EN 12451 CuZn20AL2 Aluminium Brass Seamless Tubes 76-79% Copper 1.8-2.5% Aluminum for Heat Exchangers
Price:
Negotiable
MOQ:
2Tons
Delivery Time:
20days
Brand:
Joyruns
Product Description
EN 12451 CuZn20AL2 Aluminium Brass Seamless Tubes
Aluminium Brass tubes CuZn20AL2/C68700 offer exceptional resistance to high-velocity salt and brackish water, making them ideal for condenser applications. The primary advantage of CuZn20AL2/C68700 is its superior resistance to impingement attack, recommended for marine and land power stations with high cooling water velocities.
Key Characteristics
- High strength combined with excellent general corrosion resistance
- Low susceptibility to stress corrosion cracking
- Suitable for hard drawn conditions and heat treatment
- Melting Point: 935°C • Density: 8.33 g/cm³
- Hot Working Properties: Excellent • Cold Working Properties: Very Good
International Standards & Chemical Composition
| Element | ASTM B111 C68700 | EN 12451 | DIN 17660/1785 CuZn20Al2As | BS 2871 CuZn20Al2 | JIS H3300 CZ 110 | GB/T8890 C6870 HAL77-2 |
|---|---|---|---|---|---|---|
| Cu | 76.0-79.0 | 76.0-79.0 | 76.0-79.0 | 76.0-78.0 | 76.0-79.0 | 76-79 |
| Al | 1.8-2.5 | 1.8-2.3 | 1.8-2.3 | 1.8-2.3 | 1.8-2.5 | 1.8-2.5 |
| Fe | 0.06 max | 0.07 max | 0.07 max | 0.06 max | 0.06 max | 0.06 max |
| Pb | 0.07 max | 0.05 max | 0.07 max | 0.07 max | 0.07 max | 0.03 max |
| Zn | Bal. | Bal. | Bal. | Bal. | Bal. | Bal. |
| As | 0.02-0.10 | 0.02-0.06 | 0.02-0.035 | 0.02-0.06 | 0.02-0.06 | 0.03-0.06 |
Mechanical Properties
| Property | ASTM B111 C68700 | EN 12451 | DIN 17660/1785 | JIS H3300 |
|---|---|---|---|---|
| Yield Strength (N/mm²) | 125 min | 150 min | 150-230 | - |
| Tensile Strength (N/mm²) | 345 min | 390 min | - | 373 min |
| Elongation (%) | - | 45 min | 45 min | 40 min |
Applications
Most widely used copper alloy for heat exchanger tubes. The optimal choice for heat exchangers handling saline water, with arsenic addition preventing dezincification issues.
Weight Calculation
Average Wall: (OD-WT) × WT × 0.0265 = Kg/m (all sizes in mm)
Minimum Wall: (OD-WT) × WT × 0.0275 = Kg/m (all sizes in mm)
Minimum Wall: (OD-WT) × WT × 0.0275 = Kg/m (all sizes in mm)
Packaging
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Get in Touch
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Company
Changzhou Joyruns Steel Tube CO.,LTD
Location
No.143 Qingyang North road,Tianning district. Changzhou
Contact Person
Lee