En1982 ; Din1705
This material has proved its value in sliding bearings and withstands moderate bearing pressures very well with adequate lubrication. Especially in the engineering industry, can be manufactured economically from this material. The unique composition results in good wear and running properties, as well as good relief of end pressures and excessive stresses from inadequate or occasional interruptions of lubrication. The surface finish and hardness requirements for the opposing material are not so great as with hightin bronzes. With good lubrication, unhardened shafts can be used. The alloy has good sliding and emergency running properties
(%max, unless shown as range or min)
* Cu value includes Ag.
** Ni value includes Co.
Note: Cu + Sum of Named Elements, 99.5% min.
* Bar, Rod – ASTM B150
* AMS 4640
* SAE J461
* SAE J463
* Hot Forming
Standard Temper Designation:
* Bar, Rod – HR50 – Drawn and Stress Relieved
* Shapes – M30 – As Hot Extruded; O30 – Hot Extruded and Annealed
|Oxyacetylene Welding||Not Recommended|
|Gas Shielded Arc Welding||Good|
|Coated Metal Arc Welding||Good|
|Capacity for Being Cold Worked||Poor|
|Capacity for Being Hot Formed||Good|
Mechanical Properties (ASTM B505)
Diameter or Distance Between
Parallel Surfaces, in. [mm]
Tensile Strength, min
Yield Strength, at 0.5% Extension Under Load, min
Elongation in 4xdiameter
or 4xthickness, min, %
Rod and Bar
1/2 [12.7] to 1 [25.4] incl.
over 1 [25.4] to 2 [50.8] incl.
over 2 [50.8] to 3 [76.2] incl.
|Melting Point – Liquidus||1930 F||1054 C|
|Melting Point – Solidus||1895 F||1035 C|
|Density||0.274 lb/in3 at 68 F||7.58 gm/cm3 at 20 C|
|Electrical Resistivity||116 ohms-cmil/ft at 68 F||19.28 microhm-cm at 20 C|
|Electrical Conductivity||7 %IACS at 68 F||0.041 MegaSiemens/cm at 20 C|
|Thermal Conductivity||22.6 Btu · ft/(hr · ft2·°F) at 68 F||39.1 W/m ·°K at 20 C|
|Coefficient of Thermal Expansion||9·10-6 per °F (68-572 F)||16.2·10-6 per °C (20-300 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||17500 ksi||121000 MPa|
|Modulus of Rigidity||6400 ksi||44130 MPa|