DESCRIPTION
Naval Brass is a 60:40 copper zinc alloy to which about 1% of tin has been added to improve
the corrosion resistance, particularly to dezincification. The alloy is a two phase
alpha-beta brass, hence has reasonably high strength with lower ductility, this alloy is
suitable for Hot forging, pressing and machining.
CHEMICAL COMPOSITION
| Elements |
Min (%) |
Max (%) |
| Cu |
62.00 |
65.00 |
| Pb |
- |
0.20 |
| Sn |
0.50 |
1.00 |
| Fe |
- |
0.10 |
| Total Others |
- |
0.40 |
| Zn |
Remainder |
Mechanical Properties According To ASTM B21 (As Per Temper HO2)
| Range (Inch)
|
From |
To |
UTS Min (Ksi) |
PS Min (Ksi) |
Elongation Min (%) |
Hardness Min (HRB) |
Hardness Max (HRB) |
| Round (Dia) |
0.059 |
0.500 |
58 |
27 |
22 |
- |
- |
| 0.500 |
1.000 |
56 |
27 |
25 |
- |
- |
| 1.000 |
2.000 |
54 |
26 |
25 |
- |
- |
| 2.000 |
2.953 |
52 |
25 |
27 |
- |
- |
| Hex (A/F) |
0.118 |
0.500 |
58 |
27 |
22 |
- |
- |
| 0.500 |
1.000 |
56 |
27 |
25 |
- |
- |
| 1.000 |
2.000 |
54 |
26 |
25 |
- |
- |
| 2.000 |
2.756 |
52 |
25 |
27 |
- |
- |
| Square (A/F) |
0.118 |
0.500 |
58 |
27 |
22 |
- |
- |
| 0.500 |
1.000 |
56 |
27 |
25 |
- |
- |
| 1.000 |
2.000 |
54 |
26 |
25 |
- |
- |
| 2.000 |
2.362 |
52 |
25 |
27 |
- |
- |
| Rectangle (Thickness) |
0.500 |
1.000 |
56 |
27 |
25 |
- |
- |
| 1.000 |
2.000 |
54 |
26 |
25 |
- |
- |
| Range (Inch)
|
From |
To |
UTS Min (MPa) |
PS Min (MPa) |
Elongation Min (%) |
Hardness Min (HRB) |
Hardness Max (HRB) |
| Round (Dia) |
3 |
12 |
400 |
185 |
22 |
- |
- |
| 12 |
25 |
385 |
185 |
25 |
- |
- |
| 25 |
50 |
370 |
180 |
25 |
- |
- |
| 50 |
75 |
360 |
170 |
27 |
- |
- |
| Hex (A/F) |
12 |
25 |
385 |
185 |
25 |
- |
- |
| 25 |
50 |
370 |
180 |
25 |
- |
- |
| 50 |
65 |
360 |
170 |
27 |
- |
- |
| Square (A/F) |
3 |
12 |
400 |
185 |
22 |
- |
- |
| 12 |
25 |
385 |
185 |
25 |
- |
- |
| 25 |
50 |
370 |
180 |
25 |
- |
- |
| 50 |
60 |
360 |
170 |
27 |
- |
- |
| Rectangle (Thickness) |
3 |
12 |
400 |
185 |
22 |
- |
- |
| 12 |
25 |
385 |
185 |
25 |
- |
- |
| 25 |
50 |
370 |
180 |
25 |
- |
- |
| PHYSICAL
PROPERTIES |
| Melting Points - Liquidus 0F |
1650 |
| Melting Points - Solidus 0F |
1630 |
| Density lb/cu in. at 68 0F |
0.304 |
| Specific Gravity |
8.41 |
| Electrical Conductivity % IACS at 68 0F |
26 |
| Thermal conductivity Btu/ Sq ft / ft hr / 0F at 680F |
67 |
| Coefficient of Thermal Expansion 68-57210 -6 Per 0F (68-5720F) |
11.8 |
| Specific Heat capacity Btu/ lb /0F at 680F |
0.09 |
| Modulus of Elasticity in Tension ksi |
15000 |
| Modulus of Rigidity ksi |
5600 |
| FABRICATION
PROPERTIES |
| Technique |
Suitability |
| Capacity for being Cold Worked |
Fair |
| Hot Worked |
Excellent |
| Machinability Rating |
30% |
| Forgeability Rating |
90% |
| Silver Alloy Brazing |
Excellent |
| Soft Soldering |
Excellent |
| Oxyacetylene Welding |
Good |
TYPICAL USES
- Fasteners
- Industrial
- Marine
