C34200
C34200 stands as the standard material for machining, boasting a machining index of 100%. These alloys also prove exceptionally well-suited for hot stamping when the forged components subsequently undergo extensive machining. They are particularly recommended for applications where cold working with minimal reduction, such as knurling, is a requirement. The ductility of this material positions it as an ideal choice for manufacturing wires, rods, and sections.
CHEMICAL COMPOSITION
| Elements | Min (%) | Max (%) |
| Cu | 62.00 | 65.00 |
| Pb | 1.50 | 2.50 |
| Fe | – | 0.15 |
| Total Others | – | 0.4 |
| Zn | Remainder | |
MECHANICAL PROPERTIES ACCORDING TO ASTM B453 (AS PER TEMPER HO2)
| Range (Inch) | From | To | UTS Min (ksi) | UTS Max (ksi) | PS Min (ksi) | Elongation Min (%) | Hardness Min (HRB) | Hardness Min (HRB) |
| Round (Dia) | 0.059 | 0.500 | 57 | 80 | 25 | 7 | 60 | 80 |
| 0.500 | 1.000 | 55 | 70 | 25 | 10 | 50 | 75 | |
| 1.000 | 2.953 | 50 | 62 | 20 | 15 | 40 | 70 | |
| Hex (A/F) | 0.118 | 0.500 | 57 | 80 | 25 | 7 | 60 | 80 |
| 0.500 | 1.000 | 55 | 70 | 25 | 10 | 50 | 75 | |
| 1.000 | 2.756 | 50 | 62 | 20 | 15 | 40 | 70 | |
| Square (A/F) | 0.118 | 0.500 | 57 | 80 | 25 | 7 | 60 | 80 |
| 0.500 | 1.000 | 55 | 70 | 25 | 10 | 50 | 75 | |
| 1.000 | 2.362 | 50 | 62 | 20 | 15 | 40 | 70 |
| 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 | 395 | 555 | 170 | 7 | 60 | 80 |
| 12 | 25 | 380 | 485 | 170 | 10 | 50 | 75 | |
| 25 | 75 | 345 | 425 | 140 | 15 | 40 | 70 | |
| Hex (A/F) | 3 | 12 | 395 | 555 | 170 | 7 | 60 | 80 |
| 12 | 25 | 380 | 485 | 170 | 10 | 50 | 75 | |
| 25 | 70 | 345 | 425 | 140 | 15 | 40 | 70 | |
| Square (A/F) | 3 | 12 | 395 | 555 | 170 | 7 | 60 | 80 |
| 12 | 25 | 380 | 485 | 170 | 10 | 50 | 75 | |
| 25 | 60 | 345 | 425 | 140 | 15 | 40 | 70 |
| PHYSICAL PROPERTIES | |
| Melting Point – Liquidus°F | 1700 |
| Melting Point – Solidus°F | 1630 |
| Density lb/cu in. at 68°F | 0.306 |
| Specific Gravity | 8.47 |
| 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) | 11.3 |
| 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 | Fair |
| Capacity for Being Hot Formed | Poor |
| Machinability Rating | 90 |
