C35000

C35000 is the go-to choice as the standard material for machining, boasting a machining index of 100%. These alloys also prove particularly suitable for hot stamping when the forged components subsequently undergo extensive machining. It is highly recommended for applications that involve cold working with minimal reduction, such as knurling. The ductility of this material positions it as an ideal choice for manufacturing wires, rods, and sections.

CHEMICAL COMPOSITION
ElementsMin (%)Max (%)
Cu60.0063.00
Pb0.802.00
Fe0.15
Total Others0.40
ZnRemainder
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 1680
Melting Point – Solidus°F 1640
Density lb/cu in. at 68°F 0.306
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) 11.3
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
Excellent 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 Hot Formed Fair
Capacity for Being Hot Formed Fair
Forgeability Rating 50
Machinability Rating 70

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