Applications
nuts/bolts, shafts, valve seats, gears, cams, tube sheets for condensers and desalination units.
MATERIALJM7-20Bronze
BRONZEC63000
MATERIAL DATASHEET
JM7-20 (CuAl10Ni5Fe4)
Wrought nickel aluminium bronze (~10% Al, ~5% Ni, 3–5% Fe); high strength with very good seawater and erosion resistance.
Condition reported here: R680 (others available: R740, H170, H200).
Standards & designations
| Designation | Reference |
|---|---|
| EN | EN 12163: CW307G (wrought) |
| UNS | C63000 |
| Old BS | BS 2872/2874 CA104 |
| DIN (old) | DIN 17665 CuAl10Ni5Fe4 |
Mechanical & physical properties
| Property | Value / condition |
|---|---|
| Condition | R680 (wrought) |
| Yield strength Rp0.2 | ≥ 320 MPa |
| Tensile strength Rm | ≥ 680 MPa |
| Elongation A5 | ≥ 10 % |
| Hardness HBW | ≥ 170 |
| Density | 7.6 g/cm³ (typ.) |
| Young’s modulus | ~115 GPa (typ.) |
| Thermal conductivity | ~38 W/m·K (typ.) |
| Electrical conductivity | ~9 % IACS (typ.) |
Chemical composition
Weight %
| Element | Al | Cu | Fe | Mn | Ni | Pb | Si | Sn | Zn | Others |
|---|---|---|---|---|---|---|---|---|---|---|
| Min | 8.5 | Rem. | 3.0 | – | 4.0 | – | – | – | – | – |
| Max | 11.0 | – | 5.0 | 1.0 | 6.0 | 0.05 | 0.2 | 0.1 | 0.4 | 0.2 |
Applications & processing
Heat treatment
stress-relief ~315 °C typical.
Weldability
Good, soldering not recommended.
The information in this datasheet is provided for guidance only. Intermec AS does not guarantee the accuracy or completeness of the data. Users must verify suitability for their specific applications.