DX51D Z150 Galvanized Steel Sheet: High-Performance Corrosion Resistance for Industrial Applications
DX51D Z150 Galvanized Sheet Product Overview
DX51D Z150 galvanized steel sheet is a cold-rolled carbon steel product with a 150g/m² zinc coating applied via the hot-dip galvanizing (HDG) process. Compliant with EN 10346 standards, this material combines excellent formability (suitable for deep drawing/bending) with enhanced rust protection, delivering 8-15 years of maintenance-free service in moderate environments. Its zinc-iron alloy layer provides superior adhesion compared to electrogalvanized alternatives, making it ideal for automotive panels, roofing systems, and agricultural equipment.
Key Technical Specifications
1. Base Material Properties
| Parameter | DX51D Z150 Values | Testing Standard |
|---|---|---|
| Thickness Range | 0.12mm – 6.00mm (±0.02mm) | ISO 9444 |
| Yield Strength | 240-380 MPa | ISO 6892-1 |
| Tensile Strength | 270-500 MPa | ISO 6892-1 |
| Elongation (A80) | ≥22% | ISO 7438 |
| Zinc Coating | Z150 (150g/m²) | ISO 1461 |
Note: Z150 coating equals 210μm zinc thickness
2. Chemical Composition
| Element | C | Si | Mn | P | S | Ti |
|---|---|---|---|---|---|---|
| Content | ≤0.12% | ≤0.50% | ≤0.60% | ≤0.100% | ≤0.045% | ≤0.30% |
This low-carbon formulation ensures optimal weldability (C.E. <0.35) and cold-forming capabilities without cracking.
Performance Advantages
- Superior Corrosion Protection
- Salt spray resistance: 480-720 hours (ISO 9227)
- Zinc-iron alloy layer hardness: 250 HV (vs 150 HV for pure zinc)
- Surface Treatment Options
Code Treatment Key Benefit C Chromate passivation 72hr extra rust prevention Q Phosphating + oiling Class 1 paint adhesion (ISO 2409) O Oiling only Scratch resistance during transport - Environmental Adaptability
Application Environment Recommended Coating Service Life* Indoor dry storage Z150 + Chromate (C) 15-18 years Coastal regions Z150 + PVDF topcoat 12-15 years Automotive underbody Z150 + Epoxy primer 10+ years
Based on ISO 12944-2 corrosion categories
Comparative Analysis
DX51D vs Competing Grades
| Grade | Coating Weight | Formability (r-value) | Cost per Ton |
|---|---|---|---|
| DX51D Z150 | 150g/m² | 1.8 | $980 |
| SGCC (JIS) | 120g/m² | 1.5 | $850 |
| ASTM A653 | G90 (275g/m²) | 1.2 | $1,150 |
Key advantage: DX51D Z150 offers 25% better deep-drawing performance than SGCC grades
Manufacturing & Quality Control
- Production Process:
- Continuous annealing at 720°C
- Zinc bath immersion (455°C ±5°C)
- Air knife coating control (±5g/m² precision)
- Certifications:
- ISO 9001:2015 quality management
- RoHS compliance (Pb/Cd-free)
- Testing Protocols:
- 3T bend test (ASTM A90)
- XRF coating thickness verification
Recommended Applications
- Construction Sector
- Standing seam roofs (0.6mm sheets withstand 150km/h winds)
- HVAC ducting (meets SMACNA airflow standards)
- Automotive Manufacturing
- Body panels (compatible with MIG/TIG welding)
- Chassis components (salt spray resistance >600hrs)
- Agricultural Equipment
- Grain silos (Z150 + Q treatment resists fertilizer corrosion)
- Livestock enclosures (self-healing zinc protection)
Why Choose DX51D Z150?
- Custom Sizing: Available in 600-1500mm widths with CNC cutting services
- Global Compliance: Meets EN 10346 (EU), JIS G3302 (JP), GB/T 2518 (CN)
- Sustainable Choice: 85% recycled steel content with zinc recovery system
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