H60 Brass

Designation and Standards

• Standard Designation: H60 (Common Brass)

• International/National Standards: GB/T 5231-2012 (Wrought Brass), GB/T 4423-2007 (Bars)

• Equivalent International Grades: ASTM C28000 (American Standard), JIS C2800 (Japanese Standard)

• Material Category: Copper-Zinc Alloy (Cu-Zn), Copper Content 59.0%-61.0%, Zinc Balance (Approx. 39%-41%).

Product Features

Economic and Performance Balance:

Moderate copper content, lower cost compared to Alpha Brass (such as H62, H65), suitable for large-scale industrial applications.

Excellent Working ability:

Good cold and hot working ability, supports stamping, forging, and welding processes. Annealing is required after cold working to relieve stress.

Moderate Strength:

Tensile Strength ≥300 MPa, suitable for general structural components and non-high-load applications.

Limited Corrosion Resistance:

Moderate resistance to corrosion in freshwater and dry atmospheric environments. Prone to dezincification corrosion in humid or sulfur-containing environments.

Chemical Composition

Element	Cu	Zn	Pb	Fe	Total Impurities
Content (%)	59.0-61.0	Remainder (Approx. 39%-41%)	≤0.03	≤0.10	≤0.5

Physical Properties

Property	Value	Remarks
Density	8.4-8.45 g/cm³	Advantageous for lightweight design
Electrical Conductivity	Approx. 20% IACS	Suitable for general electrical applications
Thermal Conductivity	110-115 W/(m·K)	Suitable for heat dissipation components
Coefficient of Thermal Expansion	21.2×10⁻⁶/°C (20-300°C)	Good thermal stability
Melting Point	900-925°C	Moderate casting flow ability

Mechanical Properties

Property	Value	Test Conditions
Tensile Strength (σb)	300-550 MPa	Varies significantly depending on processing state (M/Y)
Elongation (δ10)	≥8% (Y)	Up to 35% (M)
Hardness (HB)	75-100	Higher hardness (Y)
Annealing Temperature	500-600°C (Conventional Furnace Annealing)	Eliminate cold work hardening

Common Product Forms and Specifications

Product Form	Specification Range	Standard/Condition
Plate	Thickness 0.5-50mm, Width 305-1000mm	Hot Rolling(R), Annealed (M), Hard (Y)
Strip	Thickness 0.1-2.0mm	M, Y₂, Y
Bar	Diameter 5-150mm, Length 2000-6000mm	Bright drawn and Black Round Bars
Wire	Diameter 0.5-10.0mm	Coils or Straight Rods
Tube	Outer Diameter 10-300mm, Wall Thickness 1.0-20mm	Cold Working or 1/2 Hard

Core Application Fields

• Construction Hardware: Door locks, hinges, general-purpose pipes (non-high-pressure applications).

• Consumer Goods: Zipper heads, buttons, decorative hardware.

• Industrial Components: Low-load bolts, washers, stamped parts.

• Heat Dissipation Components: Simple heat sinks, ventilation ducts (non-high-thermal-conductivity applications).

• Decorative Materials: Metal mesh, low-cost handicrafts.

Processing Considerations

• Annealing Process: After cold working, anneal at 500-600°C to prevent stress corrosion cracking.

• Welding Requirements: Prefer soldering and brazing or argon protected welding to prevent zinc evaporation and porosity.

• Corrosion Protection: In humid environments, apply nickel plating or anti-corrosion coatings.

• Machining: Due to low lead content, use sharp tools to reduce burr formation.

Frequently Asked Questions

Q: What is the difference between H60 and H59 brass?

A: H60 has slightly higher copper content (59%-61% vs. 57%-60% for H59), resulting in better plasticity but slightly lower strength. The cost is similar.

Q: Is H60 suitable for making shell casings or high-precision parts?

A: No, H60 has lower strength and plasticity compared to H68/H70, making it more suitable for low-load general-purpose parts.

Q: How can the corrosion resistance of H60 be improved in sulfur-containing environments?

A: Applying a tin plating or epoxy resin can effectively mitigate corrosion.

Reference Standards

• Chemical Composition and Processing Specifications: GB/T 5231-2012, GB/T 4423-2007 (Bars)

• Mechanical Property Testing: GB/T 228.1 (Metal Tensile Testing)

• International Standards: ASTM B36 (Plates), JIS H3250 (Japanese Standard)

Note: The above data is compiled from various industrial standards and technical documents. Actual parameters may vary depending on manufacturing processes. Refer to supplier test reports for precise values.