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Raw material properties have a major effect on the stamping process and die design and are expressed as a percentage of the clearence and calculation force press machine.

Properties of Raw Materials

Material Shear Strength (kgf/mm2) Tensile Strength (kgf/mm2)
Soft Hard Soft Hard
Lead 2~3 2.5~4
Tin 3~4 4~5
Aluminum 7~11 13~18 8~12 17~22
Zinc 12 20 15 25
Copper 12 20 15 25
Brass 22~30 35~40 28~35 40~60
Bronze 32~40 40~60 40~50 50~75
German Silver 28~36 45~56 35~45 55~70
Steel 0.1%C 25 32 32 40
Steel 0.2%C 32 40 40 50
Steel 0.3%C 36 48 45 60
Steel 0.4%C 45 56 56 72
Steel 0.6%C 56 72 72 90
Steel 0.8%C 72 90 90 100
Steel 1.0%C 80 105 100 130
Stainless Steel 52 56 65~70
Nickel 25 44~50 57~63

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