Hardness Range

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HARDNESS RANGE

GradeSymbol of Temper*Hardness HvGradeSymbol of Temper*Hardness Hv
301½H310 min.J-4½H310 min.
¾H370 min.¾H370 min.
H430 min.H430 min.
E H490 min.
304½H250 min.JSL USD/DD½H310 min.
¾H310 min.¾H370 min.
H370 min.H430 min.
316½H250 min.JSL AUS / J-1½H290 min.
¾H310 min.¾H340 min.
H370 min.H380 min.
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