Temper, Hardness, Finish Conversion Chart

Temper, Hardness, Finish Conversion Chart

Temper Conversion

AMFCE


EN10202


Old EN


ASTM


Annealing


Reduction


TS230


TS230


T50


T1


BA


SR


TS245


TS245


T52


T2


BA


SR


TS260


TS260


T55


 


BA


SR


TS275


TS275


T57


T3


BA


SR


TS290


TS290


T59


T4


BA


SR


TS340


 


 


 


BA


SR


TS480


 


 


 


BA


DR


TS500


 


 


 


BA


DR


TS520


 


DR520


DR7.5


BA


DR


TS550


 


DR550


DR8


BA


DR


TH330


 


 


 


CA


SR


TH360


 


 


 


CA


SR


TH415


TH415


T61


T4


CA


SR


TH435


TH435


T65


T5


CA


SR


TH460


 

 


 


CA


DR


TH480


 

 


 


CA


DR


TH520


TH520


DR520


DR7.5


CA


DR


TH550


TH550


DR550


DR8


CA


DR


TH580


TH580


DR580


DR8.5


CA


DR


TH620


TH620


DR620


DR9


CA


DR



HARDNESS COMPARISON


(Based on ASTM A623)


Designation


T-1


T-2


T-3


T-4


T-5


DR-8


DR-9


Aim Rockwell Range (30-T Scale)



46-52



50-56



54-60



58-64



62-68



73



76


FINISH


(Based on ASTM STANDARDS)


7B


BRIGHT


7C


STONE


5C


SILVER


5C /5D


MATTE


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