Product details table:

Physical and Chemical Properties

Physical Properties

1. Appearance:
   • Typically presents a bright silvery metallic color with a smooth and glossy surface due to the zinc coating.
   • Surface treatments, such as chromating or oiling, can enhance corrosion resistance and appearance.
2. Density:
   • The density is approximately 7.85 g/cm³ , similar to carbon steel.
   • The zinc coating adds negligible weight but enhances durability.
3. Melting Point:
   • The base steel has a melting point of around 1510°C , while the zinc coating melts at approximately 420°C .
   • This combination provides good stability in moderate-temperature environments.
4. Coefficient of Thermal Expansion:
   • Around 12 × 10⁻⁶/°C for the base steel, slightly higher for the zinc coating.
   • Ensures dimensional stability under temperature fluctuations.
5. Thermal Conductivity:
   • Moderate thermal conductivity, approximately 50 W/(m·K) for the base steel.
   • The zinc layer slightly reduces heat transfer efficiency but improves corrosion resistance.
6. Electrical Conductivity:
   • Electrical conductivity is low compared to pure metals like copper.
   • The zinc coating further reduces conductivity, making it unsuitable for electrical applications.

Chemical Properties

1. Corrosion Resistance:
   • Excellent corrosion resistance due to the protective zinc coating, which acts as a sacrificial layer.
   • The zinc layer prevents oxygen and water from reaching the steel substrate, significantly delaying rust formation.
   • Suitable for outdoor and humid environments.
2. Antioxidation:
   • The zinc coating oxidizes slowly, forming a protective zinc oxide layer that further enhances durability.
   • At high temperatures above 420°C , the zinc coating may degrade, exposing the base steel to oxidation.
3. Chemical Stability:
   • Resists most mild chemical environments, including atmospheric exposure and weak acids.
   • However, strong acids (e.g., hydrochloric acid) or alkalis can damage the zinc layer, reducing its effectiveness.
4. Passivation:
   • The zinc coating naturally forms a passivation layer when exposed to air, enhancing corrosion resistance.
   • Additional treatments, such as chromating, can further improve the passivation effect and longevity.

Applications

• Widely used in construction , such as roofing, wall panels, and structural components, due to its excellent corrosion resistance and durability.
• Commonly applied in automotive manufacturing for parts requiring rust-proof properties, such as chassis and body panels.
• Used in household appliances , like refrigerators and washing machines, for aesthetic and functional purposes.
• Ideal for industrial equipment , including storage tanks and ductwork, where resistance to environmental factors is critical.
• Suitable for agricultural applications , such as greenhouse structures and irrigation systems, due to its weather-resistant properties.