H96 Brass

GB Standard

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.