Hard bronze that presents excellent friction properties. It is used for the parts that work at high speeds and pressures. It is shock-resistant.
It is the most used in mechanics, chemical, shipbuiling, civil engineering industries and high pressure faucets. That alloy is comes into current use for some parts of tool-machines, hydraulic press : bearings, sockets, tangent wheels, nuts and screws of press, guides, boots, etc... |
Main standards and correspondences: |
NFA |
EN |
MARINE |
MILITAIRE |
DIN |
ASTM |
53
707 |
EN
1982 |
C322
- IT134 |
GAM-
MM12 |
1705
GZ/GC CuSn12 |
B505.907 |
UNI |
NBN |
ISO |
BS |
UNS |
SAE |
1701
/ 1703 |
267 |
1338 |
1400
/BP2C |
C91700 |
65 |
|
Chemical compound of cast products (NFA 53-707): |
Agent: |
Sn |
Pb |
Zn |
Ni |
Cu |
P |
Max. other materials |
Others |
Fe |
S |
Si |
Al |
Mini
: |
10,5
|
-
|
- |
- |
Reste |
- |
- |
- |
- |
- |
- |
Maxi
: |
13
|
2,5
|
2 |
2 |
|
0,3 |
0,5 |
0,25 |
0,05 |
0,01 |
0,01 |
|
Mechanical characteristics of cast products (NFA 53-707): |
Process |
Tensile strength Rm in MPa |
Conventional elastic limit at 0,2 % (for information) Rp0,2 in MPa |
Stretching after breaking
A % |
Hardness
Brinell HBS |
Y20 |
240 |
130
|
5 |
80 |
Y30 |
- |
- |
- |
90 |
Y70
ouY80 |
270 |
150 |
5 |
90 |
|
Average physical and mechanical properties (for information only): |
Average physical properties: |
Liquidus temperature (°C) |
Solidus temperature (°C) |
Solidification range (°C) |
Mass-volume at 20°C (kg/dm3) |
Linear expansion coefficient (10-6/°C) |
1000 |
820 |
180 |
8,70 |
18 |
Massive heat capacity at 20°C (J/kg.K) |
Heat conductivity at 20°C (W/m.K) |
Electrical conductivity at 20°C (%IACS) |
Electrical resistivity at 20° C (10-8 W.m) |
Coefficient
of resistivity temperature from 0 to
100°C (10-3°C) |
376 |
46 |
10 |
17,2 |
5,8
|
|