Product Details, Specifications, and Technical Information
Bronze Round Bar 642 is an aluminum-silicon bronze that offers high strength, excellent corrosion resistance, good fatigue resistance, anti-galling properties, and high machinability. 642 has the highest machinability rating of any non-leaded bronze, additionally the high aluminum and silicon contents make this one of the lightest bronzes. Brazing and most forms of welding are only rated as fair though. This material is typically used to make blots, gears, and valves.

Dimension Name | Specification |
Max Length | 144 |
Diameter | 0.75 |
Alloy | 642 |
MTR Availability | Yes |
Full Length | true |
Material | Bronze |
Shape | Bar-Round |
Custom Cut Warehouse | 1 |
This material meets the following specs: ASTM -B150, AMS -4634
Weight/Lineal Foot | ||
1.52 pounds |
Mechanical Properties | |
Property | Value |
Brinell Hardness 500 kg load | 130 min |
Rockwell Hardness B Scale | 80 min |
Density g/cm^3 | 7 |
Elongation Typical % | 14 |
Melting Point °F | 1800 - 1840 |
Modulus of Elasticity KSI x 10^3 | 16 |
Specific Heat BTU/lb-°F | 9 |
Thermal Conductivity BTU-in/hr-ft^2-°F | 312 |
Tensile Strength KSI | 75 min |
Shear Strength KSI | 56 |
Yield Strength KSI | 35 min |
Chemistry Information: 642 Bronze | |
Element | Percentage |
Si | 1.5 - 2.2 |
Al | 6.3 - 7.6 |
Cu | 88.2 - 92.2 |
Zn | 0 - 0.5 |
Fe | 0 - 0.3 |
Ni | 0 - 0.25 |
Sn | 0 - 0.2 |
As | 0 - 0.15 |
Mn | 0 - 0.1 |
Pb | 0 - 0.05 |
Residual | 0 - 0.5 |