CuSn7Zn4Pb7-C (CC493K) vs CuCr1Zr (CW106C): 0% composition overlap. Significantly different materials serving different application areas.
CuSn7Zn4Pb7-C (CC493K) vs CuCr1Zr (CW106C)
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.
CuCr1Zr (CW106C)
CW106C
Chromium-zirconium copper alloy, precipitation hardened. High electrical/thermal conductivity (~80% IACS) with significantly higher strength and hardness than pure copper. Age-hardened: Rm 440–540 MPa, Rp0.2 380–480 MPa, HB 130–170. Softening temperature ~500°C. UNS C18150, EN CW106C. Applications: resistance welding electrodes and caps, continuous casting molds, circuit breaker contacts, lead frames, MIG welding tips. THE standard electrode material.
| CuSn7Zn4Pb7-C (CC493K) | CuCr1Zr (CW106C) | |
|---|---|---|
| Material Number | 2.1090 | CW106C |
| Category | Copper & Brass | Copper & Brass |
| Standard | EN 1982 | EN 12163 / CEN/TS 13388 |
Chemical composition (wt%)
| Element | CuSn7Zn4Pb7-C (CC493K) | CuCr1Zr (CW106C) | Overlap |
|---|---|---|---|
| Si | ≤ 0.01% | — | — |
| P | ≤ 0.1% | — | — |
| Cr | — | 0.5–1.2% | — |
| Ni | ≤ 2% | — | — |
Mechanical properties
| Property | CuSn7Zn4Pb7-C (CC493K) | CuCr1Zr (CW106C) | Unit |
|---|---|---|---|
| tensile_strength | 230–270 | 440–540 | MPa |
| yield_strength | 110–130 | 380–480 | MPa |
| elongation | 7–14 | 8–15 | % |
Compatibility Assessment
CuSn7Zn4Pb7-C (CC493K) and CuCr1Zr (CW106C) have significantly different compositions (0% 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 CuCr1Zr (CW106C)?
CuSn7Zn4Pb7-C (CC493K) and CuCr1Zr (CW106C) have a 0% composition overlap. They are generally not directly interchangeable.
Can I replace CuSn7Zn4Pb7-C (CC493K) with CuCr1Zr (CW106C)?
Generally not recommended. The compositions differ significantly (0% overlap). These materials have different alloying concepts and are intended for different applications.
What is the difference between CuSn7Zn4Pb7-C (CC493K) and CuCr1Zr (CW106C)?
The main differences are in the following elements: Cu. CuSn7Zn4Pb7-C (CC493K) is a Copper & Brass grade, while CuCr1Zr (CW106C) is a Copper & Brass grade.
View full data for each material:
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.