IS 8737MOD

IS 8737 serves as the benchmark materials for hot working processes. The average lead content contributes to favorable machinability of the forged components. Additionally, due to its composition, this alloy is well-suited for crafting LPG Valves.

CHEMICAL COMPOSITION
ElementsMin (%)Max (%)
Cu56.5060.000
Pb1.002.00
Fe0.30
Mn0.50
Total Others0.75
ZnRemainder
MECHANICAL PROPERTIES ACCORDING TO IS 8737 MOD (AS PER TEMPER HB)
Range (mm) From To UTS Min (MPa) PS Min (MPa) Elongation Min (%) Hardness Min Hardness Max
Round (Dia) 1.5 75 392 18
Hex (A/F) 3 70 392 18
Square (A/F) 3 60 392 18
PHYSICAL PROPERTIES
Physical PropertiesMetricEnglish
Density8.40 g/cc0.303 lb/in3
CTE, linear26.0 ᶙm/m-˚C14.4 ᶙin/in-˚F
Specific Heat Capacity0.380 J/g-˚C0.0908 BTU/lb-˚F
Thermal Conductivity113 W/m-K784 BTU-in/hr-ft²-˚F
Melting Point880-900 ˚C1620 – 1650 ˚F
Solidus880 ˚C1620 ˚F
Liquidus900 ˚C1650˚F
FABRICATION PROPERTIES
Machinability (CuZn39Pb3 = 100 %)80%
Capacity for being cold workedPoor
Capacity for being hot workedexcellent

IS 8737MOD

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