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Ningbo Jintian Copper (Group) Co., Ltd.
Ningbo Jintian Copper (Group) Co., Ltd.
Code
Brass

CuZn10 Brass

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


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

Q1: CuZn10 vs. CuZn30?

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.


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