CuSn7Zn4Pb7-C / EN 1982
CuSn7Zn4Pb7-C
EN 1982
General
RG7 (CC 493K) IS A WIDELY USED TIN BRONZE ALLOY KNOWN FOR ITS EXCELLENT ALL-ROUND PROPERTIES. IT OFFERS GOOD DRY-RUNNING PERFORMANCE, PRESSURE-TIGHTNESS, AND IS EASY TO MACHINE. COMMONLY USED FOR SLIDE BEARINGS AND BUSHINGS, RG7 ALSO PROVIDES ADEQUATE CORROSION RESISTANCE, INCLUDING IN SALTWATER ENVIRONMENTS. THE ALLOY IS SOFT SOLDERABLE, THOUGH HARD SOLDERING IS LIMITED.
Uses
SLIDE BEARINGS, SLIDING PARTS, BEARING BUSHES, STEAM FITTINGS, VALVE AND PUMP HOUSINGS
Heat Treatment & Condition
CONDITION A
Chemical Analysis
Cu
·
81.0/86.0
Sn
·
5.2/8.0
Pb
·
5.0/8.0
Zn
·
2.0/5.0
Ni
·
2.0
| Cu | Sn | Pb | Zn | Ni |
|---|---|---|---|---|
| 81.0/86.0 | 5.2/8.0 | 5.0/8.0 | 2.0/5.0 | 2.0 |
Typical Mechanical Properties (EXAMPLE ONLY)
TEN. STRENTH
260 MPa
YEILD STRENGTH
120 MPa
ELONG.
12%
HARDNESS
70 HB
| TEN. STRENTH | YEILD STRENGTH | ELONG. | HARDNESS |
|---|---|---|---|
| 260 MPa | 120 MPa | 12% | 70 HB |