Copper–Nickel Master Alloy, 7440‑50‑8, 7440‑02‑0

COPPER-NICKEL MASTER ALLOY 

1. PRODUCT IDENTIFICATION AND CHEMICAL IDENTITY

CAS Number Information

2. CHEMICAL STRUCTURE

2.1. Molecular Structure

Copper-Nickel master alloy is a solid solution of copper (Cu) and nickel (Ni). Copper and nickel are completely miscible in both liquid and solid states, forming a continuous series of solid solutions with a face-centered cubic (FCC) crystal structure. The alloy consists of a homogeneous Cu-Ni solid solution matrix with no significant intermetallic phases.

Crystal Structure:

                    CuNi MASTER ALLOY
                               |
                 Cu-Ni Solid Solution
                 (FCC Crystal Structure)
                               |
             +----------------+----------------+
             |                |                |
         Cu-rich Solid     Ni-rich Solid     Homogeneous
         Solution          Solution          Distribution

2.2. Phase Structure and Crystallographic Properties

2.3. Crystal Structure Details

3. CHEMICAL COMPOSITION

Unless otherwise stated, values are in % by weight. Exact composition may vary slightly by production batch.

Note: Impurity levels are minimized through rigorous production and high-purity raw materials.

4. PHYSICAL PROPERTIES

¹ Typical values for reference; master alloy is not recommended for direct use as a conductor.

5. MECHANICAL PROPERTIES

Master alloy ingots are produced for remelting and alloying purposes and are not suitable for structural load-bearing applications. However, based on typical cast structure:

Note: These characteristics do not prevent the alloy from dissolving easily and distributing homogeneously in liquid metal.

6. APPLICATION AREAS

Copper-Nickel master alloy is used for controlled and homogeneous nickel addition in the following groups:

7. ADVANTAGES

8. MELTING AND HANDLING RECOMMENDATIONS

Storage:

• Store in a dry, enclosed area

• Store ingots on pallets, avoiding direct floor contact

• Keep in original packaging to prevent surface oxidation from moisture and condensation

Melting Recommendations:

9. PACKAGING

10. SAFETY INFORMATION

This product is considered non-hazardous in solid form and under normal transport/storage conditions. Not classified under Regulation 1272/2008/EC (CLP).

Precautions During Melting:

First Aid:

Always comply with local occupational health and safety regulations.

11. QUALITY CONTROL

12. REGULATORY COMPLIANCE

13. QUICK REFERENCE TABLE

14. CRITICAL NOTICES AND BEST PRACTICES

CRITICAL NOTICES:

1. Nickel Content: Two grades available: CuNi30 and CuNi50. Choose appropriate grade for the desired nickel content in the final alloy.

2. Melting Temperature: Melting ranges are grade-specific. Ensure appropriate temperature control during melting.

3. Solid Solution System: Cu and Ni form a continuous solid solution with complete miscibility. No intermetallic phases are present.

4. Corrosion Resistance: Nickel addition improves corrosion resistance, especially in marine environments.

5. Not Hazardous: Not classified as hazardous in solid form. However, melting operations require appropriate safety measures.

6. Environmental Protection: Dispose of waste in accordance with local regulations.

BEST PRACTICE RECOMMENDATIONS:

Storage:

• Store in a dry, enclosed area on pallets

• Keep in original packaging to prevent oxidation

• No special temperature control required

• No shelf life limitation under proper conditions

Handling:

• Use protective gloves, safety shoes, and safety goggles

• Use appropriate lifting equipment for pallets

Melting:

• Preheat ingots to 100–150 °C before addition

• Maintain bath temperature 100–200 °C above liquidus

• Apply stirring for homogeneity

• Use protective cover (charcoal, graphite) to reduce oxidation

• Expected nickel recovery >95%

Waste Management:

• Do not discharge into sewers or water bodies

• Dispose in accordance with local regulations

LEGAL DISCLAIMER

The values presented in this Technical Data Sheet are typical values compiled from current production data and do not constitute a specification guarantee. Performance testing for specific applications is the responsibility of the user. The manufacturer is not liable for damages resulting from improper use of the product or misinterpretation of the data. For complete safety, storage, handling, transport, waste, and regulatory compliance information, the official Safety Data Sheet (SDS/MSDS) provided by the manufacturer/supplier must be consulted. This document does not substitute professional advice.