50 : 20 : 20 : 10

40 : 30 : 20 : 10

50 : 20 : 10 : 20

30 : 20 : 30 : 20

acidic

basic

neutral

brittle

70% copper and 30% zinc

90% copper and 10% tin

85-92% copper and rest tin with little lead and nickel

70-75% copper and rest tin

gun metal

bronze

bell metal

babbit metal

grey cast iron, low carbon steel, wrought iron

low carbon steel, grey cast iron, wrought iron

wrought iron,low carbon steel, grey cast iron

wrought iron, grey cast iron, low carbon steel