CZ134
CZ134, identified as naval brass, finds significant application in machine hardware, screw machine products, and valve stems. This particular variant of naval brass, designated as CZ134, is notably well-suited for processes involving hot forging, pressing, and machining. Featuring heightened ductility, naval brass exhibits exceptional electrical and thermal conductivity. Additionally, CZ134 naval brass showcases commendable resistance to creep and impressively high impact strength.
CHEMICAL COMPOSITION
| Elements | Min (%) | Max (%) |
| Cu | 59.00 | 62.00 |
| Pb | 1.30 | 2.20 |
| Sn | 0.50 | 1.00 |
| Fe | – | 0.10 |
| Total Others | – | 0.20 |
| Zn | Remainder | |
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 | 400 | 170 | 15 | – | – |
| 18 | 40 | 350 | 150 | 20 | – | – | |
| Hex (A/F) | 6 | 18 | 400 | 170 | 15 | – | – |
| 18 | 40 | 350 | 150 | 20 | – | – | |
| Square (A/F) | 6 | 18 | 400 | 170 | 15 | – | – |
| 18 | 40 | 350 | 150 | 20 | – | – | |
| Rectangle (Thickness) | 6 | 18 | 400 | 170 | 15 | – | – |
| 18 | 40 | 350 | 150 | 20 | – | – |
| PHYSICAL PROPERTIES | |
| Melting Points – Liquidus 0F | 1650 |
| Melting Point – Solidus°F | 1630 |
| Density lb/cu in. at 68°F | 0.305 |
| Specific Gravity | 8.44 |
| Electrical Conductivity % IACS at 68°F | 26 |
| Thermal Conductivity Btu/ sq ft/ ft hr/ °F at 68°F | 67 |
| Coefficient of Thermal Expansion 68-57210⁻⁶ 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 | 70 |
