C3601

C3601, a free machining brass alloy created by combining copper and zinc, boasts the highest degree of machinability among all copper alloys, serving as the benchmark for comparison. C3601 Brass is renowned for its strength and corrosion resistance, closely resembling steel properties, thus making it one of the most widely utilized copper alloys in present-day applications. Achieving precision machining with C3601 Brass is a straightforward endeavor. Despite its ductile nature when softened, C3601 Brass remains a sturdy material for manipulation, upholding its strength even under the most challenging conditions. C3601 Brass develops a delicate protective “patina,” setting it apart from steel and iron, as it remains impervious to rust when exposed to the atmosphere. Thanks to its high density, C3601 Brass is exceptionally well-suited for the production of weighty industrial components. The highly polished finish of C3601 Brass is also a valued attribute. This versatile material is accessible in various shapes, including rounds, flats, squares, hexagons, tubes, plates, and sheets.

CHEMICAL COMPOSITION
ElementsMin (%)Max (%)
Cu59.0063.00
Pb1.803.70
Fe0.30
Sn+Fe0.50
ZnRemainder
MECHANICAL PROPERTIES ACCORDING TO H3250 JIS C3601 (AS PER TEMPER BD)
Range From To UTS Min (N/mm²) PS Min Elongation (%) Hardness Min Hardness Max
Round (Dia) 6 50 345
Hex (A/F) 6 50 345
Square (A/F) 6 50 345
Rectangle (Thickness) 6 50 345
PHYSICAL PROPERTIES
Melting Point – Liquidus°F 1650
Melting Point – Solidus°F 1630
Densitylb/cu in. at 68°F 0.307
Specific Gravity 8.5
Electrical Conductivity% IACS at 68°F 26
Thermal ConductivityBtu/ sq ft/ ft hr/ °F at 68°F 67
Coefficient of Thermal Expansion 68-57210⁻⁶ per °F (68 – 572°F) 11.4
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 Fair
Capacity for Being Hot Formed Fair
Machinability Rating 100

C3601

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