SS 304 / 304L

Stainless Steel Grade 304 is the most commonly used stainless steel. It is an austenitic, corrosion resistant steel with excellent strength, toughness, fabrication characteristics and weldability.SS 304L is the low carbon version of SS 304 may be required for full corrosion resistance when thicker sections are welded. The SS 304H version has a guaranteed minimum carbon content, which ensures good strength at high temperatures. SS 304LN is a nitrogen-strengthen version of SS 304.

Chemical Composition

SS 304 304H 304N 304L 304LN
Ni 8 – 11 8 – 11 8 – 11 8 – 13 8 – 11
Fe Balance
Cr 18 – 20 18 – 20 18 – 20 18 – 20 18 – 20
C 0.08 max 0.04 – 0.10 0.08 max 0.035 max 0.035 max
Si 0.75 max 0.75 max 0.75 max 0.75 max 0.75 max
Mn 2 max 2 max 2 max 2 max 2 max
P 0.040 max 0.040 max 0.040 max 0.040 max 0.040 max
S 0.030 max 0.030 max 0.030 max 0.030 max 0.030 max
N 0.10 – 0.16 0.10 – 0.16

Specifications

Stainless Steel [SS] 304 / H / L / N / LN
AISI 304 / 304H / 304L / 304N / 304LN
UNS S30400 / S30409 / S30403 / S30451 / S30453
Werkstoff Nr. 1.4301 / 1.4306 / 1.4948 / 1.4311

Mechanical & Physical Properties

Density 8.0 g/cm3
Melting Point 1400 °C (2550 °F)
Tensile Strength Psi – 75000 , MPa – 515
Yield Strength (0.2%Offset) Psi – 30000 , MPa – 205
Elongation 35 %

Applications

SS 304 / L / H / LN Chemical Industry

Chemical Industry

SS 304 / L / H / LN Nuclear Industry

Nuclear Industry

SS 304 / H / L / N / LN Food Industry

Food Industry

SS 304 / H / L / N / LN Petroleum Industry

Petroleum Industry

SS 304 / H / L / N / LN Fabrication Industry

Fabrication Industry

SS 304 / H / L / N / LN Heat Exchangers

Heat Exchangers