IS 320 HT1

DESCRIPTION

320 HT1 possesses good torsional properties and general corrosion resistance. Manganese bronze withstands exposure to dry gases, dilute alkalies, sulfides, most organic solvents and acids. Though 320 HT 1 has common resistance, contact with ammonia, mercury and most chlorine gas should be avoided.

CHEMICAL COMPOSITION

Elements Min (%) Max (%)
Cu56.0060.00
Pb0.201.50
Sn0.201.00
Fe0.201.25
Al-0.20
Mn0.252.00
Total Others - 0.50
Zn Remainder

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)240480-12--
4075460-15--
Hex (A/F)240480-12--
4070460-15--
Square (A/F)1040480-12--
4060460-15--
Rectangle (Thickness)1040480-12--
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

TYPICAL USES

  • Architectural applications
  • High strength components
  • Valves
  • Valve stems
  • Fittings
  • Marine fittings