Global Certificate
ISO 9001 : 2015
| Alloy Name | |
| AMW - 32 | CuSn5 |
| IS/ISO | CuSn5 |
| DIN CEN/TS 13388 | CW451K |
| UNS | C51000 |
| JIS | C5102 |
| This alloy is as per ROHS specification | |
KEI Produces highest quality bronze strips in a thickness range from 0.1 mm to 3 mm in a slit width of 10 mm to 400 mm for Connectors , Electrical contacts , Spring elements & switches.
CuSn5 provides an excellent combination of strength, excellent formability and hardness. It has a good electrical conductivity and corrosion resistance. Soldering and brazing properties are excellent. Special characteristics such as superfine particle size or thermal- mechanical stress relieving improve mechanical properties and provide increased strength and greater malleability.
| Chemical Composition | Weight percentage |
| p | 0.03 - 0.35 % |
| Sn | 4.5 - 5.5 % |
| Pb | 0.02 Max % |
| Zn | 0.30 Max % |
| Fe | 0.10 Max % |
| Cu | Remainder % |
| Main Applications |
| Electrical : Miniaturized Connectors,Contact Springs,Relais Springs,Terminals,Switch Parts,fuse Clips,Electronic Connectors,Resistance Wire,Wire Brushes. |
| Fasteners : Lock Washers,Cotter pins,Fasteners. |
| Industrial : Bellows,Textile Machinery,perforated sheets,Springs,Sleeve Bushing,Clutch Disks. |
| Physical Properties Typical values in annealed temper at 20 °C | ||
| Density | 8.85 | g/cm3 |
| Thermal expansion coefficient -191 .. 16 | 17.8 | 10-6/K |
| Specific heat capacity - 0 .. 300°C | 18.1 | 10-6/K |
| Thermal conductivity | 0.377 | J/(g•K) |
| Electrical conductivity (1 MS/m = 1 m/(O mm²) | 96 | W/(m•K) |
| Electrical conductivity (IACS) | 17.2 | MS/m % |
| Thermal coefficient of electrical resistance (0 .. 200 C) | 0.10 | 10-3/K |
| Modulus of elasticity ( 1 GPa = 1 kN/mm²) cold formed | 120 | GPA |
| Mechanical Properties (EN 1652) | ||||
| Temper | Tensile Strength Rm MPa(N/mm2) |
Yield Strength Rp0.2 MPa(N/mm2) |
Elongation A50mm % |
Hardness HV |
| O (SOFT) | 310 Min | 250 | 45 Min | 85 Max |
| HA (Quater Hard) | 350 Min | 300 | 35 Min | 110 Min |
| HB (Half Hard) | 495 Min | 400 | 10 Min | 160 Min |
| HD (Hard) | 570 Min | 500 | 4 Min | 180 Min |
| HE (Extra Hard) | 645 Min | 550 | 2 Min | 200 Min |
| HS (spring Hard) | 690 Min | 215 Min | ||