C35300
C35300 is recognized as the standard material for machining, boasting a machining index of 100%. These alloys not only excel in machining but are also well-suited for hot stamping when the forged components require extensive subsequent machining. They are especially recommended for applications where cold working with minimal reduction, such as knurling, is essential. Additionally, the ductility of this material renders it exceptionally suitable for crafting wires, rods, and sections.
CHEMICAL COMPOSITION
| Elements | Min (%) | Max (%) |
| Cu | 60.00 | 63.00 |
| Pb | 1.50 | 2.50 |
| Fe | – | 0.15 |
| Total Others | – | 0.50 |
| 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 Max (HRB) |
| Round (Dia) | 0.059 | 0.500 | 57 | 80 | 25 | 7 | 60 | 80 |
| 0.500 | 1.000 | 55 | 70 | 25 | 10 | 75 | 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 | 75 | 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 | 1670 |
| 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 |
| Modulus of Elasticity in Tension ksi | 15000 |
| Modulus of Rigidity ksi | 5600 |
| FABRICATION PROPERTIES | |
| Soldering | Excellent |
| Brazing | Good |
| Capacity for being hot worked | 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 |
