Copper Manganese (CuMn) Master Alloys
High-Performance Copper Based Master Alloys
Our Copper-Manganese (often referred to as Manganese Copper) master alloys are engineered for precision applications in the foundry and alloying industries. Primarily utilised as a critical additive in the production of high-tensile brasses and complex aluminium bronzes, these alloys ensure superior metallurgical control and enhanced material properties.
Metallurgical Enhancer
Essential for the production of high-tensile brass and complex aluminium bronzes.
Deoxidation
Highly effective for the deoxidation and desulphurisation of CuNi alloys.
Waffle Plate Format
Copper Manganese Master Alloys is supplied in 12 – 18 kg unit weight waffle plates for easy handling and addition.
Technical Specifications of Master Alloys (Weight %)
| Master Alloy | Mn | Pb max. | Sn max. | Fe max. | Ni max. | Zn max. | Si max. | Total Imp. |
|---|---|---|---|---|---|---|---|---|
| CuMn30 High Purity | 29.0 – 31.0 | 0.05 | 0.05 | 0.20 | 0.20 | 0.20 | 0.05 | 0.50 |
| CuMn30 ECO-grade | 28.0 – 32.0 | 0.10 | 0.10 | 0.40 | 0.25 | 0.25 | 0.10 | 0.70 |
| CuMn50 High Purity | 48.0 – 52.0 | 0.05 | 0.05 | 0.25 | 0.20 | 0.20 | 0.10 | 0.50 |
| CuMn50 ECO-grade | 48.0 – 52.0 | 0.10 | 0.10 | 0.40 | 0.25 | 0.25 | 0.20 | 0.70 |
*Other compositions and packaging available upon request. Subject to change without notification.
In compliance with UK Standard: BS EN 1981:2003
Copper Manganese (CuMn) Master Technical Properties
The CuMn30 variant features a melting point of 890 °C and a density of approximately 7.5 g/cm³. For optimal results, we recommend removing all dross from the bath surface before adding the master alloy at normal operating temperatures. Ensure the bath is stirred well to achieve a complete and homogeneous dissolution.
Frequently Asked Questions
How should CuMn Master Alloys be stored? +
To prevent excessive oxidation and maintain material integrity, the alloy must be stored in a dry, climate-controlled area.
What are the primary benefits of using CuMn? +
Beyond alloying, it acts as a powerful deoxidising and desulphurising agent specifically for Copper-Nickel (CuNi) alloy systems.
Is custom packaging available? +
Yes. While standard delivery is on wooden pallets with batch-specific labelling, other compositions and packaging configurations are available upon request.
How do you add Copper-Manganese to a melt? +
For best results, remove all dross from the bath surface and add the waffle plates at normal operating temperatures, stirring thoroughly to ensure homogeneous dissolution.