CuZn10 Brass

Designation

CuZn10 (10% Zinc Brass)

International Standards: CW501L (EN), 2.0230 (DIN 1708), H90 (GB/T 5231).

Key Features

1. High Zinc Brass: Zn 10%, Cu ≥89.5%, balances strength and ductility.

2. Cold Workability: Ideal for deep drawing, stamping, and forming.

3. Corrosion Resistance: Resists atmospheric and freshwater corrosion.

4. Conductivity: Electrical conductivity ≥50.0 Ω*mm²/m (annealed).

5. Aesthetic Finish: Golden-yellow surface after polishing.

Product Forms & Dimensions

Form	Dimensions
Sheet	Thickness: 0.2–50mm; Width: 100–1500mm
Strip	Thickness: 0.1–5mm; Width: 10–600mm
Rod	Diameter: Φ5–300mm; Length: 1000–6000mm
Wire	Diameter: 0.1–20mm; Custom lengths
Tube	OD: 3–150mm; Wall Thickness: 0.3–8mm

CuZn10 Chemical Composition (%)

Element	Cu	Zn	Pb	Fe	Total Impurities
Content	89.5–91.5	Balance	≤0.03	≤0.05	≤0.2
Note: Lead content complies with RoHS (≤0.03%).

Physical Properties

Property	Value
Density	8.8 g/cm³
Melting Point	1040–1060°C
Thermal Conductivity	120–125 W/(m·K)
Electrical Conductivity	50.0–52.0 Ω*mm²/m
Resistivity	3.4×10⁻⁸ Ω·m
Thermal Expansion	20.0×10⁻⁶/K（20–300°C）

Mechanical Properties

Condition	Tensile Strength (MPa)	Yield Strength (MPa)	Elongation (%)	Hardness (HV)
Annealed	250–300	100–150	≥40	60–80
Half-Hard	350–400	250–300	≥15	100–130
Hard	450–550	400–450	≥5	140–170

Core Advantages

1. Superior Formability: Better deep-drawing capability than high-zinc brasses.

2. Fatigue Resistance: Excellent crack resistance under cyclic loads.

3. Cost-Effective: 15–20% lower cost than pure copper.

Applications

• Electronics: Connector springs, shielding covers.

• Hardware: Locks, zippers, buttons (plating substrate).

• Automotive: Radiator tubes, fuel fittings.

• Decoration: Lamp components, jewelry substrates.

Processing Guidelines

1. Cold Working: Anneal at 450–600°C (N₂ protection).

2. Hot Working: Rolling temperature 700–800°C.

3. Welding: Use brazing or laser welding.

4. Surface Treatment: Acid pickling before plating.

Key Application Scenarios

Industry	Typical Components	Requirements
Electronics	SIM card trays, battery contacts	High elasticity, fatigue resistance
Automotive	Radiator tubes	Corrosion resistance, thermal conductivity
Construction	Door handles, bathroom fixtures	Surface finish, oxidation resistance

FAQ of CuZn10 Material

Q1: CuZn 10 vs. CuZn 30?

A1: CuZn30 has higher Zn (30%), better strength but lower ductility.

Q2: How to prevent dezincification?

A2: Avoid sulfur-rich environments or apply protective coatings.

Q3: Why lower conductivity than pure copper?

A3: Zinc increases lattice distortion, reducing electron mobility.

Standards

Standard	Scope
EN 12164	Rod/wire technical conditions
GB/T 5231	Chinese brass classifications
DIN 17660	Chemical & mechanical specs
ASTM B134	U.S. specifications for wire

Note: Actual parameters may vary depending on manufacturing processes.