EN 10346 Prepainted Steel Coil Pre Coated Steel AISI ASTM Standard
Prepainted galvanized steel coils are composite materials consisting of a galvanized steel
substrate coated with organic paint layers. They combine the corrosion resistance of zinc
coating with the decorative and weather-resistant properties of colored coatings, widely
used in construction, appliances, and transportation industries.
Mechanical Properties
Tensile Strength: 280-550 MPa
Yield Strength: 140-350 MPa
Elongation: 15%-30%
Hardness: HRB 40-80
Bendability: Capable of 180° bending (T-bend test: 2T-4T qualified)
Thermal Properties
Operating Temperature Range: -40°C to 120°C (long-term)
Instantaneous Heat Resistance: Up to 200°C (special coatings)
Coefficient of Thermal Expansion: 11.5×10⁻⁶/°C (similar to carbon steel)
Surface Texture
Smooth Surface: Mirror-like finish
Fine Texture: Slight orange-peel effect
Embossed Surface: Regular patterns (wood grain, stone, etc.)
Sandblasted Surface: Uniform matte texture
Major Applications
(1) Construction (60% Market Share)
Roofing/Wall Cladding: Airports, stadiums, factories (PVDF-coated).
Sandwich Panels: PU/PIR or rock wool cores (fireproof insulation).
(2) Appliances (25%)
Refrigerator/AC casings (EG + PE, smooth finish).
Washing machine panels (antibacterial coating).
(3) Transportation
Shipping container houses, truck bodies (high-strength GI).
Subway station decor (fire-resistant coated steel).
Our company’s mainly advantages
♦ We have rich export operation experience for this product, and we know about the common-used
spec in your country.
♦ We have long-term cooperation with our Forwarder Agent, and harbor reinforcement team,
they dedicated to the operation of these raw material product for over 10 years.
♦ For every order, we have strictly packing and loading demand, we also take samples from
the batch product, check the mechanical properties and the capacity of corrosion resistant.
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