Steel No.

process

Chemical composition, Wt%

C

Si

Cr

Mo

Co

V

W

Nb

HSS-Nb IF

IF

1.22

0.452

4.02

4.52

5.04

2.03

6.13

0.71

HSS-Nb 1

ESR1

1.07

0.323

3.73

4.19

4.98

1.83

6.08

0.677

HSS-Nb 2

ESR2

0.98

0.252

3.78

4.24

5.04

1.85

6.03

0.639

HSS-Nb 3

ESR3

1.12

0.452

3.83

4.28

5.15

1.9

6.04

0.685