| Elements |
Min (%) |
Max (%) |
| Cu |
Remainder |
| Pb |
1.70 |
2.80 |
| Sn |
- |
0.20 |
| Fe |
- |
0.20 |
| As |
0.08 |
0.15 |
| Total Others |
- |
0.50 |
| Zn |
35.00 |
37.00 |
Mechanical Properties According To BS2874 (As Per Temper M)
| Range (mm) |
From |
To |
UTS Min (N/mm²) |
PS Min (N/mm²) |
Elongation Min (%) |
Hardness Min |
Hardness Max |
| Round (Dia) |
6 |
18 |
380 |
- |
20 |
- |
- |
| |
18 |
40 |
350 |
- |
22 |
- |
- |
| |
40 |
75 |
350 |
- |
25 |
- |
- |
| Hex (A/F) |
6 |
18 |
380 |
- |
20 |
- |
- |
| |
18 |
40 |
350 |
- |
22 |
- |
- |
| |
40 |
70 |
350 |
- |
25 |
- |
- |
| Square (A/F) |
6 |
18 |
380 |
- |
20 |
- |
- |
| |
18 |
40 |
350 |
- |
22 |
- |
- |
| |
40 |
60 |
350 |
- |
25 |
- |
- |
| Rectangle (Thickness) |
6 |
18 |
380 |
- |
20 |
- |
- |
| |
18 |
40 |
350 |
- |
22 |
- |
- |
| |
40 |
50 |
350 |
- |
25 |
- |
- |
| PHYSICAL PROPERTIES |
| Melting Point |
910°C |
| Density |
8.43 g/cm³ |
| Specific Heat |
377 |
| Thermal conductivity (20°C) |
117 W/m°K |
| Thermal expansion coefficient (20-200°C) |
20.7 x 10-6 per °C |
| Electrical conductivity |
26% IACS |
| Electrical Resistivity |
0.066 ohm mm²/m |
| Modulus of Elasticity |
106 KN/mm² |
| FABRICATION PROPERTIES |
| Hot Working Temperature Range |
800-850°C |
| Hot Formability |
Very good |
| Cold Formability |
Good |
| Machinability rating (free cutting brass = 100) |
75 % |
| Annealing Temp. Range |
450-650°C |
| Stress Relieving Temp. Range |
250-350°C |
| Soldering |
Excellent |
| Brazing |
Good |
| Oxy-acetylene welding |
Not recommended |
| Gas-shielded arc welding |
Not recommended |
| Resistance welding |
Not recommended |
