CuSn5Zn5Pb5-C (CC491K) vs CuCr1Zr (CW106C): 0% composition overlap. Significantly different materials serving different application areas.
CuSn5Zn5Pb5-C (CC491K) vs CuCr1Zr (CW106C)
Side-by-side chemical composition and mechanical property comparison.
Overview
CuSn5Zn5Pb5-C (CC491K)
2.1096
Classic leaded gunmetal (Rotguss Rg5) — the universal copper casting alloy for bearings and fittings. 5% Sn + 5% Zn + 5% Pb provides good machinability, moderate strength, excellent corrosion resistance in fresh and sea water, and self-lubricating properties from lead phase. Used for plain bearings under low/medium loads, valve bodies, pump housings, pipe fittings, and general marine hardware. The economic workhorse of the bronze foundry. ASTM: C83600 (SAE 40), BS: LG2.
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.
| CuSn5Zn5Pb5-C (CC491K) | CuCr1Zr (CW106C) | |
|---|---|---|
| Material Number | 2.1096 | CW106C |
| Category | Copper & Brass | Copper & Brass |
| Standard | EN 1982 | EN 12163 / CEN/TS 13388 |
Chemical composition (wt%)
| Element | CuSn5Zn5Pb5-C (CC491K) | CuCr1Zr (CW106C) | Overlap |
|---|---|---|---|
| Si | ≤ 0.01% | — | — |
| P | ≤ 0.1% | — | — |
| Cr | — | 0.5–1.2% | — |
| Ni | ≤ 2% | — | — |
Mechanical properties
| Property | CuSn5Zn5Pb5-C (CC491K) | CuCr1Zr (CW106C) | Unit |
|---|---|---|---|
| tensile_strength | 200–250 | 440–540 | MPa |
| yield_strength | 90–110 | 380–480 | MPa |
| elongation | 6–13 | 8–15 | % |
Compatibility Assessment
CuSn5Zn5Pb5-C (CC491K) 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 CuSn5Zn5Pb5-C (CC491K) the same as CuCr1Zr (CW106C)?
CuSn5Zn5Pb5-C (CC491K) and CuCr1Zr (CW106C) have a 0% composition overlap. They are generally not directly interchangeable.
Can I replace CuSn5Zn5Pb5-C (CC491K) 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 CuSn5Zn5Pb5-C (CC491K) and CuCr1Zr (CW106C)?
The main differences are in the following elements: Cu. CuSn5Zn5Pb5-C (CC491K) 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.