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Carbon tool steel Equivalent Grade

China
GB,YB
Japan
JIS
Germany
DIN(W-Nr.)
USA
ASTM
UK
BS
French
NF
GOST
ГОСТ
T7 SK7,SK6   W1-7   1204Y275,
1304Y375
Y7
T8 SK6,SK5   W1-71/2     Y8
T8Mn SK5         Y8Г
T9 SK4,SK5   W2-81/2,
W1-81/2
WB1A   Y9
T10 SK3,SK4   W2-91/2,
W1-91/2
BW1B 1203Y290,
1303Y390
Y10
T11 SK3   W1-101/2   1202Y2105 Y11
T12 SK2   W1-111/2 BW1C 1201Y2120 Y12
T13 SK1   W2-13,
W1-121/2
  1200Y2135 Y13
T7A         1105Y165 Y7A
T8A   C80W1(1.1525)
(VDEh)
    1104Y175 Y8A
T8MnA   C85WS(1.1830)
(VDEh)
      Y8ГA
T9A         1103Y190 9YA
T10A   C105W1(1.1545)
(VDEh)
      Y10A
T11A         1102Y1105 Y11A
T12A         1101Y1120 Y12A
T13A           Y13A

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