| ASTM-UNS No. | Wieland Designation | EN Designation | EN No. | JIS No. | Data Sheet | ||
|---|---|---|---|---|---|---|---|
| C51100 | B14 | CuSn4 | CW450K | - | download | ||
| C51000 | B15 | CuSn5 | CW451K | - | download | ||
| C51900 | B16 | CuSn6 | CW452K | - | download | ||
| C52100 | B18 | CuSn8 | CW453K | C5212 | download | ||
| C50715 | B31 | CuSn2Fe0,1P* | - | - | download | ||
| C51100 | B14 Supralloy | CuSn4 | CW450K | - | - | ||
| C51900 | B16 Supralloy | CuSn6 | CW452K | - | - | ||
| C52100 | B18 Supralloy | CuSn8 | CW453K | C5212 | - |
Phosphor bronzes are copper-tin alloys prized for their balance of strength, formability, and moderate thermal-relaxation resistance (up to approx. 100°C service temperature). Wieland’s SUPRALLOY® fine-grain versions of B14 (CuSn4), B16 (CuSn6), and B18 (CuSn8) share the same UNS numbers as the standard bronzes but have a finegrain microstructure, giving it a higher strength at comparable formability, plus significantly higher fatigue and vibration resistance.
Need help selecting the right alloy? Use our Alloy Wizard to compare materials and identify the best option for your application.
| Strip thickness | 0.10–1.50 mm (thicker gauges on request) |
| Strip width | standard up to 200 mm per EN 1652 (wider on request) |
Spring connectors, press-fit connectors, and other contacts for signal transmission. Fine-grain SUPRALLOY® variants target applications with cyclic loading or vibration exposure.
