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Temper Designation Codes for Copper and Copper Alloys

  The temper designations are classified by the process or processes used in manufacturing the product involved and its resulting qualities. It is not a specification of copper and copper alloy products.

Cold-Worked Tempers based on cold rolling or cold drawing, H

H00 1/8 hard
H01 1/4 hard
H02 1/2 hard
H03 3/4 hard
H04 Hard
H06 Extra hard
H08 Spring
H10 Extra Spring
H12 Special Spring
H13 Ultra Spring
H14 Super Spring

As-Manufactured Tempers, M

M01 As Sand Cast
M02 As Centrifugal Cast
M03 As Plaster Cast
M04 As Pressure Die Cast
M05 As Permanent Mold Cast
M06 As Investment Cast
M07 As Continuous Cast
M10 As Hot Forged - Air Cooled
M11 As forged - Quenched
M20 As Hot Rolled
M25 As Hot Rolled and Rerolled
M30 As Hot Extruded
M40 As Hot Pierced
M45 As Hot Pierced and Rerolled

Cold-Worked Tempers based on temper names applicable to particular products, H

H50 Exruded and Drawn
H52 Pierced and Drawn
H55 Light Drawn, Light Cold-Worked
H58 Drawn General Purpose
H60 Cold Heading, Forming
H63 Rivet
H64 Screw
H66 Bolt
H70 Bending
H80 Hard Drawn
H85 Medium Hard-Drawn Electrical Wire
H86 Hard-Drawn Electrical Wire
H90 As-finned

Cold-Worked and Stress Relieved, HR

HR01 1/4 Hard and Stress Relieved
HR02 1/2 Hard and Stress Relieved
HR04 Hard and Stress Relieved
HR06 Extra Hard and Stress Relieved
HR08 Spring and Stress Relieved
HR10 Extra Spring and Stress Relieved
HR12 Special Spring and Stress Relieved
HR20 As-finned

Drawn and Stress Relieved

HR50 Drawn and Stress Relieved