Chemical Composition (%)
| Cu | 61.0~63.0 |
|---|---|
| Sn | 0.7~1.1 |
| Zn | Balance |
Mechanical & Physical Properties
| Tensile strength | ≥380 MPa |
|---|---|
| Hardness | 50~95 HBW |
| Density | 8.45 g/cm³ |
Typical Applications
Grade Overview
A tin brass made by adding about 1% tin to 62 brass, known as naval brass because its seawater corrosion resistance is markedly improved; it is used for marine parts, seawater pipe fittings, bolts, condenser tubes and heat exchangers. The tin addition substantially improves resistance to seawater while strength, workability and weldability remain good: tensile strength at least 380 MPa and hardness about 50-95 HBW. The corrosion benefit applies mainly to seawater, and the tendency to dezincification remains, so high temperature or high flow velocity still demands care. It is widely used for shipboard and seawater-contact pipe fittings and bolts. Control residual stress after cold working and stress-relieve the parts, and avoid service in ammonia-bearing environments. It is normally supplied as rod, bar and tube for machining, and it cuts freely to a good finish; the grade is a standard choice for marine fasteners and for condenser and heat-exchanger tube plates.
Data compiled from current standards; for selection reference only. Ordering is subject to the standard and the mill certificate.