C3712

Sonal Industries - +91-9426408439 - sonalind2003@gmail.com

DESCRIPTION

C3712, Engraving brass, are 60/40 alpha-beta brasses with different levels of lead added to give free machining properties. They are widely used for engraved plates and plaques, builders hardware, gears. They should not be used for acid etched work, for which the single phase alpha brasses should be used.

CHEMICAL COMPOSITION

Elements Min (%) Max (%)
Cu 58.00 62.00
Pb 0.25 1.20
Fe+Sn - 0.80
Zn Remainder

MECHANICAL PROPERTIES ACCORDING TO EN12164 (AS PER TEMPER R410)

Range (Inch) From To UTS Min (Ksi) PS Min (Ksi) Elongation Min (%) Hardness Min Hardness Max
Round (Dia) 6 75 315 - 15 - -
Hex (A/F) 6 70 70 - 15 - -
Square (A/F) 6 60 315 - 15 - -
Rectangle (Thickness) 6 50 315 - 15 - -
PHYSICAL PROPERTIES
Melting Point - Liquidus°F 1650
Melting Point - Solidus°F 1630
Density lb/cu in. at 68°F 0.304
Specific Gravity 8.41
Electrical Conductivity % IACS at 68°F 27
Thermal Conductivity Btu/ sq ft/ ft hr/ °F at 68°F 69
Coefficient of Thermal Expansion 68-57210⁻⁶ per °F (68 – 572°F) 11.6
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 Good
Oxyacetylene Welding Not Recommended
Gas Shielded Arc Welding Not Recommended
Coated Metal Arc Welding Not Recommended
Not Recommended Not Recommended
Seam Weld Not Recommended
Butt Weld Fair
Capacity for Being Cold Worked Fair
Capacity for Being Hot Formed Excellent
Machinability Rating 70

TYPICAL USES

  • Builders Hardware
  • Consumer
  • Building
  • Industrial