CuSn7Zn4Pb7-C (CC493K) vs CuBe2: 5% composition overlap. Significantly different materials serving different application areas.
CuSn7Zn4Pb7-C (CC493K) vs CuBe2
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.
CuBe2
CW101C
THE highest-strength copper alloy — UTS up to 1400 MPa (200 ksi), approaching steel strength with copper's conductivity (22% IACS aged). Age-hardenable: solution treat 780-800°C, age 315-340°C → HRC 38-45. Non-sparking, non-magnetic. Trade names: Alloy 25 (Materion), BeCu25 (NGK). CAUTION: Be dust is carcinogenic — machining requires extraction. Used for non-sparking tools, mold inserts, springs, connectors, and resistance welding electrodes.
| CuSn7Zn4Pb7-C (CC493K) | CuBe2 | |
|---|---|---|
| Material Number | 2.1090 | CW101C |
| Category | Copper & Brass | Copper & Brass |
| Standard | EN 1982 | EN 12163 |
Chemical composition (wt%) — Pro
| Element | CuSn7Zn4Pb7-C (CC493K) | CuBe2 | Overlap |
|---|---|---|---|
| Si | ≤ 0.01% | — | — |
| P | ≤ 0.1% | — | — |
| Ni | ≤ 2% | 0–0.3% | OK |
| Cu | 81–85% | — | — |
| Al | |||
| Sn | |||
| Zn | |||
| Pb | |||
| Fe | |||
| Be | |||
| Co |
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Sign up free — 3 comparisons/day freeMechanical properties — Pro
| Property | CuSn7Zn4Pb7-C (CC493K) | CuBe2 | Unit |
|---|---|---|---|
| Tensile Strength | 230–270 | 440–540 | MPa |
| Yield Strength | 110–130 | — | MPa |
| Elongation | 7–14 | 25–45 | % |
| Hardness HB | |||
| Density | |||
| Hardness HRC | |||
| Elastic Modulus | |||
| Tensile Strength | |||
| Elongation A | |||
| Yield Strength Rp0.2 | |||
| Hardness HRC | |||
| Density | |||
| Electrical Conductivity | |||
| Melting Range |
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Sign up free — 3 comparisons/day freeCompatibility Assessment
CuSn7Zn4Pb7-C (CC493K) and CuBe2 have significantly different compositions (5% 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 CuBe2?
CuSn7Zn4Pb7-C (CC493K) and CuBe2 have a 5% composition overlap. They are generally not directly interchangeable.
Can I replace CuSn7Zn4Pb7-C (CC493K) with CuBe2?
Generally not recommended. The compositions differ significantly (5% overlap). These materials have different alloying concepts and are intended for different applications.
What is the difference between CuSn7Zn4Pb7-C (CC493K) and CuBe2?
The main differences are in the following elements: overall alloying content. CuSn7Zn4Pb7-C (CC493K) is a Copper & Brass grade, while CuBe2 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.