1. Material Standards & Designation

Primary Standards:

• EN 10346 - Continuously hot-dip coated steel flat products

• EN 10169 - Continuously organic coated steel flat products

Designation Explanation:

• S350GD: Structural steel with minimum yield strength of 350 MPa

• +Z: Hot-dip zinc coating

• +PE/PVDF/SMP/EPX: Organic coating type

2. Chemical Composition (% by weight, Base Steel)

3. Mechanical Properties

4. Coating System Specifications

Zinc Coating (Substrate):

Organic Coating System:

5. Physical Properties

6. Product Specifications

7. Coating Performance Characteristics

Mechanical Performance:

Weathering Performance:

• PVDF: 25+ years color retention (ΔE ≤ 5)

• SMP: 15-20 years color retention (ΔE ≤ 5)

• Polyester: 10-15 years color retention (ΔE ≤ 5)

• EPX: 10+ years color retention (ΔE ≤ 5)

8. Testing & Inspection

Mandatory Tests:

• Tensile test (EN ISO 6892-1)

• Bend test (EN ISO 7438)

• Impact resistance test (EN 13523-5)

• Adhesion test (EN 13523-8)

• Color difference measurement (ΔE ≤ 1.0)

• Gloss measurement (±5% of target)

• Film thickness measurement (±2μm)

• Zinc coating mass measurement

Optional Tests:

• Salt spray test (1000+ hours to white rust)

• QUV weathering test (2000+ hours)

• Humidity resistance test (1000+ hours)

• Chemical resistance test

• Third-party certification

• Fire performance test

9. Applications

Structural Applications:

• High-strength roofing systems

• Structural wall panels

• Industrial building envelopes

• Warehouse and logistics centers

• Factory and plant constructions

Architectural Applications:

• High-rise building facades

• Curtain wall systems

• Architectural canopies

• Sports stadiums

• Cultural centers

Special Applications:

• Clean room panels

• Cold storage facilities

• Power plant buildings

• Transportation facilities

• Marine environment structures