55% Al-Zn alloy coated steel sheet has excellent weather-proof property and appearance. In addition to the plate for top grade building outside, the volume of 55% Al-Zn alloy coated sheet with Cr-free passivation and anti-fingerprinting treatment used in home appliaance is getting bigger and bigger.
DC52D+AZ 55% AI-Zn alloy galvanized steel sheet for appliances is mainly used for cold forming. With 55% Al-Zn alloy galvanized coating, the Recommended nominal coating weight is 30/30,40/40,50/50,60/60,75/75,90/90g/m².
DC52D+AZ hot dip galvanized automotive steel mechanical performances and coating adhesiveness:
Steel grade |
Mechanical performances |
Coating adhesiveness |
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Yield strength MPa |
Tensile strength MPa |
n90 |
r=90 |
After breakage percent elongation % ≥ |
Bending center diameter in following coating weight(g/m²)c (a=plate thickness) |
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L0=80mm, b=20mm |
≤140/140 |
> 140/140~175/175 |
> 175/175 |
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Under following nominal thickness mm |
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≤0.7 |
> 0.7 |
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DC52D+AZ |
- |
270~500 |
- |
- |
20 |
22 |
0a |
1a |
2a |
Allowable reduction of min.r90 specified is by 0.2 in case of product thickness > 1.5mm.
Allowable reduction of min.r90 and n90 specified are respectively by 0.2 and 0.01 in case of product thickness<0.7mm.
For differential coated products, the thicker coating is used as outside surface in bending test.
DC52D+AZ hot dip galvanized automotive steel coating weight range:
|
Applicable surface structure |
Weight range of following coatings a g/m |
|
Zinc coating |
Zn-Fe alloy coating |
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Equally coating |
Z, X, G, GX, N, R |
40/40~225/225 |
30/30~90/90 |
Differential coating b |
N, R |
30~150(each side) |
- |
a. 50 g/m coating weight is equivalent to about 7.1 |
- Nickle alloys & Super alloys
- Stainless steel & Heat resistant steel
- Carbon steel
- Low alloy high strength steel
- High strength steel
- Boiler steel plate
- Shipbuilding steel plate
- Bridge structural steel
- Weathering steel
- Wear resistant steel
- Pipeline steel
- High carbon steel
- Alloy steel
- CQ/DQ/DDQ/CSS/HSS Grade steel
- Hot rolled steel coil
- Cold rolled steel coil
- Pickled & oiled steel coil
- Electrical steel
- Galvanized and prepainted steel
- Shipbuilding angle steel bar
- Shipbuilding bulb flat bar
- Shipbuilding L shape bars