Hardened and tempred- core hardness 270-390HV0,3 / Surface harness 450-600 HV0,3 / Case depth (cd):0,10-023mm) |
Baking to prevent hydrogen embrittlement : Acc to ISO4042:1999 (200-200oC min 8h or 220-250o min.4h Bending-angle before break 20o / Min.torque limit to yield point:3,0 NM |
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