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.