What is DC01 galvanized steel material?
DC01 galvanized steel is a cold-rolled low-carbon steel plate with a hot-dip galvanized surface. It combines the easy processing of low-carbon steel with the anti-rust ability of the zinc layer. It is widely used in home appliances, construction and general industrial fields.
Galvanizing standards: GB/T 2518 (China), EN 10346 (European standard).
Composition characteristics: low carbon (C≤0.12%), low alloy (Mn≤0.60%), high plasticity.
Zinc layer classification and use
The zinc layer of DC01 galvanized steel is usually divided according to the single-sided zinc coating amount (g/m²)
|
Zinc layer code |
Weight of single-sided zinc layer (g/m²) |
Typical home appliance applications |
Applicable environment |
|
Z40 |
40 |
Internal structural parts of low-end appliances (such as brackets and back panels) |
Dry environment, short-term rust prevention |
|
Z60 |
60 |
Washing machine shells, refrigerator side panels, microwave oven shells |
General humidity environment (home use) |
|
Z80 |
80 |
Air conditioner shells, water heater tanks, and some components of dishwashers |
High humidity or water vapor contact environment |
|
Z100+ |
≥100 |
High-end home appliances (such as dishwasher tanks and washing machine drums) |
High humidity, corrosive environment |
How to improve the corrosion resistance of DC01?
Upgrade the zinc layer (such as Z120→Z200).
Surface coating (PE/PVDF coating) or switch to galvanized zinc (AZ150)
Can DC01 galvanized steel be welded?
Yes, but the current needs to be controlled (zinc layer evaporation can easily cause pores). Laser welding or gas shielded welding can be used.
DC01 galvanized steel coil surface treatment
The surface treatment of DC01 steel also affects the corrosion resistance and appearance of home appliances.
|
Surface treatment |
Features |
Applicable scenarios |
|
Conventional galvanizing (Z) |
Basic anti-rust, low cost |
Internal structural parts (such as brackets, back panels) |
|
Galvanizing + passivation (ZF) |
Anti-white rust, extended storage period |
Washing machine shells, refrigerator side panels |
|
Galvanizing + fingerprint resistance (NF) |
Anti-fingerprint, suitable for touch operation |
High-end panels (such as oven control areas) |
|
Galvanizing + oiling (ZO) |
Short-term anti-rust, requires subsequent cleaning |
Temporary protection, degreasing is required before processing |
