IS 320 HT1

320 HT1 is characterized by favorable torsional properties and general corrosion resistance. Manganese bronze, as a material, demonstrates robust resilience when exposed to dry gases, dilute alkalies, sulfides, most organic solvents, and acids. However, it’s important to note that while 320 HT1 exhibits typical resistance to various chemicals, it’s advisable to avoid contact with substances like ammonia, mercury, and most forms of chlorine gas.

CHEMICAL COMPOSITION
ElementsMin (%)Max (%)
Cu56.0060.00
Pb0.201.50
Sn0.201.00
Fe0.201.25
Al0.20
Mn0.252.00
Total Others0.50
ZnRemainder

 

MECHANICAL PROPERTIES ACCORDING TO IS 320 HT1 (AS PER TEMPER HB)
Range (mm) From To UTS Min (MPa) PS Min (MPa) Elongation Min (%) Hardness Min Hardness Max
Round (Dia)24048012
407546015
Hex (A/F)24048012
407046015
Square (A/F)104048012
406046015
Rectangle (Thickness)104048012
PHYSICAL PROPERTIES
Melting Point940°C
Density8.42 g/cm³
Specific Heat380 J/Kg°K
Thermal conductivity (RT)88 W/m°K
Thermal expansion coefficient (20-200°C)20 x 10-6
Electrical conductivity18% IACS
Electrical Resistivity0.082 ohm mm²/m
FABRICATION PROPERTIES
Capacity for being Cold formedPoor
Capacity for being Hot workedGood
Machinability Ration30%
Resistance to CorrosionExcellent
Suitability for solderingExcellent

IS 320 HT1

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