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Grade 304 is the most versatile and widely used stainless steel, available in a wider range of forms, products and finishes than any other. In fact, austenitic stainless steel is approximately 70% of overall stainless steel production. Austenitic stainless steel square bar is not magnetic; Due to its high nickel and chromium composition, it is the most resistant to corrosion of all the stainless steel groups. In addition, austenitic stainless steel hexagon bar provides excellent mechanical properties. Heat treatment cannot be used to harden austenitic stainless steel hexagon bar, although it can be hardened considerably by cold working.
Chemical Composition ;
% |
304 |
304L |
304H |
C |
0-0.07 |
0-0.03 |
0.04-1 |
Mn |
0-2.0 |
0-2.0 |
0-2.0 |
Si |
0-1 |
0-1 |
0-1 |
P |
0-0.05 |
0-0.05 |
0-0.05 |
S |
0-0.02 |
0-0.02 |
0-0.02 |
Cr |
17.5-19.5 |
17.5-19.5 |
17.5-19.5 |
Ni |
8-10.5 |
8-10.5 |
8-10.5 |
Fe |
Balance |
Balance |
Balance |
Mechanical Properties ;
Grade |
304 |
304L |
304H |
Tensile Strength (MPa) |
520-720 |
500-6070 |
520-720 |
Compression Strength (MPa) |
210 |
- |
- |
Proof Stress 0.2% (MPa) |
210 |
200 |
210 |
Elongation A5 (%) |
45 Min |
45 Min |
40 Min |
Hardness Rockwell B |
92 |
- |
- |