ASTM B111 C70400 Tube – UNS C70400 (Copper Nickel Alloy Tube)
ASTM B111 C70400 Tube, designated as UNS C70400, is a copper-nickel alloy tube manufactured specifically for condenser, heat exchanger, and general engineering applications. ASTM B111 UNS C70400 tubes are known for their good resistance to corrosion, particularly in mildly aggressive water environments, along with stable mechanical properties and excellent heat transfer capability. Produced in seamless form, these tubes ensure uniform wall thickness, dimensional accuracy, and dependable performance under continuous service conditions.
ASTM B111 C70400 tubes are commonly selected for applications where moderate corrosion resistance, long service life, and cost-effective heat transfer solutions are required.
Key Features
- Good resistance to corrosion in fresh and mildly saline water
- Reliable thermal conductivity for efficient heat exchange
- Seamless construction ensuring uniform strength
- Good ductility and ease of fabrication
- Stable mechanical properties under operating conditions
- Low maintenance and long operational life
Equivalent Grades
| Standard | Equivalent Grade |
|---|---|
| UNS | C70400 |
| EN | CuNi Alloy |
| DIN | 2.0840 |
| ISO | Copper Nickel Alloy |
Sizes
- Outside Diameter: 6 mm to 114.3 mm
- Wall Thickness: 0.7 mm to 6 mm
- Length: Up to 6 meters, random or cut lengths available
- Form: Straight tubes and U-bend tubes
ASTM B111 C70400 Chemical Composition
| Element | Percentage (%) |
|---|---|
| Copper (Cu) | Balance |
| Nickel (Ni) | 3.0 – 6.0 |
| Iron (Fe) | Max 0.5 |
| Manganese (Mn) | Max 0.5 |
| Zinc (Zn) | Max 0.5 |
| Lead (Pb) | Max 0.02 |
C70400 Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength | ≥ 310 MPa |
| Yield Strength | ≥ 105 MPa |
| Elongation | ≥ 30% |
| Hardness | ≤ 80 HRB |
UNS C70400 Physical Properties
| Property | Value |
|---|---|
| Density | 8.90 g/cm³ |
| Melting Point | ~1080°C |
| Thermal Conductivity | ~55 W/m·K |
| Electrical Conductivity | ~6% IACS |
Type of C70400 Pipe & Tube
- C70400 Seamless Tubes
- C70400 U-Bend Tubes
- Condenser Tubes
- Heat Exchanger Tubes
Applications
- Condensers,
- Heat exchangers,
- Power plants,
- HVAC systems,
- Shipbuilding,
- Desalination units
- Industrial cooling systems
Reviews
There are no reviews yet.