CuNi10Fe1Mn Copper

Designation

• Name: Iron-Manganese Cupronickel CuNi10Fe1Mn

• International Designation: CW354H (European Standard), C70600 (US), DIN 2.0872

• Standards: DIN 17664, EN 12163, ISO 1634.

Key Features

1. Corrosion Resistance: Excellent in seawater, salt spray, and weak acids.

2. High Strength & Toughness: Enhanced by Fe and Mn, suitable for cold/hot forming.

3. Anti-Biofouling: Smooth surface reduces marine organism adhesion.

4. Conductivity: Moderate electrical/thermal conductivity for industrial use.

5. Weldability: Compatible with TIG, laser welding, and brazing.

Common Forms & Dimensions

Form	Dimensions
Round Bar	Diameter: Φ5.0mm–300mm
Plate	Thickness: 0.5–100mm
Tube	Seamless tubes per EN 12449 (Wall ≤15mm)
Wire	Diameter: 0.5mm–6.0mm
Forged Parts	Custom shapes (e.g., flanges, valve parts)
Note: Confirm feasibility for non-standard sizes.

Chemical Composition (wt%)

Element	Cu	Ni	Fe	Mn	Pb	Impurities
Range	84–88	9–11	0.8–1.2	0.5–1.0	≤0.05	≤0.3
Data based on DIN 17664.

Physical Properties

Property	Value/Description
Density	8.8 g/cm³
Thermal Conductivity	40 W/m·K (at 20°C)
Electrical Resistivity	0.25 μΩ·m (at 20°C)
Conductivity	~30% IACS
Magnetism	Slightly magnetic (Fe influence)

Mechanical Properties

Property	Range/Typical Value
Tensile Strength (Rm)	400–550 MPa (varies by temper)
Yield Strength (Rp0.2)	180–320 MPa
Elongation (A)	25–40%
Brinell Hardness (HB)	100–160
Note: Hard temper (H) offers higher tensile strength.

Core Advantages

• Marine Adaptability: Superior seawater corrosion resistance.

• Balanced Performance: Combines strength, ductility, and processability.

• Eco-Friendly: ROHS-compliant, lead-free options available.

Applications

• Marine Engineering: Seawater pumps, ship condensers, submarine cable sheaths.

• Chemical Industry: Acid-resistant pipelines, heat exchanger plates.

• Power Systems: Medium-voltage terminals, grounding components.

• Automotive: Corrosion-resistant bolts, radiator brackets.

Processing Guidelines

1. Cold Working: Limit deformation to ≤20% per pass; anneal at 600–700°C.

2. Welding: Use TIG welding with inert gas shielding.

3. Machining: High-speed steel tools with coolant.

4. Surface Treatment: Tin or nickel plating for corrosion resistance.

Key Application Scenarios

• Desalination Plants: Chloride-resistant heat transfer tubes.

• Shipbuilding: Salt spray-resistant valve components.

• Power Transmission: Medium-voltage electrical connectors.

FAQs

Q1: How does CuNi10Fe1Mn differ from B10 cupronickel?

A: B10 lacks Fe/Mn, offering lower strength and corrosion resistance.

Q2: Suitable for sulfur-rich environments?

A: Not recommended for long-term exposure to high-sulfur media.

Q3: How to avoid oxidation during processing?

A: Use inert gas shielding in welding and anti-oxidant coolants in machining.

Standards Reference

• DIN 17664: Cupronickel chemical and mechanical standards.

• EN 12163: Rod processing specifications.

• ISO 1634: Corrosion resistance testing methods.