DX53D/ SGCD2/SGCD3 Galvanized Sheet

DX53D (EN 10346) and SGCD2/SGCD3 (JIS G3302) galvanized steel sheets are advanced cold-rolled materials engineered for industries requiring exceptional formability and long-term corrosion protection. Featuring zinc coatings from 60-275g/m² (Z60-Z275), these sheets deliver ‌800+ hours of salt spray resistance‌ (ISO 9227) while maintaining precise dimensional tolerances (±0.02mm). Widely used in automotive body panels, appliance housings, and architectural cladding, they outperform standard galvanized steels in deep-drawing applications due to optimized alloy compositions.

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Product Introduction

‌DX53D/SGCD2/SGCD3 Galvanized Steel Sheets: High-Strength Corrosion Resistance for Demanding Applications‌


‌DX53D/ SGCD2/SGCD3 Galvanized Sheet Product Overview‌

DX53D (EN 10346) and SGCD2/SGCD3 (JIS G3302) galvanized steel sheets are advanced cold-rolled materials engineered for industries requiring exceptional formability and long-term corrosion protection. Featuring zinc coatings from 60-275g/m² (Z60-Z275), these sheets deliver ‌800+ hours of salt spray resistance‌ (ISO 9227) while maintaining precise dimensional tolerances (±0.02mm). Widely used in automotive body panels, appliance housings, and architectural cladding, they outperform standard galvanized steels in deep-drawing applications due to optimized alloy compositions.


‌Key Technical Specifications‌

‌1. Material Grades & Standards‌

Grade Standard Key Application
DX53D+Z EN 10346 Automotive fuel tanks
SGCD2 JIS G3302 HVAC ducting systems
SGCD3 JIS G3302 Solar panel mounting frames

‌2. Dimensional Parameters‌

  • ‌Thickness‌: 0.12mm (ultra-thin electronics components) to 6.00mm (structural supports)
  • ‌Width‌: 600-1,500mm (compatible with roll-forming machines)
  • ‌Zinc Coating‌:
    • Z60 (60g/m²): 8.4µm layer for indoor environments
    • Z275 (275g/m²): 38.5µm layer for coastal infrastructure

‌3. Mechanical Properties‌

Grade Yield Strength (MPa) Tensile Strength (MPa) Elongation (A80%)
DX53D 140-260 270-380 ≥30%
SGCD2 180-260 300-420 ≥28%
SGCD3 160-240 280-400 ≥32%

‌Advanced Material Properties‌

  1. ‌Enhanced Formability‌
    • r-value (plastic anisotropy): 2.1 (DX53D) vs 1.6 (standard DX51D)
    • Limiting drawing ratio (LDR): 2.4:1 enables complex geometries
  2. ‌Weldability Performance‌
    • Recommended parameters for MIG welding:
      • Wire: ER70S-6 (1.2mm diameter)
      • Voltage: 18-22V
      • Travel speed: 45-60 cm/min
  3. ‌Surface Finish Options‌
    • Zero-spangle (RA 0.4µm) for Class A painted surfaces
    • Regular spangle (RA 1.5µm) for architectural aesthetics

‌Chemical Composition Analysis‌

‌DX53D (EN 10346)‌

Element C Mn P S Al
Content ≤0.12% ≤0.60% ≤0.10% ≤0.045% ≥0.020%

‌SGCD2/SGCD3 (JIS G3302)‌

Grade C Si Mn P S
SGCD2 ≤0.10% ≤0.50% ≤0.45% ≤0.030% ≤0.030%
SGCD3 ≤0.08% ≤0.50% ≤0.45% ≤0.030% ≤0.030%

The controlled carbon content in SGCD3 enables ‌15% higher elongation‌ compared to SGCD2, making it ideal for components requiring multiple bending operations.


‌Environmental Durability Guide‌

Exposure Condition Recommended Solution Expected Service Life
Indoor dry environments Z60 + chromate passivation 20-25 years
Automotive underbodies Z180 + epoxy primer 12-15 years
Offshore structures Z275 + PVDF coating 30+ years

‌Surface Treatment Comparison‌

Code Process Key Advantage
C Chromic acid treatment 240hr salt spray resistance
Q Phosphating + oiling Superior paint adhesion
S Chromate + oiling Scratch protection during transit

‌Industry-Specific Applications‌

  1. ‌Automotive Manufacturing‌
    • Door inner panels (DX53D Z140 withstands 500,000+ stamping cycles)
    • Chassis components (SGCD2 Z200 resists road salt corrosion)
  2. ‌Renewable Energy Systems‌
    • Solar tracker frames (SGCD3 Z275 achieves 25-year coastal durability)
    • Wind turbine housings (DX53D Z180 with 180° bend capability)
  3. ‌Construction Engineering‌
    • Perforated ceiling panels (0.4mm Z60 sheets with ±0.1mm hole precision)
    • Standing seam roofs (0.7mm Z275 withstands 160km/h winds)

‌Competitive Advantages‌

  • ‌Precision Tolerances‌: ±0.5% on thickness for high-speed stamping
  • ‌Custom Processing‌: Available in coil, sheet, or pre-cut blanks
  • ‌Global Certifications‌: Complies with REACH, RoHS, and ISO 14001

‌Technical Support Services‌

  • Finite element analysis (FEA) for part optimization
  • Salt spray testing reports upon request
  • On-site welding parameter consultation

By combining advanced metallurgical engineering with precision coating technologies, DX53D/SGCD2/SGCD3 galvanized sheets provide unmatched performance in corrosive environments while maintaining cost-efficiency for high-volume production.

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Luo Kaiwei Steel Company is a multi-ISO certified steel manufacturer specializing in carbon steel plates, pipes and galvanized coils since 2010. Competitive prices and ASTM/JIS compliant. Get instant quotes for bulk orders and global shipping support.

Tel: +86 15635685959

E-mail: [email protected]  

WhatsApp: +86 18912200505

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