C48200
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 |
59.00 |
62.00 |
| Pb |
0.40 |
1.00 |
| 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) |
UTS Max (ksi) |
PS Min (ksi) |
Elongation Min (%) |
Hardness Min (HRB) |
Hardness Max (HRB) |
| Round (Dia) |
0.059 |
0.500 |
60 |
- |
27 |
18 |
- |
- |
| 0.500 |
1.000 |
60 |
- |
27 |
18 |
65 |
85 |
| 1.000 |
2.000 |
58 |
- |
26 |
20 |
60 |
85 |
| 2.000 |
2.953 |
54 |
- |
25 |
20 |
60 |
85 |
| Hex (A/F) |
0.118 |
0.500 |
60 |
- |
27 |
18 |
- |
- |
| 0.500 |
1.000 |
60 |
- |
27 |
18 |
65 |
85 |
| 1.000 |
2.000 |
58 |
- |
26 |
20 |
60 |
85 |
| 2.000 |
2.756 |
54 |
- |
25 |
20 |
60 |
85 |
| Square (A/F) |
0.118 |
0.500 |
60 |
- |
27 |
18 |
- |
- |
| 0.500 |
1.000 |
60 |
- |
27 |
18 |
65 |
85 |
| 1.000 |
2.000 |
58 |
- |
26 |
20 |
60 |
85 |
| 2.000 |
2.362 |
54 |
- |
25 |
20 |
60 |
85 |
| Rectangle |
Thickness |
0.118 |
0.500 |
60 |
- |
27 |
18 |
- |
- |
| Thickness |
0.500 |
1.000 |
60 |
- |
27 |
18 |
65 |
85 |
| Thickness |
1.000 |
1.968 |
58 |
- |
26 |
20 |
60 |
85 |
| Range (mm) |
From |
To |
UTS Min (MPa) |
UTS Max (MPa) |
PS Min (MPa) |
Elongation Min (%) |
Hardness Min (HRB) |
Hardness Max (HRB) |
| Round (Dia) |
1.5 |
12 |
415 |
- |
185 |
18 |
- |
- |
| 12 |
25 |
415 |
- |
185 |
18 |
65 |
85 |
| 25 |
50 |
400 |
- |
180 |
20 |
60 |
85 |
| 50 |
75 |
370 |
- |
170 |
20 |
60 |
85 |
| Hex (A/F) |
3 |
12 |
415 |
- |
185 |
18 |
- |
- |
| 12 |
25 |
415 |
- |
185 |
18 |
65 |
85 |
| 25 |
50 |
400 |
- |
180 |
20 |
60 |
85 |
| 50 |
70 |
370 |
- |
170 |
20 |
60 |
85 |
| Square (A/F) |
3 |
12 |
415 |
- |
185 |
18 |
- |
- |
| 12 |
25 |
415 |
- |
185 |
18 |
65 |
85 |
| 25 |
50 |
400 |
- |
180 |
20 |
60 |
85 |
| 50 |
60 |
370 |
- |
170 |
20 |
60 |
85 |
| Rectangle |
Thickness |
3 |
12 |
415 |
- |
185 |
18 |
- |
- |
| Thickness |
12 |
25 |
415 |
- |
185 |
18 |
65 |
85 |
Physical Properties
| PHYSICAL PROPERTIES |
| Melting Point – Liquidus °F |
1650 |
| Melting Point – Solidus °F |
1630 |
| Density lb/cu in. at 68°F |
0.305 |
| Specific Gravity |
8.440 |
| Electrical Conductivity % IACS at 68°F |
26 |
| Thermal Conductivity BTU/ sq ft/ ft hr/ °F at 68°F |
67 |
| Coefficient of Thermal Expansion 68-57210?? per °F (68 – 572°F) |
11.8 |
| Specific Heat Capacity Btu/ lb /°F at 68°F |
0.09 |
| Modulus of Elasticity in Tension ksi |
15000 |
| Modulus of Rigidity ksi |
5600 |
Fabrication Properties
| FABRICATION PROPERTIES |
| Technique |
Suitability |
| Soldering |
Excellent |
| Brazing |
Good |
| Oxyacetylene Welding |
Not Recommended |
| Gas Shielded Arc Welding |
Not Recommended |
| Coated Metal Arc Welding |
Not Recommended |
| Spot Weld |
Not Recommended |
| Seam Weld |
Not Recommended |
| Butt Weld |
Fair |
| Capacity for Being Cold Worked |
Poor |
| Capacity for Being Hot Formed |
Good |
| Forgeability Rating |
90 |
| Machinability Rating |
50 |
