H80 Brass

Designation and Standards

• Standard Designation: H80 (Common Brass)

• International/National Standards: GB/T 2041-1989 (Plates, Strips, etc.)

• Material Category: Copper-Zinc Alloy (Cu-Zn), Copper Content 79.0%-81.0%, Zinc as the remainder.

Product Features

• Balanced Strength and Plasticity: Tensile strength ≥265 MPa, elongation ≥50%, with excellent cold and hot working ability.

• Superior Corrosion Resistance: Good resistance to freshwater and atmospheric corrosion. For seawater environments, corrosion control is necessary (corrosion rate 0.0075-0.1 mm/a).

• Wide Processing Adaptability: Supports cold rolling, hot rolling, welding, and other processes, suitable for manufacturing thin wall pipes and corrugated pipes.

• Stress Corrosion Sensitivity: Low-temperature annealing (260℃) after cold working is required to relieve internal stress and prevent cracking.

Common Product Forms and Specifications

Chemical Composition

Physical Properties

Mechanical Properties

Core Advantages

• Outstanding Comprehensive Performance: Balanced strength, plasticity, and corrosion resistance, suitable for complex processing.

• High Environmental Corrosion Resistance: Excellent service life in freshwater and atmospheric conditions, superior to common carbon steel.

• Versatile Forms: Available in plates, tubes, wires, and more , adaptable to industrial customization needs.

Main Application Fields

• Construction Industry: Decorative fittings, plumbing parts, metal filters.

• Electronics: Waveguides, instrument casings, heat dissipation components.

• Marine and Automotive: Condenser tubes, heat exchanger tubes (corrosion control is essential in seawater).

• Paper Industry: Corrugated tubes, paper-making screen materials.

Processing Considerations

• Hot Working Control: Avoid exceeding 870℃ to prevent zinc volatilization, which may reduce performance.

• Stress Relief: Low-temperature annealing at 260℃ after cold working is recommended to reduce stress corrosion cracking risks.

• Welding Process: Argon protected welding is recommended to minimize porosity defects.

Frequently Asked Questions

Q: What is the difference between H80 and Copper (T2)?

A: H80 is brass (Copper-Zinc Alloy) with higher strength and lower cost, while T2 is pure copper (Cu ≥99.9%) with superior electrical conductivity but lower strength.

Q: Is H80 suitable for seawater environments?

A: It is not recommended for direct use in seawater due to its corrosion rate (0.0075-0.1 mm/a). Protective coatings are suggested for extended service life.

Q: What is the typical color of H80?

A: H80, with approximately 80% copper, has a light yellow color, noticeably different from the darker yellow of Alpha Brass like H62.

Standard References

• Chemical Composition and Processing Standards: GB/T 2041-1989 (Plates), GB/T 5232-1985 (Wrought Brass).

• Mechanical Property Testing: Refer to GB/T 228.1 (Metal Tensile Test).

Note: The above data is compiled from multiple industrial standards and technical documents. Actual performance may vary depending on production processes and testing conditions. Refer to the supplier's test report for specific values.