CuSn7Zn4Pb7-C (CC493K) vs CuZn36Pb3: 22% composition overlap. Significantly different materials serving different application areas.
CuSn7Zn4Pb7-C (CC493K) vs CuZn36Pb3
Side-by-side chemical composition and mechanical property comparison.
Overview
CuSn7Zn4Pb7-C (CC493K)
2.1090
The world's most common bearing bronze (Rg7). Higher tin (7%) and lead (7%) content than Rg5 provides superior bearing properties, better wear resistance, and improved self-lubrication under boundary lubrication. Good sliding properties even for occasional dry running during acceleration. Standard material per DIN 1850/ISO 4379 for plain bearings. Used for medium-load sliding bearings, bushings, guide bushings, valve seats, and worm gear nuts in general engineering, textile machinery, and agricultural equipment. ASTM: C93200.
CuZn36Pb3
CW603N
Free-cutting leaded brass — the benchmark for non-ferrous machinability (rated 100%). Lead particles act as chip breakers for excellent surface finish. Used for screw machine parts, fittings, valves, watch components, precision mechanics, and electrical connectors. Old DIN number 2.0375.
| CuSn7Zn4Pb7-C (CC493K) | CuZn36Pb3 | |
|---|---|---|
| Material Number | 2.1090 | CW603N |
| Category | Copper & Brass | Copper & Brass |
| Standard | EN 1982 | EN 12164 |
Chemical composition (wt%)
| Element | CuSn7Zn4Pb7-C (CC493K) | CuZn36Pb3 | Overlap |
|---|---|---|---|
| Si | ≤ 0.01% | — | — |
| P | ≤ 0.1% | — | — |
| Ni | ≤ 2% | 0–0.3% | OK |
| Cu | 81–85% | 60–63% | No overlap |
Mechanical properties
| Property | CuSn7Zn4Pb7-C (CC493K) | CuZn36Pb3 | Unit |
|---|---|---|---|
| tensile_strength | 230–270 | ≥ 340 | MPa |
| yield_strength | 110–130 | ≥ 280 | MPa |
| elongation | 7–14 | ≥ 10 | % |
Compatibility Assessment
CuSn7Zn4Pb7-C (CC493K) and CuZn36Pb3 have significantly different compositions (22% overlap). These materials are not interchangeable and serve different application areas.
Automated assessment based on composition analysis
Frequently Asked Questions
Is CuSn7Zn4Pb7-C (CC493K) the same as CuZn36Pb3?
CuSn7Zn4Pb7-C (CC493K) and CuZn36Pb3 have a 22% composition overlap. They are generally not directly interchangeable.
Can I replace CuSn7Zn4Pb7-C (CC493K) with CuZn36Pb3?
Generally not recommended. The compositions differ significantly (22% overlap). These materials have different alloying concepts and are intended for different applications.
What is the difference between CuSn7Zn4Pb7-C (CC493K) and CuZn36Pb3?
The main differences are in the following elements: Cu, Sn, Pb. CuSn7Zn4Pb7-C (CC493K) is a Copper & Brass grade, while CuZn36Pb3 is a Copper & Brass grade.
Related Comparisons
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Data provided for reference only. Always verify against the applicable specification for critical applications.
All data is for reference only. Equivalents indicate similarity, not identity. Always verify against the applicable specification for safety-critical applications. materialref.com accepts no liability for decisions based on this data.