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CuSn7Zn4Pb7-C, RG7

En1982; Din1705

  • Automotive
  • Industrial
  • Machinery

Typical Uses

Automotive
Automotive Fittings, Fasteners, Washers, Industrial Bearings for Cranes, Trunion Bearings, Roll Neck Bearings, Rolling Mill Bearings, Linkage Bushings for Presses, Fuel Pump Bushings, Water Pump Bushings, Diesel Engine Wrist Pin Bushings, Forging Press Toggle Lever Bearings, Hydraulic Press Stuffing Box, Hydraulic Press Main Lining, Insert Bearings, Bearings, Thrust Washers, Pumps, Bushings, Machine Parts, Pump Impellers, General Purpose Bushings, Fittings, Pump Fixtures, Main Spindle Bearings, Machine Tool Bearings

Square : Up to 153mm
Hollow : 26X14mm - 292X238mm
Round : 10mm-303mm
Hexagonal : Up to 76mm
Rectangle : Up to 303mm W
Bar Length : 3000mm
Product availabillity

CC493K

Chemical Composition

(%max, unless shown as range or min)

Applicable Specifications

Cu Ni P Pb Sn Zn Al Fe S Sb Si
Min/Max 81.0-85.0 2.0 0.1 5.0-8.0 6.0-8.0 2.0-5.0 0.01 0.2 0.1 Sb 0.01

*BS EN 1982

Fabrication Processes

* Continuous Casting

Fabrication Properties

Joining Technique Suitability
Soldering Excellent
Brazing Good
Oxyacetylene Welding Not Recommended
Gas Shielded Arc Welding Not Recommended
Coated Metal Arc Welding Not Recommended
Machinability Rating 70

 Mechanical Properties

Tensile Strength
RN/mmmin.
0.2% Proof Strength
Rp0.2 N/mmmin.
Elongation A % min. Hardness HB min.
260 120 12 70

Physical Properties

US Customary Metric
Melting Point – Liquidus 1790 F 977 C
Melting Point – Solidus 1570 F 854 C
Density 0.322 lb/in3 at 68 F 8.91 gm/cm3 at 20 C
Specific Gravity 8.91 8.91
Electrical Resistivity 85.9 ohms-cmil/ft at 68 F 14.29 microhm-cm at 20 C
Electrical Conductivity 12 %IACS at 68 F 0.07 MegaSiemens/cm at 20 C
Thermal Conductivity 33.6 Btu · ft/(hr · ft2·°F) at 68 F 58.2 W/m ·°K at 20 C
Coefficient of Thermal Expansion 10.0·10-6 per °F (68-212 F) 18.0·10-6 per °C (20-100 C)
Specific Heat Capacity 0.09 Btu/lb/°F at 68 F 377.1 J/kg · °K at 20 C
Modulus of Elasticity in Tension 14500 ksi 100000 MPa