GUNMETAL BRONZE ALLOYS
Chemical Composition
LTB-1
Standard: IS: 318-1981
Copper Alloys
CU
SN
PB
ZN
FE
NI
AL
SI
SB
Impurities
Rem.
6-8
2.5-3.5
1.5-3
0.3
2
0.01
0.7
LTB-2
4-6
0.35
0.02
0.4
0.8
LG-1
Standard: BS 1400
P
S
BI
2-3.5
7-9.5
0.5
0.03
0.25
0.08
0.1
1
LG-2
0.05
LG-4
6-8.05
0.2
RG-5
Standard: DIN
MN
84-86
0.06
RG-7
83-85
6.8-8
5.3-7
3.3-5
1-1.5
BC-1
Standard: JIS
79-83
2 - 4
3-7
8-12
BC-2
86-90
7 - 9
0-1
3-5
BC-6
83 - 87
4 - 6
BC-7
5 - 7
1-3
C83600
Standard: ASTM
84 - 86
4.3 - 6
4 - 5.7
0.005
C84400
79 - 82
7-10
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