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

CuZn37 Brass

Brass

Designation

CuZn37 (37% Zinc Brass)

  • International Standards: CW507L (EN 12163), C27450 (ASTM), H63 (GB/T 5231).

  • Cast Variant: ZCuZn37Pb2 (GB/T 1176-2013).


Key Features

1. High Zinc Content: Zn 37%, Cu 60–63%, optimized for strength and casting.

2. Workability: Suitable for hot rolling and forging; cold working requires controlled deformation.

3. Corrosion Resistance: Stable in atmospheric environments; prone to dezincification in acidic/sulfur conditions.

4. Conductivity: Electrical conductivity 24% IACS, thermal conductivity ≥90 W/(m·K).


Product Forms & Dimensions

Form

Dimensions

Sheet

Thickness: 0.5–50mm; Width: 100–1500mm

Rod

Diameter: Φ5–300mm; Length: 1000–6000mm

Tube

OD: 5–150mm; Wall Thickness: 0.5–10mm

Wire

Diameter: 1.0–20mm; Custom lengths

Castings

Customized (Max weight: 50kg)


Chemical Composition (%)

Element

Cu

Zn

Pb

Fe

Total Impurities

Content

60.0–63.0

Balance

≤0.1

≤0.1

≤0.5

Note: Cast variant (ZCuZn37Pb2) contains 1.0–3.0% Pb under RoHS exemption.


Physical Properties

Property

Value

Density

8.4 g/cm³

Melting Point

880–900°C

Thermal Conductivity

90–100 W/(m·K)

Electrical Conductivity

24% IACS


Mechanical Properties

Condition

Tensile Strength (MPa)

Yield Strength (MPa)

Elongation (%)

Hardness (HV)

Annealed

330–380

160–200

≥30

95–120

Hot-Rolled

420–520

300–380

≥18

130–160

Cold-Rolled

580–680

480–550

≥5

170–200


Core Advantages

1. High Strength & Wear Resistance: Cold-rolled tensile strength up to 680 MPa.

2. Superior Castability: Ideal for complex castings (e.g., valve bodies).

3. Cost Efficiency: 25–30% lower cost than low-zinc brasses.


Applications

· Mechanical: Gears, bearing cages, bushings.

· Construction: Decorative hardware, door locks.

· Shipbuilding: Seawater pump components.


Processing Guidelines

1. Cold Working: Anneal at 450–550°C (protective atmosphere).

2. Hot Working: Rolling temperature 680–750°C.

3. Welding: Use BAg-8 brazing; avoid fusion welding.


Key Application Scenarios

Industry

Typical Components

Requirements

Shipbuilding

Seawater pump valves

Corrosion resistance, strength

Machinery

Gear blanks

High strength, wear resistance


FAQ

Q1: CuZn37 vs. CuZn36?

A1: CuZn37 has higher Zn (37%) for higher strength; CuZn36 focuses on general applications.


Q2: How to prevent dezincification?

A2: Apply protective coatings (Ni/Cr) or avoid acidic/sulfur environments.


Q3: Is ZCuZn37Pb2 RoHS-compliant?

A3: Leaded variants require compliance with industrial exemptions.


Standards

Standard

Scope

EN 12163

Rod/wire technical conditions

GB/T 5231

Chinese brass classifications

ASTM B584

Copper alloy castings


Note: Actual parameters may vary depending on manufacturing processes.


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