CAMK67300 High-strength Wear-resistant Manganese Brass
Material Designation
| GB | HMn60-3-1.7-1 |
| UNS | C67300 |
| EN | / |
| JIS | / |
Chemical Composition
| Copper, Cu | 58.0 – 63.0% |
| Sulphur, Mn | 2.0 – 3.5% |
| Silicon, Si | 0.5 – 1.5% |
| Plumbum, Pb | 0.4 – 3.0% |
| Zinc, Zn | Rem. |
Physical Properties
| Density | 8.20 g/cm3 |
| Electrical Conductivity | Min. 13 %IACS |
| Thermal Conductivity | 63 W/( m·K) |
| Melting Point | 886 ℃ |
| Thermal Expansivity | 20.4 10-6/ K |
| Modulus of Elasticity | 110 Gpa |
Characteristics
CAMK67300 is a copper-zinc-manganese-silicon-lead copper-based multi-element (α+β) two-element alloy, which is a copper alloy with high strength and high wear resistance. The addition of silicon and manganese improves the strength and wear resistance of the alloy, and the addition of lead enhances its wear resistance and machinability. It has mechanical properties, casting properties, cutting properties and low cost, and has become one of the main manufacturing materials for propellers. one.
In polluted seawater, manganese brass will undergo de-Zn corrosion, and its resistance to cavitation corrosion is also poor, resulting in manganese brass propellers prone to corrosion fatigue fracture. The copper-zirconium binary phase diagram shows that when zirconium is added to manganese brass, the strengthening phase of Cu5Zr or Cu3Zr will be precipitated first, which will serve as the subsequent nucleation particles and play a role in fine-grain strengthening.
Application
In addition to being used to manufacture propellers, CAMK67300 can also be used to manufacture automobile synchronizer gear rings, bearing sleeves, gears, condensers, gate valves, etc.
Mechanical Properties
|
Specification mm (up to) |
Temper |
Tensile Strength Min. MPa |
Yield Strength Min. MPa |
Elongation Min. A% |
Hardness Min. HRB |
|
φ 5-15 |
HR50 |
485 |
345 |
15 |
≥120 |
|
φ 15-50 |
HR50 |
440 |
320 |
15 |
≥120 |
|
φ 50-120 |
M30 |
380 |
172 |
20 |
≥120 |
Advantage
1. We actively respond to any questions from customers and provide shorter delivery times. If customers have urgent needs, we will fully cooperate.
2. We focus on controlling the production process so that the performance of each batch is as consistent as possible and the product quality is excellent.
3. We cooperate with the best domestic freight forwarders to provide customers with sea, rail and air transportation and combined transportation solutions, and have plans for transportation difficulties caused by natural disasters, epidemics, wars and other factors.