C67420

C67420 is a distinct brass alloy known for its exceptional wear resistance, primarily attributed to the presence of embedded silicides within its structure. This alloy finds valuable application in the manufacturing of slide bearings and valve guides, as well as serving as a material of choice for construction components in the field of mechanical engineering. Furthermore, C67420 is particularly well-suited for use in hot stamped parts where elevated mechanical strength and enhanced wear resistance are essential attributes.

CHEMICAL COMPOSITION
ElementsMin (%)Max (%)
Cu57.0058.50
Pb0.250.80
Sn0.35
Al1.002.00
Fe0.150.55
Mn1.502.50
Ni0.25
Si0.250.70
Total Others0.50
ZnRemainder

 

MECHANICAL PROPERTIES ACCORDING TO UNS C67420 (AS PER TEMPER HO2)
Range (Inch) From To UTS Min (ksi) PS Min (ksi) Elongation Min (%) Hardness Min (HRB) Hardness Max
Round (Dia) 0.059 2.953 87 46 15 85
Hex (A/F) 0.118 2.756 87 46 15 85
Square (A/F) 0.118 2.362 87 46 15 85
Rectangle (Thickness) 0.118 1.968 87 46 15 85
Range (mm) From To UTS Min (MPa) PS Min (MPa) Elongation Min (%) Hardness Min (HRB) Hardness Max
Round (Dia) 1.5 75 600 317 15 85
Hex (A/F) 3 70 600 317 15 85
Square (A/F)

3

60

60 600 317 15 85
Rectangle (Thickness) 3 50 600 317 15 85
PHYSICAL PROPERTIES
Melting Point – Liquidus°F1650
Melting Point – Solidus°F1590
Density lb/cu in. at 68°F0.299
Specific Gravity8.27
Electrical Conductivity % IACS at 68°F18
Thermal Conductivity Btu/ sq ft/ ft hr/ °F at 68°F51
Coefficient of Thermal Expansion 68-57210⁻⁶ per °F (68 – 572°F)11
Specific Heat Capacity Btu/ lb /°F at 68°F0.09
Modulus of Elasticity in Tension ksi14000
Modulus of Rigidity ksi5250
Fabrication Properties
Technique Suitability
SolderingFair
BrazingGood
Oxyacetylene WeldingNot Recommended
Gas Shielded Arc WeldingFair
Coated Metal Arc WeldingNot Recommended
Spot WeldGood
Seam WeldGood
Butt WeldGood
Capacity for Being Cold WorkedPoor
Capacity for Being Hot FormedExcellent
Forgeability Rating100
Machinability Rating50

C67420

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