C3603

C3603, categorized as Free cutting brass, represents a notably enhanced version of 60/40 brass, known for its exceptional free cutting characteristics. It finds application in the large-scale manufacturing of brass components demanding maximum output and extended tool longevity. This is particularly applicable in scenarios where no additional cold forming is necessary following the machining process.

CHEMICAL COMPOSITION
ElementsMin (%)Max (%)
Cu57.0061.00
Pb1.803.70
Fe0.35
Sn+Fe0.60
ZnRemainder
MECHANICAL PROPERTIES ACCORDING TO H3250 JIS C3603 (AS PER TEMPER BD)
Range From To UTS Min (Kg/mm²) PS Min Elongation Min (%) Hardness Min Hardness Max
Round (Dia) 1.5 75 315 20
Hex (A/F) 3 70 315 20
Square (A/F) 3 60 315 20
Rectangle (Thickness) 3 50 315 20
PHYSICAL PROPERTIES
Melting Point – Liquidus°F 1630
Melting Point – Solidus°F 1610
Densitylb/cu in. at 68°F 0.306
Specific Gravity 8.47
Electrical Conductivity% IACS at 68°F 28
Thermal ConductivityBtu/ sq ft/ ft hr/ °F at 68°F 71
Coefficient of Thermal Expansion 68-57210⁻⁶ per °F (68 – 572°F) 11.6
Specific Heat CapacityBtu/ lb /°F at 68°F 0.09
Modulus of Elasticity in Tensionksi 14000
Modulus of Rigidityksi 5300
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 Poor
Capacity for Being Hot Formed Excellent
Machinability Rating 90

C3603

Send Enquiry