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

H60 Brass

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 Content59.0%-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.


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