LEADING COPPER NICKEL 90/10 & 70/30 PIPES, TUBES & CUNIFER BRAKE LINE COIL MANUFACTURER
Manufacturer, Exporter & Supplier of Copper-Nickel 90/10 & 70/30 Pipes, Tubes & CuNiFer Brake Line Coils
Corrosion-resistant CuNiFer (Copper-Nickel-Iron) brake & fuel line coils manufactured by Sunflex Metalloy for automotive, commercial vehicle, trailer and military vehicle applications — conforming to SAE J527, ISO 4038 and DIN 1785.
CuNiFer (Copper-Nickel-Iron, also known as 90/10 CuNiFe) brake line tubing is the industry-preferred alternative to traditional steel and copper brake lines, offering outstanding resistance to corrosion, road salt, brake fluid attack and vibration fatigue. Sunflex Metalloy manufactures CuNiFer brake line coils for OEM and aftermarket automotive brake systems, fuel lines, transmission oil cooler lines and hydraulic clutch lines.
CuNiFer tubing combines the corrosion resistance of Copper-Nickel alloy with the strength and double-flaring/bending characteristics required for automotive hydraulic brake systems, making it ideal for passenger cars, commercial trucks, trailers, buses, agricultural equipment and military vehicles operating in corrosive or coastal environments.
Alloy Type: 90/10 CuNiFe (Copper-Nickel-Iron)
Form: Coiled Seamless Tube
OD Range: 4.75mm – 12mm (3/16" – 1/2")
Wall Thickness: 0.5mm – 1.0mm typical
Primary Standards: SAE J527, ISO 4038, DIN 1785
Coil Length: 7.5m, 15m, 30m or custom
Request Quote| Element | Composition (%) |
|---|---|
| Copper (Cu) | Remainder (approx. 88%) |
| Nickel (Ni) | 9.0 – 11.0 |
| Iron (Fe) | 1.0 – 1.8 |
| Manganese (Mn) | 0.5 – 1.2 |
| Lead (Pb) | 0.05 max |
| Property | Typical Value |
|---|---|
| Tensile Strength | 320 – 400 MPa |
| Yield Strength | 140 – 200 MPa |
| Elongation | 20 – 30% |
| Burst Pressure (typical 4.75mm OD x 0.71mm WT) | > 400 bar |
| Operating Temperature Range | -40°C to +150°C |
| Density | 8.94 g/cm³ |
| OD (mm / inch) | Wall Thickness | Standard Coil Lengths |
|---|---|---|
| 4.75mm (3/16") | 0.5 – 0.71mm | 7.5m / 15m / 30m |
| 6.00mm (1/4") | 0.5 – 0.8mm | 7.5m / 15m / 30m |
| 8.00mm (5/16") | 0.6 – 0.9mm | 7.5m / 15m / 30m |
| 10.00mm (3/8") | 0.7 – 1.0mm | 7.5m / 15m / 30m |
| 12.00mm (1/2") | 0.8 – 1.0mm | 7.5m / 15m / 30m |
CuNiFer (Copper-Nickel-Iron) brake line tubing is made from a 90/10 CuNiFe alloy — nominally 88% copper, 10% nickel, with controlled iron and manganese additions for strength and corrosion resistance.
Yes. CuNiFer does not rust, resists road salt and brake fluid corrosion far better than steel, and is easier to bend and double-flare during installation, while meeting the same pressure and performance requirements per SAE J527.
We supply CuNiFer brake line coils from 4.75mm (3/16") to 12mm (1/2") OD, in standard coil lengths of 7.5m, 15m and 30m, or custom lengths on request.
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