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

H96 Brass

Brass

Designation and Standards

  • Standard Designation: H96 (Common Brass)

  • Corresponding International Standards: GB/T 5231-2001, GB/T 1527-1997

  • Material Category: Copper-Zinc Alloy (Cu-Zn), Copper Content 95%-97%


Product Features

  • High Electrical and Thermal Conductivity: Conductivity close to pure copper (about 90% IACS), suitable for electronic and electrical applications.

  • Excellent Corrosion Resistance: Strong corrosion resistance in atmospheric and freshwater environments, with no tendency for stress corrosion cracking.

  • Good Processability: Easy to cold/hot press, supports welding, forging, tin plating, and other processes.

  • Moderate Strength: The lowest strength among common brass, but higher than pure copper, with tensile strength ≥205-320 MPa.


Common Product Forms and Specifications

Product Form

Specification Range

Delivery Condition

Bar

Diameter: 4-350mm (Stock covers 6-350mm)

Bright turned, drawn round, black surface

Plate

Thickness: 0.3-300mm (Standard 1-150mm)

Machine-cut plate, forged plate

Strip

Thickness: 0.1-3.0mm

M (Soft), Y (Hard)

Tube

Outer diameter: 3-300mm (Capillary tube outer diameter 1-6.1mm)

M, Y2, Y, etc.

Wire

Diameter: 0.1-12.7mm

Coils or straight rods


Chemical Composition

Element

Cu

Zn

Fe

Pb

Ni

Total Impurities

Content (%)

95.0-97.0

Balance

≤0.10

≤0.03

≤0.5

≤0.2


Physical Properties

Performance Parameter

Value

Test Conditions

Density

8.85 g/cm³

Room temperature

Electrical Conductivity

≥90% IACS

Compared to pure copper

Thermal Conductivity

About 120 W/(m·K)

Similar to pure copper

Melting Point

About 1065°C

Alloy melting point

Coefficient of Thermal Expansion

18.5×10⁻⁶/°C (20-300°C)

Reference value for brass


Mechanical Properties


Performance Parameter

Value

Test Condition

Tensile Strength (σb)

205-320 MPa

Varies with condition (M/Y)

Elongation (δ10)

3%-45%

Up to 45%(M)

Hardness (HV)

45-105

Tube hardness (Y)

Annealing Temperature

540-600°C

To relieve internal stress

Hot Working Temperature

640-850°C

Recommended range


Core Advantages

  • Balanced Overall Performance: A combination of electrical conductivity, corrosion resistance, and workability, with high cost-effectiveness.

  • No Stress Corrosion Tendency: Suitable for long-term exposure to humid environments.

  • Wide Range of Forms Available: Supports customization in bars, plates, tubes, and other forms.


Product Applications

  • Electronics & Electrical: Conductive terminals, heat sinks, relay components.

  • Architectural Decoration: Door handles, plumbing fittings, decorative moldings.

  • Shipbuilding & Automotive: Freshwater-resistant piping joints, instrument parts.

  • Industrial Manufacturing: Cold heading parts, rivets, welded structural parts.


Processing Notes

  • Temperature Control: Avoid exceeding 850°C during hot working to prevent grain coarsening.

  • Cold Processing Lubrication: To reduce friction-induced surface cracks, it is recommended to use specialized cutting fluids.

  • Welding Process: Prefer gas shielded welding to prevent zinc evaporation that can cause pores.


Frequently Asked Questions

Q: What is the difference between H96 and red copper (pure copper)?

A: H96 is a copper-zinc alloy (brass) with higher strength but slightly lower conductivity. Red copper is pure copper (Cu≥99.9%) with superior conductivity but lower strength.


Q: What is the color of H96 brass?

A: It has a light yellow color due to the high copper content, which is distinctly different from the reddish-purple color of red copper.


Q: Is it suitable for seawater environments?

A: Tin is needed (e.g., naval brass) for seawater corrosion resistance. H96 is recommended for freshwater environments.


Standards Reference

  • Chemical Composition: GB/T 5231-2001

  • Mechanical Properties: GB/T 1527-1997 (Tubes)

  • Processing Specifications: ASTM B36 (General standard for brass plates)


Note: The above data is compiled from multiple industrial standards and supplier technical documents. Specific parameters may vary slightly depending on production processes and testing methods. It is recommended to refer to actual testing reports for precise details.


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