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Hardness Range
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Hardness Range
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Products Range
Material Specification
Grade & its Properties
Edge Condition
Tolerance Range
Hardness Range
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Hardness Range
HARDNESS RANGE
Grade
Symbol of Temper*
Hardness Hv
Grade
Symbol of Temper*
Hardness Hv
301
½H
310 min.
J-4
½H
310 min.
¾H
370 min.
¾H
370 min.
H
430 min.
H
430 min.
E H
490 min.
304
½H
250 min.
JSL USD/DD
½H
310 min.
¾H
310 min.
¾H
370 min.
H
370 min.
H
430 min.
316
½H
250 min.
JSL AUS / J-1
½H
290 min.
¾H
310 min.
¾H
340 min.
H
370 min.
H
380 min.
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