What is ST02Z galvanized steel coil equivalent to?
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Standard system |
Equivalent grades |
Key Differences |
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Chinese national standard |
DC01+Z(GB/T 2518) |
The substrate performance is the same, and the coating weight needs to correspond (such as Z60) |
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European standard EN |
DC01+Z(EN 10346) |
Completely equivalent, St02Z is the old German DIN brand |
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Japanese standard JIS |
SPCC-Z(JIS G 3302) |
The coating may contain zinc flowers, so the surface treatment needs to be confirmed |
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American standard ASTM |
ASTM A653 CS Type B |
The tensile strength is similar, but the American standard is marked with coating weight (such as G60) |
ST02Z galvanized steel is used for?
Building and decoration
Lightweight enclosure system: roof tiles, wall linings (Z80-Z120 is recommended).
Ventilation ducts: easy to process and form, galvanized layer is moisture-proof (Z60 or above is required).
Home appliance manufacturing
White appliance shell: refrigerator side panels, washing machine panels (Z60-Z80+finishing treatment).
Air conditioner internal bracket: no coating shedding after stamping (Z80 is recommended).
Automotive parts
Non-exposed structural parts: seat frames, spare tire compartment cover (Z80+passivation treatment).
Interior reinforcement: low-load parts, need to be used with anti-rust oil.
Industrial accessories
Cable tray: Z40 for dry environment, Z80 for humid environment.
Storage shelves: medium and low load layer boards (need to avoid coating scratches).
What is the difference between ST02Z steel and DX51D+Z?
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Comparison items |
ST02Z |
DX51D+Z |
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Standard system |
German DIN 1623 (old grade) |
European standard EN 10346 (new grade) |
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Substrate type |
Low carbon cold rolled steel (similar to DC01) |
Commercial grade cold rolled steel (strong versatility) |
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Tensile strength |
270-420 MPa |
270-500 MPa (wider range) |
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Elongation (A80) |
≥28% (excellent deep drawing performance) |
≥22% (standard grade) |
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Coating identification |
Z40-Z180 (such as Z60 = 60g/m² on both sides) |
ZE20-ZE180 (such as ZE60 = 60g/m² double-sided) |
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Surface treatment |
Smooth/small zinc flower |
Smoothing/conventional zinc spangles/chrome-free passivation (more options available) |
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Main application |
European projects, automotive interiors, home appliance housings |
Globally used, construction, industry, home appliances |
How to choose the coating thickness of ST02Z?
Z40 (40g/m²): Suitable for indoor dry environments (such as cabinet linings, shelves).
Z60 (60g/m²): Household appliance housings, light buildings (non-coastal areas).
Z80 (80g/m²): Automotive parts, ventilation ducts (medium corrosion environments).
Z120 (120g/m²): Coastal buildings, chemical equipment (high corrosion resistance requirements).
The thicker the coating, the stronger the corrosion resistance, but the higher the cost.
Can ST02Z galvanized steel replace stainless steel?
Alternative scenarios:
Non-load-bearing structures (such as building decorations, shelves).
Dry or slightly corrosive environments (such as home appliance housings).
Irreplaceable scenarios:
Highly corrosive environments (such as chemical equipment, seawater contact parts).
Food-grade or medical-grade applications (requiring the hygienic properties of stainless steel).