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?D??2?
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? 3
+12 % ,-10 %
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? 0.8%

????1???3Y

??o?
???3Y
C
Si
Mn
P
S
Cr
Mo
Ni
Nb+Ti
10
0.17-0.14
0.17-0.37
0.35-0.65
?0.035
?0.035
?0.15
/
?0.25
/
20
0.17-0.24
0.17-0.37
0.35-0.65
?0.035
?0.035
?0.25
/
?0.25
/
12CrMo
0.08-0.15
0.17-0.37
0.40-0.70
?0.035
?0.035
0.40-0.70
0.40-0.55
?0.30
/
15CrMo
0.12-0.18
0.17-0.37
0.40-0.70
?0.035
?0.035
0.80-1.10
0.40-0.55
?0.30
/
1Cr2Mo
? 0.15
0.50-1.00
0.30-0.60
?0.035
?0.030
2.15-2.85
0.45-0.65
/
/
1Cr19Ni9
0.04-0.10
? 1.00
? 2.00
?0.035
?0.030
18.00-20.00
/
8.00-11.00
/
1Cr19Ni11Nb
0.04-0.10
? 1.00
? 2.00
?0.035
?0.030
17.00-20.00
/
9.00-13.00
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