All grades of Gun Metal Ingots
Designation	LG 1		LG 2		LG 4		G 1		G 3
Material	Leaded Gunmetal		Leaded Gunmetal		Leaded Gunmetal		Leaded Gunmetal		Leaded Gunmetal
Elements	Min	Max	Min	Max	Min	Max	Min	Max	Min	Max
	%	%	%	%	%	%	%	%	%	%
Copper	Remainder		Remainder		Remainder		Remainder		Remainder
Tin	2.0	3.5	4.0	6.0	6.0	8.0	9.7	10.5	6.5	7.5
Zinc	7.5	9.5	4.5	6.0	1.7	3.2	1.75	2.75	1.75	3.0
Lead	4.0	6.0	4.0	6.0	2.7	3.5	-	1.5	0.10	0.50
Phosphorous	-	-	-	0.02	-	0.02	-	0.02	-	0.02
Nickel	-	2.0	-	2.0	-	2.0	-	1.0	5.25	5.75
Iron	-	-	-	0.25	-	0.2	-	0.15§	-	§
Aluminium	-	0.01	-	0.01	-	0.01	-	0.01	-	0.01
Manganese	-	-	-	-	-	-	-	-	-	0.02
Antimony	-	-	-	-	-	0.25	-	§	-	§
Arsenic	-	-	-	-	-	0.15	-	§	-	§
iron-arsenic + antimony	-	0.75	-	0.50	-	0.40	-	0.02	-	0.01
Silicon	-	0.02	-	0.02	-	0.01	-	0.02	-	-
Bismuth	-	0.10	-	0.05	-	0.05	-	0.03	-	-
Sulphur	-	0.1	-	0.1	-	0.1	-	0.1	-	-
Total Impurities	-	1.0	-	1.0	-	0.70	-	0.50	-	0.50