Brass Plate is a flat, solid sheet made from copper–zinc alloys, known for its excellent corrosion resistance, attractive gold-like appearance, and good mechanical strength.
Brass plates offer superior machinability, thermal conductivity, and durability, making them ideal for precision components, architectural elements, and long-lasting industrial products.
Brass plates are valued for their strength, corrosion resistance, machinability, thermal and electrical conductivity, and decorative finish.
Typical Chemical Composition
Alpha Brass Plates
| Element | % Range |
|---|---|
| Copper (Cu) | 63 – 70 |
| Zinc (Zn) | 30 – 37 |
| Lead (Pb) | ≤ 0.3 |
| Iron / Others | Trace |
Alpha–Beta Brass Plates (High Strength)
| Element | % Range |
|---|---|
| Copper (Cu) | 58 – 62 |
| Zinc (Zn) | 38 – 40 |
| Tin (Sn) | 0.5 – 1.0 |
| Lead (Pb) | ≤ 0.2 |
Free-Machining Brass Plates
| Element | % Range |
|---|---|
| Copper (Cu) | ~60 |
| Zinc (Zn) | ~35 |
| Lead (Pb) | 2 – 3 |
Physical Properties
| Property | Typical Value |
|---|---|
| Density | 8.4 – 8.6 g/cm³ |
| Melting Range | 880 – 940 °C |
| Electrical Conductivity | 20 – 30% IACS |
| Thermal Conductivity | 110 – 130 W/m·K |
| Thermal Expansion | 19 – 21 µm/m·°C |
| Magnetic Property | Non-magnetic |
| Color | Yellow-gold to reddish-gold |
Mechanical Properties (Plate Form)
| Property | Annealed | Half-Hard | Hard |
|---|---|---|---|
| Tensile Strength | 300 – 420 MPa | 450 – 620 MPa | 650 – 750 MPa |
| Yield Strength | 120 – 200 MPa | 300 – 450 MPa | 500+ MPa |
| Elongation | 35 – 60% | 15 – 25% | 5 – 10% |
| Hardness (HV) | 80 – 100 | 120 – 160 | 180 – 220 |
| Modulus of Elasticity | ~100 GPa | ||
Key Characteristics
✔ High strength-to-weight ratio
✔ Excellent machinability
✔ Good corrosion resistance
✔ High thermal and electrical conductivity
✔ Non-sparking and antimicrobial properties
✔ Decorative surface finish
✔ Easy soldering, brazing, and welding
Available Forms & Sizes
Flat and precision-ground plates
Clad and patterned plates
Thickness range: 3 mm to 100 mm+
Surface finishes: mill, polished, brushed, mirror, protective film
Applications
Marine valve plates and pump housings
Electrical bus bars and earthing plates
Bearing and machine base plates
Architectural panels and signage
Non-sparking tools and defense applications
Advantages
✔ High mechanical strength
✔ Excellent corrosion resistance
✔ Stable dimensional accuracy
✔ Easy machining and forming
✔ Decorative appeal
✔ Long service life
✔ Cost-effective versus bronze
Why Choose Brass Plate?
Brass plate provides an ideal balance between copper and bronze, offering strength, corrosion resistance, machinability, thermal and electrical performance, and long-term durability. It is a reliable engineering material for both functional and decorative applications.