C51000 Phosphor Bronze (5% Sn): Hoch-Fatigue Spring Alloy
ASTM B103 · Published: 2026-06-03 · Updated: July 2026
C51000 Phosphor Bronze (5% tin, 0.2% phosphorus) offers an exceptional combination of high fatigue strength, excellent spring properties, and good corrosion resistance. It is the standard material for electrical switch contacts, relay springs,...
C51000 Phosphor Bronze (5% tin, 0.2% phosphorus) offers ein exceptional combination von hoch fatigue strength, excellent spring properties, und gut corrosion widerstand. Es ist der standard material für electrical schalter contacts, relais springs, bellows, und flexible metal schlauch. Der phosphorus addition acts als ein deoxidizer und improves wear widerstand.
Quick Facts
| Kategorie | Brass & Bronze |
| Norm | ASTM B103 |
| Density | 8.86 g/cm³ |
| Yield Strength | 130-550 MPa |
| Tensile Strength | 340-690 MPa |
Global Equivalents & Cross-Reference
| Alternative Standard / Grade | Action |
|---|---|
| CuSn5 | Compare |
| EN CW451K | Compare |
| JIS C5102 | Compare |
| GB QSn5-0.2 | Compare |
Verwandt Materials
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Frequently Asked Questions
Wie tut phosphor bronze compare zu beryllium copper für springs?
Beryllium copper (C17200) hat higher strength und better electrical conductivity but costs 5-10× mehr und requires special handling due zu beryllium's toxicity. C51000 phosphor bronze ist der economical choice für meiste spring und contact applications wo extreme conductivity ist nicht erforderlich.
References & International Standards
- ASTM International. Norm Specifications für Stahl & Metal Alloys. astm.org
- International Organization für Standardization (ISO). Metallic Materials — Cross-Referenz Database. iso.org
- American Iron und Stahl Institute (AISI). Stahl Güte Designations & Equivalents. steel.org
- European Committee für Standardization (CEN). EN Stahl Standards & Numbering System. cencenelec.eu