ASTM B62
This specification establishes requirements for an alloy having a
composition of copper, tin, lead, and zinc, used for component
castings of valves, flanges, and fittings. The common trade name of
this alloy is 85-5-5-5; the correct identification is Copper Alloy
UNS No. C83600.
Chemical Properties
| Alloy |
Elements |
Composition, % max |
| UNS C83600 |
Copper |
84.0 - 86.0 |
| Tin |
4.0 - 6.0 |
| Lead |
4.0 - 6.0 |
| Zinc |
4.0 - 6.0 |
| Nickel incl Cobalt |
1.0 A |
Note A: In determining copper minimum, copper may be calculated as copper
plus nickel.
Mechanical Properties
| Tensile strength, min, ksiA (MPa) |
Yield strength,B min, ksiA (MPa) |
Elongation in 2 in. or 50 mm, min, % |
| 30 (205) |
14 (95) |
20 |
Note A: ksi = 1000 psi.
Note B: Yield strength shall be determined as the stress producing an
elongation under load of 0.5 %; that is, 0.01 in. (0.25 mm) in a
gage length of 2 in. (51 mm).