What is the ST01Z material grade?
ST01Z is a commercial grade hot-dip galvanized steel sheet in the German DIN standard. It is the basic grade of galvanized steel coils and is suitable for general processing and anti-corrosion needs. Its core feature is that it is more economical than deep drawing grade materials.
ST01: Commercial grade cold rolled steel substrate
Z: Hot dipped pure zinc coating
Are ST01Z and SPCC-Z similar?
ST01Z and SPCC-Z are similar in substrate performance and coating corrosion resistance, but have the following differences：
|
Differences |
ST01Z |
SPCC-Z |
|
Formability |
General (elongation ≥ 22%) |
Slightly better (elongation ≥ 26%) |
|
Surface quality |
Finished surface (spray-friendly) |
Conventional zinc flower (average aesthetics) |
|
Coating marking |
Directly marked g/m² (such as Z60) |
Digital code (such as Z18≈60g/m²) |
|
Market adaptability |
Mainstream for European/Middle East projects |
Mainstream in the Asian market |
|
Environmental protection |
Optional chromium-free passivation |
Usually contains chromium passivation |
Interchangeable scenarios:
Non-critical structural parts (such as shelves, ordinary chassis).
Dry environment (C1-C2 corrosion level).
Non-directly interchangeable scenarios:
Parts with high forming requirements (need to verify whether the elongation of SPCC-Z is sufficient).
Export projects (need to meet customer-specified standards).
ST01Z galvanized steel is used for?
ST01Z is an economical hot-dip galvanized steel suitable for simple processing and general anti-corrosion scenarios. Its advantages are:
✔ Low cost (about 15% lower than ST02Z)
✔ Easy to purchase (common to German and European standards)
✔ Basic performance meets standards (meets ISO 12944 C1-C2 environment)
Mainly used in:
Construction field: light brackets, ventilation ducts (Z60 coating)
Home appliance industry: cabinet shell, internal bracket (Z40-Z80)
General hardware: shelves, tool boxes and other non-load-bearing parts
How to choose the coating thickness of ST01Z steel?
Dry environment: Z40 (40g/m²)
Moderate corrosion: Z60-Z80
High humidity/industrial environment: Z120+ (cost-effectiveness to be evaluated)
What are the mechanical properties of ST01Z galvanized steel coils?
✔ Medium strength (270-420MPa): Meet the needs of non-load-bearing structures.
✔ Basic formability (≥22% elongation): Suitable for shearing and simple bending, but ST02Z/ST03Z is required for complex stamping.
✔ Coating compatibility: The zinc layer does not affect the strength of the substrate, but thick coatings (Z120+) may limit the bending process.