C34000

C34000 is the go-to choice for machining, scoring a perfect 100% on the machining index. These alloys shine in hot stamping when the resulting forged components undergo extensive machining. It’s the top pick for applications involving minimal cold working, like knurling. This material’s ductility makes it a standout for crafting wires, rods, and sections.

CHEMICAL COMPOSITION
Elements Min (%) Max (%)
Cu 62.00 65.00
Pb 0.80 1.50
Fe 0.15
Total Others 0.4
Zn Remainder
(1) Cu + Sum of Named Elements 99.6% min. (2) For flat products, the iron shall be 0.10% max.
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 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 Good
Capacity for Being Hot Formed Poor
Machinability Rating 70

C34000

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