IS 4413

IS 4413, commonly known as yellow brass, boasts a copper content of no less than 62%. Within the realm of cold forming processes, CuZn37 takes the leading role as the primary brass alloy. While certain brasses with reduced zinc content may exhibit improved cold forming properties, CuZn37 reigns supreme as the most prevalent alloy for cold forming applications.

Several compelling factors contribute to its widespread usage. Firstly, its cost-effectiveness cannot be ignored. The lower price of zinc compared to copper makes CuZn37 a financially attractive choice. Additionally, this alloy’s forming characteristics align seamlessly with the requirements of a diverse range of applications. As a result, IS 4413 stands as a reliable and versatile option for fulfilling various cold forming needs.

CHEMICAL COMPOSITION
ElementsMin (%)Max (%)
Cu62.0065.00
Pb0.30
Fe0.10
Total Others0.60
ZnRemainder

 

MECHANICAL PROPERTIES ACCORDING TO IS 4413 (AS PER TEMPER HB)
Range (mm) From To UTS Min (MPa) UTS Max (MPa) UTS Max (MPa) PS MinElongation Min (%) Hardness Min Hardness Max
Round (Dia) 1.5 6 460 620
Hex (A/F) 3 6 460 620
Square (A/F) 3 6 460 620
Rectangle (Thickness) 3 6 460 620
PHYSICAL PROPERTIES
Melting Point – Liquidus°F 1680
Density lb/cu in. at 68°F 0.305
Specific Gravity 8.44
Electrical Conductivity % IACS at 68°F 27.6
Thermal Conductivity Btu/ sq ft/ ft hr/ °F at 68°F 67
Coefficient of Thermal Expansion 68-57210⁻⁶ per °F (68 – 572°F) 11.4
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 Excellent
Oxyacetylene Welding Good
Gas Shielded Arc Welding Fair
Coated Metal Arc Welding Not Recommended
Spot Weld Good
Seam Weld Not Recommended
Butt Weld Good
Capacity for Being Cold Worked Excellent
Capacity for Being Hot Formed Fair
Machinability Rating 35

IS 4413

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