CC 493K / Rg7

Gunmetal, Red Bronze etc.

Rg7 is the most common bronze alloy worldwide. The material properties makes this alloy well suited for bearings, valves, slideplates and similar products. Pressure-tight with good dry running properties and easy to machine simply makes this an excellent all around bronze alloy.

Areas of use
LM & LMF standard bearings, sliding parts, valves, pump housings, water and steam fittings <225°C, and much more.

Delivery program
Solid round bar, tube, square, flat and hexagon bars.
 
 
 
 
 
 
 

Category:

Description

Chemical composition (nom.)
– Cu 81-85%
– Sn 6-8%
– Pb 5-8%
– Zn 2-5%

Max impurities
– Ni 2.0 (can be part of the Cu-content)
– Mn 0.2%
– P 0.05%
– Sb 0.2%
– S 0.1%
– Other 0.1%

Mechanical properties
Yield strength (Rp N/mm²): ≥ 120 N/mm²
Tensile strength (Rm N/mm²): ≥ 260 N/mm²
Elongation in % A5: ≥ 12%
Hardness/Brinell: ≥ 70 HB
Density ∼ 8.8
Mating material: Min. surface hardness 200HB. Rec. surface roughness < 1 Ra

Characteristics                                                                                                             The material is not suitable for welding (lead content). The material is suitable for soldering and brazing. The material is also suitable for bonding.

Additional information

C83600, CC491K, CuSn5Pb5Zn5, CW452K, JM1, LG2, NS16530, Rg5, Rödmetall, SAE40, UE5Pb5, UNI-BSZn5