickel: 8.00 – 12.00
Phosphorus: 0.045 max
Silicon: 1.0 max
Sulphur : 0.03 max
Iron: Balance

Mechanical Properties of 304L (S30403) stainless steel

Temper	304		304L
Tensile Rm	76	ksi (min)	70	ksi (min)
Tensile Rm	517	MPa (min)	485	MPa (min)
R.p. 0.2% Yield	31	ksi (min)	25	ksi (min)
R.p. 0.2% Yield	207	MPa (min)	170	MPa (min)
Elongation (2" or 4D gl)	40	% (min)	40	% (min)

ASTM A240 304L Physical Properties (Room Temperature)

Specific Heat (0-100°C)	500	J.kg-1.°K-1
Thermal Conductivity	16.2	W.m -1.°K-1
Thermal Expansion	17.2	mm/m/°C
Modulus Elasticity	19.3	GPa
Electrical Resistivity	7.23	μohm/cm
Density	8.0	g/cm3

Alloy 304L Stainless Steel is used in a wide variety of home and commercial applications, including：

1，Food processing equipment, particularly in beer brewing, milk processing, and wine making
2，Kitchen benches, sinks, troughs, equipment, and appliances
3，Architectural trim and molding

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