C48200
C48200 Spec SheetNaval 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) | UTS Min (ksi) |
UTS Max (ksi) |
PS Min (ksi) |
Elongation Min (%) |
Hardness | ||
|---|---|---|---|---|---|---|---|
| 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 | – | – |
| 0.500 – 1.000 | 60 | – | 27 | 18 | 65 | 85 | |
| 1.000 – 1.968 | 58 | – | 26 | 20 | 60 | 85 | |
| Range (mm) | 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 | – | – |
| 12 | 25 | 415 | – | 185 | 18 | 65 | 85 | |
| 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 68–572 × 10⁻⁶ 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 | |
|---|---|
| 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 |
Typical Uses
Fasteners
Industrial
