Strip coil of Brass CuZn37
CuZn37 is a brass alloy consisting of approximately 63% copper (Cu) and 37% zinc (Zn) by weight. It is also commonly referred to as CW508L under the EN (European Norm) designation or C27200 under the UNS (Unified Numbering System).
CuZn37 (also known as Brass 63/37) is a copper-zinc alloy consisting of approximately 63% copper (Cu) and 37% zinc (Zn). It is widely used in strip and coil forms due to its excellent mechanical properties, corrosion resistance, and workability.
Chemical Composition (Typical for CuZn37)
Element | Content (%) |
Copper (Cu) | 62.0 – 64.0 |
Zinc (Zn) | Balance |
Lead (Pb) | ≤ 0.03 |
Iron (Fe) | ≤ 0.10 |
Others (total) | ≤ 0.10 |
Forms Available(Typical for CuZn37)
· Strip: Thin, flat, rolled brass used in connectors, electronics, and decorative trim.
· Coil: Continuous rolled strip, ideal for stamping, forming, and automated production lines.
· EN 1652 / EN 1654 – For strip and sheet
· ASTM B36/B36M – Standard for brass plate, sheet, strip, and rolled bar
EN CW508L, DIN 2.0321, UNS C27200
Parameter | Typical Range |
Thickness | 0.05 mm ---- 3.0 mm |
Width | 5 mm --- 600 mm (can go up to 1,000 mm by request) |
Coil Inner Diameter (ID) | 150 mm, 300 mm, or 508 mm (common standards) |
Coil Outer Diameter (OD) | Up to 1,200 mm (varies by mill/slitter capacity) |
Coil Weight | Usually 500–2,000 kg per coil (customizable) |
· Temper/Hardness: Soft (Annealed), 1/4H, 1/2H, H, EH
· Edge Options: Slit edge, deburred edge, round edge
· Surface Finish: Bright, dull, polished, or brushed
Key Properties of Strip coil Brass CuZn37
· Good cold workability – Ideal for deep drawing and forming
· Moderate strength – Can be increased with cold working
· Excellent corrosion resistance – Especially in water and air
· Non-magnetic
· Good electrical and thermal conductivity
Property | Value |
Tensile Strength | 300–500 MPa (depends on temper) |
Elongation | 5–40% (varies with temper) |
Density | 8.44 g/cm³ |
Electrical Conductivity | 28% IACS |
Thermal Conductivity | 120 W/m·K |
Melting Point | 900–940 °C |
Applications of CuZn37 Strip and Coil
1. Electrical and Electronic Industry
Connectors, terminals, and contact springs
Fuse components
Battery terminals
Precision stamped electronic parts
2. Stamping and Deep Drawing Parts
Washers, gaskets, and eyelets
Lamp bases and casings
Buttons and decorative items
Automotive deep-drawn components
3. Sanitary and Plumbing Hardware
Faucet components
Fittings and valves
Shower heads and water meter parts
4. Decorative and Architectural Use
Nameplates and labels
Emblems and badges
Decorative trim and panels
5. Aerospace and Defense (to some extent)
Instrument components
Low-stress aerospace brackets (non-critical)