Stainless Steel Grade 304L - Low Carbon Corrosion Resistant
Feb 26, 2026
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Chemical Composition of Stainless Steel 304
Table 1. Chemical composition for 304 stainless steel alloys
|
% |
304 |
304L |
304H |
|
C |
0.0 - 0.07 |
0.0 - 0.03 |
0.04 - 0.08 |
|
Mn |
0.0 - 2.0 |
0.0 - 2.00 |
0.0 - 2.0 |
|
Si |
0.0 - 1.00 |
0.0 - 1.00 |
0.0 - 1.0 |
|
P |
0.0 - 0.05 |
0.0 - 0.05 |
0.0 - 0.04 |
|
S |
0.0 - 0.03 |
0.0 - 0.02 |
0.0 - 0.02 |
|
Cr |
17.50 - 19.50 |
17.50 - 19.50 |
17.00 - 19.00 |
|
Ni |
8.00 - 10.50 |
8.00 - 10.50 |
8.00 - 11.00 |
|
Fe |
Balance |
Balance |
Balance |
|
N |
0.0-0.11 |
0.0-0.11 |
0.0 - 0.10 |
Properties of Stainless Steel 304
Mechanical Properties of Stainless Steel 304
Table 2a. Mechanical properties for 304 stainless steel alloys - sheet up to 8 mm thick
|
Grade |
304 |
304L |
304H |
|
Tensile Strength (MPa) |
540 - 750 |
520 - 700 |
- |
|
Proof Stress (MPa) |
230 Min |
220 Min |
- |
|
Elongation A50 mm |
45 Min % |
45 Min % |
- |
Table 2b. Mechanical properties for 304 stainless steel alloys - plate from 8 - 75 mm thick
|
Grade |
304 |
304L |
304H |
|
Tensile Strength (MPa) |
520 - 720 |
500 - 700 |
- |
|
Proof Stress (MPa) |
210 Min |
200 Min |
- |
|
Elongation A5 |
45 Min % |
45 Min % |
- |
Table 2c. Mechanical properties for 304 stainless steel alloys - bar and section up to 160 mm diameter / thickness
|
Grade |
304 |
304L |
304H |
|
Tensile Strength (MPa) |
500 - 700 |
500 - 700 |
500 - 700 |
|
Proof Stress (MPa) |
190 |
175 Min |
185 Min |
|
Elongation A50 mm |
45 Min % |
45 Min % |
40 Min % |
|
Hardness Brinell |
215 Max HB |
215 Max HB |
- |
Physical Properties of Stainless Steel 304
Table 3. Physical properties for 304 stainless steel alloys
|
Property |
Value |
|
Density |
8.00 g/cm3 |
|
Melting Point |
1450 °C |
|
Modulus of Elasticity |
193 GPa |
|
Electrical Resistivity |
0.72 x 10-6 Ω.m |
|
Thermal Conductivity |
16.2 W/m.K |
|
Thermal Expansion |
17.2 x 10-6/K |
Alloy Designations
Stainless steel 304 also corresponds to the following standard designations and specifications:
|
Euronorm |
UNS |
BS |
En |
Grade |
|
1.4301 |
S30400 |
304S15 304S16 304S31 |
58E |
304 |
|
1.4306 |
S30403 |
304S11 |
- |
304L |
|
1.4307 |
- |
304S11 |
- |
304L |
|
1.4311 |
- |
304S11 |
- |
304L |
|
1.4948 |
S30409 |
304S51 |
- |
304H |
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