C51000, C51900 and C52100 belong to the same family of wrought tin-phosphorus bronzes. They are close in appearance but differ in tin content, which in turn affects strength, wear resistance and forming behaviour.
Side-by-side view
- Nominal tin: C51000 about 5%, C51900 about 6%, C52100 about 8%.
- Formability: highest for C51000, lowest for C52100.
- Wear and hardness: increase as tin increases.
- Typical uses: C51000 springs and contacts; C51900 bushings and fasteners; C52100 heavy-duty springs and wear parts.
What to check before you choose
Verify the specification, temper and product form for each grade, since coverage differs between standards. Do not assume published values for one grade apply to another. If a part must be formed after hardening, a lower-tin grade is usually the safer starting point.
Getting a quotation
Send grade, form, dimensions, quantity and any certificate requirements. Availability and sizes are confirmed with the company for each request.
General information only. Verify grades, properties and specifications against the current standards and your project requirements before relying on this article.