耀日

钢号

C碳

Si硅

Mn锰            

P磷≤

S硫≤

碳当量CE         

最低使用温度/℃

1

SL2N255

≤0.17

≤0.30

≤0.70

0.025

0.025

2.10-2.50

﹣70

2

SL3N255

≤0.15

≤0.30

≤0.70

0.025

0.025

3.25-3.75

﹣101

3

SL3N275

≤0.17

≤0.30

≤0.70

0.025

0.025

3.25-3.75

﹣101

4

SL3N440

≤0.15

≤0.30

≤0.70

0.025

0.025

3.25-3.75

﹣110

5

SL5N590

≤0.13

≤0.30

≤1.50

0.025

0.025

4.75-6.00

﹣130

6

SL9N520

≤0.12

≤0.30

≤0.90

0.025

0.025

8.50-9.50

﹣196

7

SL9N590

≤0.12

≤0.30

≤0.90

0.025

0.025

8.50-9.50

﹣196