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Specification of Copper Bimetal Strip Coil:1. Chemical Composition
| Copper Bimetal Strip Coil | Chemical Composition (%) | Hardness(HB) | Hardness When Flanged(HB) | ||||
| Cu | Pb | Sn | Zn | P | |||
| CuPb30 | Remaining | 26-33 | 0.5 | - | - | ≥30 | 25-40 |
| CuPb24Sn | Remaining | 19-27 | 0.5-2.0 | - | - | ≥45 | 25-40 |
| CuPb23Sn3 | Remaining | 21-27 | 2.0-4.0 | - | - | ≥45 | 25-40 |
| CuPb24Sn4 | Remaining | 22-27 | 3.0-5.0 | - | - | ≥45 | 25-40 |
| CuPb25Sn5 | Remaining | 23-27 | 4.0-6.0 | - | - | ≥45 | 25-40 |
| CuPb10Sn10 | Remaining | 9.0-11.0 | 9.0-11.0 | - | - | ≥55 | - |
| CuPbSn7Zn3 | Remaining | 6.0-8.0 | 6.0-8.0 | 2.0-4.0 | - | ≥55 | - |
| CuPb3Sn6Zn6 | Remaining | 2.0-4.0 | 5.0-7.0 | 5.0-7.0 | - | ≥55 | - |
| CuSn6.5PO.1 | Remaining | - | 6.0-7.0 | - | 0.10-0.25 | ≥60 | - |
2. Steel back: adopt 08AL, 10#, 15#, 20#3. Surface roughness of steel back: Ra≤0.63um4. Allowable deviation: thickness of steel back, ±0.04mm, total: ±0.03mm5. Standard: ZBT12003-876. The copper lead alloy layer and the steel back must be combined very firmly. The copper lead alloy layer will not separate from the steel back when curved 180° degree (when total thickness ≤3mm)7. The relative density of copper lead alloy layer must not be less than 98%, so that it can meet the requirement of galvanization of dual or three elements soft metal. The galvanization player does not appear each pit and spot. - See more at: http://www.smcbrand.com/Copper_Bimetal_Strip_Coil--pds572.html#sthash.kApDYGv6.dpuf Specification of Copper Bimetal Strip Coil:1. Chemical Composition
| Copper Bimetal Strip Coil | Chemical Composition (%) | Hardness(HB) | Hardness When Flanged(HB) | ||||
| Cu | Pb | Sn | Zn | P | |||
| CuPb30 | Remaining | 26-33 | 0.5 | - | - | ≥30 | 25-40 |
| CuPb24Sn | Remaining | 19-27 | 0.5-2.0 | - | - | ≥45 | 25-40 |
| CuPb23Sn3 | Remaining | 21-27 | 2.0-4.0 | - | - | ≥45 | 25-40 |
| CuPb24Sn4 | Remaining | 22-27 | 3.0-5.0 | - | - | ≥45 | 25-40 |
| CuPb25Sn5 | Remaining | 23-27 | 4.0-6.0 | - | - | ≥45 | 25-40 |
| CuPb10Sn10 | Remaining | 9.0-11.0 | 9.0-11.0 | - | - | ≥55 | - |
| CuPbSn7Zn3 | Remaining | 6.0-8.0 | 6.0-8.0 | 2.0-4.0 | - | ≥55 | - |
| CuPb3Sn6Zn6 | Remaining | 2.0-4.0 | 5.0-7.0 | 5.0-7.0 | - | ≥55 | - |
| CuSn6.5PO.1 | Remaining | - | 6.0-7.0 | - | 0.10-0.25 | ≥60 | - |
2. Steel back: adopt 08AL, 10#, 15#, 20#3. Surface roughness of steel back: Ra≤0.63um4. Allowable deviation: thickness of steel back, ±0.04mm, total: ±0.03mm5. Standard: ZBT12003-876. The copper lead alloy layer and the steel back must be combined very firmly. The copper lead alloy layer will not separate from the steel back when curved 180° degree (when total thickness ≤3mm)7. The relative density of copper lead alloy layer must not be less than 98%, so that it can meet the requirement of galvanization of dual or three elements soft metal. The galvanization player does not appear each pit and spot.
Manufacturing of Copper Bimetal Strip Coil:
Application of Copper Bimetal Strip Coil:For various engines of automobile and engineering machines,- Engine bearing- Bushing- Thrust Washers