tin, lead and small percentage of antimony

tin and lead

tin, lead and silver

tin and copper

50:50:00

30 : 70

70:30:00

40 : 60

chromium and nickel

nickel and molybdenum

aluminium and zinc

tungsten and sulfur

steel

Al₂0₃

Si02

MgO

50 : 20 : 20 : 10

40 : 30 : 20 : 10

50 : 20 : 10 : 20

30 : 20 : 30 : 20