DX52D/SGCD1 Galvanized Sheet

DX52D (EN 10346) and SGCD1 (JIS G3313) galvanized steel sheets are high-performance cold-rolled materials optimized for precision forming in automotive, appliance, and construction applications. Featuring a zinc coating range of 60-275g/m², these sheets combine ‌enhanced bendability‌ (r-value up to 2.1) with ‌600+ hours salt spray resistance‌ (ISO 9227). The DX52D grade specifically offers 30% better deep-drawing performance than standard DX51D, while SGCD1’s ultra-low carbon content (≤0.12%) ensures crack-free stamping for complex geometries.
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Product Introduction

‌DX52D/SGCD1 Galvanized Steel Sheets: Advanced Corrosion Resistance & Formability


DX52D/SGCD1 Galvanized Sheet‌ Product Overview‌

DX52D (EN 10346) and SGCD1 (JIS G3313) galvanized steel sheets are high-performance cold-rolled materials optimized for precision forming in automotive, appliance, and construction applications. Featuring a zinc coating range of 60-275g/m², these sheets combine ‌enhanced bendability‌ (r-value up to 2.1) with ‌600+ hours salt spray resistance‌ (ISO 9227). The DX52D grade specifically offers 30% better deep-drawing performance than standard DX51D, while SGCD1’s ultra-low carbon content (≤0.12%) ensures crack-free stamping for complex geometries.


‌Key Technical Specifications‌

1. ‌Material Grades & Standards‌

Grade Standard Equivalent Grades Key Application
DX52D+Z EN 10346 S220GD (EU) Automotive panels
SGCD1 JIS G3313 SGCC (Japan) Appliance housings

2. ‌Dimensional Parameters‌

  • ‌Thickness‌: 0.12mm (ultra-thin) to 6.00mm (±0.03mm tolerance)
  • ‌Width‌: 600-1,500mm (custom slit edges available)
  • ‌Coating Weight‌:
    • Z100 (100g/m²) = 14μm zinc layer
    • Z275 (275g/m²) = 38.5μm zinc layer

3. ‌Mechanical Properties‌

Grade Yield Strength (MPa) Tensile Strength (MPa) Elongation (A80)
DX52D 140-300 270-420 ≥26%
SGCD1 180-260 300-420 ≥30%

‌Advanced Surface Treatments‌

To optimize performance across environments:

Code Treatment Corrosion Resistance Key Benefit
C Chromate passivation 500-800hrs (salt spray) REACH-compliant, no hexavalent Cr
Q Phosphating + oiling 300-500hrs Class 1 paint adhesion (ISO 2409)
O Oiling only 72-120hrs Scratch protection during handling

‌Chemical Composition Analysis‌

DX52D (EN 10143)

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

SGCD1 (JIS G3313)

Element C Si Mn P S
Content ≤0.12% ≤0.50% ≤0.60% ≤0.040% ≤0.030%

The controlled carbon content minimizes strain aging, critical for components requiring repeated bending.


‌Environmental Adaptability Guide‌

Application Environment Recommended Coating Service Life*
Indoor dry storage Z60 + Chromate (C) 15-20 years
Automotive underbody Z180 + Q treatment 10-12 years
Coastal architecture Z275 + PVDF topcoat 25+ years

Based on ISO 12944-2 corrosion categories C3-C5


‌Forming & Fabrication Advantages‌

  1. ‌Deep Drawing Performance‌
    • Limiting drawing ratio (LDR): 2.3:1 (DX52D) vs 2.0:1 (DX51D)
      | Grade | r-value | n-value |
      |———|———|———|
      | DX52D | 1.9 | 0.22 |
      | SGCD1 | 2.1 | 0.20 |
  2. ‌Welding Compatibility‌
    • Resistance welding: 8-12kA current range
    • Laser welding speed: 4m/min (1mm thickness)
  3. ‌Surface Finish Options‌
    • Zero spangle (Ra 0.5μm) for high-gloss painting
    • Regular spangle (Ra 1.2μm) for architectural aesthetics

‌Certifications & Compliance‌

  • ISO 9001:2015 quality management system
  • RoHS/REACH compliant (Pb/Cd/Phthalate-free)
  • Meets EU Construction Products Regulation 305/2011

‌Industry Applications‌

  1. ‌Automotive Manufacturing‌
    • Door inners (DX52D Z180 withstands 1M+ stamping cycles)
    • Chassis components (SGCD1 Z275 resents road salt corrosion)
  2. ‌Appliance Engineering‌
    • Refrigerator liners (Z100 coating + Q treatment)
    • Washing machine drums (DX52D Z150 with 180° hemming)
  3. ‌Building Systems‌
    • Standing seam roofs (Z275 + SMP coating, 50-year warranty)
    • Solar panel frames (SGCD1 Z200, 35% lighter than aluminum)

‌Competitive Analysis‌

Parameter DX52D Z150 SGCD1 Z180 ASTM A653 G90
Yield Strength 220 MPa 240 MPa 230 MPa
Salt Spray Hours 720 600 480
Cost/Ton (USD) $1,050 $980 $1,200

Key advantage: DX52D offers 20% better corrosion resistance than G90 at 15% lower cost


‌Sustainability Features‌

  • 88% recycled steel content in substrate
  • Zinc recovery rate ≥99.5% in galvanizing process
  • Water-based pretreatment chemicals (VOC <30g/m²)

Product Show

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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