| Alloy Name | |||||||||||||||||||||||
| AMW34 | IS/ISO | DIN CEN/TS 13388 | UNS | JIS | KMW | ||||||||||||||||||
| CuSn8 | CuSn8 | CW453K | C52100 | C5210 | CuSn8 | ||||||||||||||||||
| Chemical Composition | (% By Weight) |
| P | 0.02 0.40% |
| Sn | 7.5-9.0% |
| Pb | 0.02 Max % |
| Zn | 0.3 Max% |
| Fe | 0.10 Max % |
| Cu | Reminder % |
| Main Applications | |
| Electrical | Contact Springs, Electronic Connectors, Electrical Connectors, Cold Headed Parts, Contact Blades, Wire Brushes, Switch Parts, Fuse Clips |
| Fasteners | Cotter Pins, Heavy duty, Lock Washers |
| Industrial | Cold Headed Parts, Thrust Bearings, Doctor Blades, Paper Industry, Bourdon Tubing, Well Drill Equipment, Perforated Sheets |
| Physical Properties Typical values in annealed temper at 20°C | ||
| Density | 8.8 | g/cm3 |
| Thermal expansion coefficient −191 .. 16 / - 0 .. 300°C | 18.0/18.7 | 10-6/K/10-6/K |
| Specific heat capacity | 0.377 | J/(g.K) |
| Thermal conductivity | 67 | W/(m.k) |
| Electrical conductivity (1 MS/m = 1m/(0 mm2)) | >= 6.5 | MS/M |
| Electrical conductivity (IACS) | >=11 | % |
| Thermal coefficient of electrical resistance (0 .. 200 C) | 0.65 | 10-3/K |
| Modulus of elasticity (1GPa = 1 kN/mm2) cold formed | 109/115 | GPa / Gpa |
| Mechanical Properties (EN 1652) | ||||
| Temper | Tensile Strength Rm MPa (N/mm2) |
Yield Strength Rp0.2 MPa (N/mm2) |
Elongation Minimum A50mm % | Hardness HV |
| O (SOFT) | 345 Min | ≤ 300 | 50 Min | 100 Max |
| HA (Quater Hard) | 405 Min | ≥ 350 | 40 Min | 125 Min |
| HB (Half Hard) | 475 Min | ≥ 400 | 15 Min | 175 Min |
| HD (Hard) | 585 Min | ≥ 500 | 5 Min | 200 Min |
| HE (Extra Hard) | 670 Min | ≥ 600 | 2 Min | 220 Min |
| HS (Spring Hard) | 720 Min | ≥ 700 | 240 Max | |
Cold formability
Hot formability
Soldering
Brazing
Oxyacetylene welding
Gas shielded arc welding
Excellent
Not Recommended
Excellent
Excellent
Fair
Good