牌號
C
Mn
Si
Cr
Mo
Nb
HRC
ND100
3.0-5.0
0.50-2.50
0.50-2.50
25.0-??29.0?????
?0.50-1.00
55-62
ND100M
4.0-5.5
0.50-2.50
0.50-2.50
27.0-33.0
0.80-1.20
60-63
ND350
3.0-5.0
0.50-2.50
0.50-2.50
22.0-28.0
0.30-1.00
3.0-4.5
55-62
ND350Z
3.0-5.0
0.50-2.50
0.50-2.50
22.0-28.0
0.30-1.00
3.0-4.5
57-63
ND350X
4.0-5.5
0.50-2.50
0.50-2.50
24.0-30.0
0.30-1.00
3.0-4.5
58-63
ND650
3.0-5.0
0.50-2.50
0.50-2.50
20.0-26.0
0.30-1.00
6.0-7.5
55-63
ND650Z
3.0-5.0
0.50-2.50
0.50-2.50
20.0-26.0
0.30-1.00
6.0-7.5
57-63
ND650X
4.5-5.8
0.50-2.50
0.50-2.50
25.0-31.0
0.30-1.00
6.0-7.5
58-63
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