DC54D+AZ150 AZ180 AZ200 Al-Zn Alloy-Coated Galvalume Steel Coil

DC54D+AZ Galvalume Steel Coil is an ultra-deep drawing grade hot-dip aluminum-zinc (Al-Zn) alloy coated steel, manufactured with a DC54D cold-rolled substrate and a 55% Al-43.4% Zn-1.6% Si galvalume coating (+AZ). It is the highest formability grade in the common DC series, designed for the most complex stamping, deep drawing, and bending operations without cracking or surface defects.

Compared with DC51D/DC52D/DC53D, DC54D offers lower yield strength, higher elongation, and superior workability, making it the top choice for automotive inner parts, high-end appliance components, and precision architectural parts. As a premium Galvalume steel coil, it combines outstanding formability, long-term corrosion resistance, high heat reflectivity, and cost efficiency, solving the core pain points of customers in processing difficulty, short service life, and unstable quality.

• AZ150: Total coating weight 150 g/m² (both sides) ≈ 75 g/m² per side; single-side thickness ≈ 20 μm. Standard commercial grade, balanced performance and cost.

• AZ180: Total coating weight 180 g/m² (both sides) ≈ 90 g/m² per side; single-side thickness ≈ 24 μm. Enhanced corrosion resistance for moderate industrial/humid environments.

• AZ200: Total coating weight 200 g/m² (both sides) ≈ 100 g/m² per side; single-side thickness ≈ 26 μm. Heavy-duty grade, maximum protection for coastal, heavy industrial, or highly corrosive environments.

Key Takeaway: For normal atmospheric environments, AZ150 is cost-effective; for industrial/humid regions, AZ180 is recommended; for coastal/heavy industrial areas, AZ200 is the safest choice to avoid early corrosion failure.

1. Eliminate Processing Cracking – Ultra High Formability

 

Customer Concern: "Will the coil crack during deep drawing or complex stamping?"

 

Solution: DC54D substrate has yield strength 140–220 MPa, elongation ≥34%, the highest in DC grades. It withstands extreme deep drawing, sharp bending, and complex stamping without cracks, ensuring zero scrap rate for precision components.

2. Avoid Premature Rust – 3–8x Longer Life Than GI

 

Customer Concern: "Will it rust quickly in outdoor or humid environments?"

 

Solution: The 55% Al-Zn-Si coating provides dual protection: aluminum forms a dense barrier against moisture/oxygen, while zinc offers sacrificial protection for cut edges/scratches. Even AZ150 lasts 10+ years outdoors, outperforming galvanized steel (GI) by 3–8 times.

3. Resist High Temperature & Fading – Up to 315°C Heat Resistance

 

Customer Concern: "Will the coating peel or discolor under high heat?"

 

Solution: DC54D+AZ withstands continuous high temperature up to 315°C without peeling, cracking, or discoloration. Ideal for oven parts, solar frames, and high-temperature equipment components.

4. Perfect Surface Quality – No Spangle Defects, Easy to Paint

 

Customer Concern: "Is the surface smooth enough for painting or visible parts?"

 

Solution: Smooth, bright silver-white surface with uniform spangle, no scratches, no oxidation spots. It has excellent paint adhesion and can be directly painted or used as PPGI/PPGL substrate without pre-treatment.

Automotive: Inner panels, door frames, chassis parts, fuel tanks, and complex stamped components.

Home Appliances: Refrigerator back panels, air conditioner casings, oven parts, and electronic housings.

Construction: High-end roofing, wall panels, ceiling panels, and architectural decorations.

Renewable Energy: Solar panel frames, wind turbine components, and energy storage system parts.

Industrial: HVAC systems, warehouse panels, and industrial equipment casings.

Q1: What is the difference between DC53D+AZ and DC54D+AZ?

A1: DC54D has lower yield strength (140–220 MPa) and higher elongation (≥34%) than DC53D, offering better ultra-deep drawing performance for more complex components.

Q2: Can DC54D+AZ be used for outdoor roofing?

A2: Yes. All AZ grades (150/180/200) are designed for outdoor use. AZ200 is recommended for coastal areas to resist salt spray corrosion.

Q3: What is the standard thickness and width range?

A3: Thickness: 0.2–2.5 mm; Width: 900–1250 mm (customizable 600–1500 mm).

Q4: Does the coil support custom coating mass?

A4: Yes. We provide AZ40–AZ200 coating mass customization to match your exact application environment.

Q5: Is DC54D+AZ recyclable?

A5: 100% recyclable, reducing carbon footprint and aligning with global sustainability standards.

Q6: What surface treatments are available?

A6: Chromated, non-chromated, anti-fingerprint, slight oiled, or dry surface.

Q7: What is the standard coil weight and inner diameter?

A7: Coil weight: 3–8 tons; Inner diameter: 508 mm or 610 mm (customizable).

Q8: Do you provide third-party inspection reports?

A8: Yes. We support SGS, TÜV, and BV third-party quality inspections as required.

DC54D+AZ Galvalume Steel Coil is your ultra-safe, high-performance, and cost-effective choice for complex forming and long-term durability projects. Whether you need AZ150 standard grade, AZ180 enhanced grade, or AZ200 heavy-duty grade, we deliver strict quality control, flexible customization, and global on-time delivery.

Don't risk premature corrosion or processing failure-contact GNEE STEEL today!Our professional team will reply to your inquiry within 24 hours, provide the latest price list, technical data sheet, and free sample, and tailor a solution that perfectly matches your project requirements.

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