CuZn37 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)

Brass CuZn37 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.

CuZn37 Material Properties

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 of CuZn37 Material

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.