The difference between SUS303 and SUS304
The difference between SUS303 and SUS304
The difference between SUS303 stainless steel and SUS304 stainless steel
SUS303 and SUS304, JIS (Japanese Industrial Sandard) steel representation method, in the Japanese steel standard SUS on behalf of stainless steel, 303,304 is the number, and we are talking about the 304 stainless steel, in fact, ASTM (American Steel Standard) Code.
Corresponding relationship is as follows:
GB / T 1220__Y1Cr18Ni9, JIS G4303__SUS 303, ASTM__303 (Y in the national standard for easy cutting) GB / T 1220__0Cr18Ni9, JIS G4303__SUS 304, ASTM__304
SUS303 (1Cr18Ni9) and SUS304 (0Cr18Ni9) are austenitic stainless steel (can not be strengthened by heat treatment, can not be the same as carbon steel quenching, no magnetic), that is, there is no magnetic. Their main difference is the difference between carbon content, SUS303 carbon content ≤ 0.15, and SUS304 carbon content ≤ 0.08, that is, SUS303 after cold processing strength is relatively high, SUS304 is the most widely used as a heat-resistant stainless steel, food Equipment, general chemical equipment, atomic energy industrial equipment. SUS304: P≤0.045, S≤0.030, S≥30. SUS304: P≤0.045, S≤0.030
