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Spring steel Equivalent Grade

China
GB,YB
Japan
JIS
Germany
DIN(W-Nr.)
USA UK
BS
French
NF
Gost
ГОСТ
ASTM AISI SAE
65   C67(1.0761)
CK67(1.1231)
1064,
1065
1064,
1065
1064,
1065
080A67 XC65 65
70   C67(1.0761)
CK67(1.1231)
1070 1070 1070 070A72 XC70 70
75   C75(1.0773) 1074 1074 1074 070A78 XC70,
XC80
75
85 SUP3   1084 1084 1084 080A86   85
65Mn     1566   1566
(1066)
    65Г
55Si2Mn SUP6 55Si7(1.0904) 9255 9255 9255 250A53 55S6,
56S7
55C2
60Si2Mn SUP7 65Si7(1.0906),
66Si7(1.5028),
60SiCr7(1.0961)
9260 9260 9260 250A58,
250A61
61S7 60C2
60Si2CrA   67SiCr5(1.7103) 9254   9254     60C2XA
50CrMn SUP9 55Cr3(1.7176)       527A60   50XГ
50CrVA SUP10 50CrV4(1.8159) 6150 6150 6150 735A50 50CV4 50XΦA

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