<0.8%

<1.3%

>2%

>6.3%

Improve machinability

Improve ductility

Release internal stresses

Reduce hardness and brittleness

70% copper and 30% zinc

70% copper and 30%tin

30% copper and 70%tim

60% copper and 40% tin

medium-carbon steel

high-carbon steel

alloy steel

stainless steel

Quartz

Talc

Topaz

Diamond