Hot-dip galvanized structural steel
With carbon structural steel or low alloy steel, pure zinc coating, zinc-iron alloy coating, S280GD+Zhot-dip galvanized steel sheet for appliances are featured with strong coating adhesiveness, high erosion-resistance, accurately controlled zinc coating thickness, high size precision, flat profile and good mechanical, processing and welding performance. They can be used for making outside and inside plates for home appliances.
S280GD is a strong, low-alloy structural steel that's widely used in construction and manufacturing. With a minimum yield strength of 280 MPa, it's tough enough for demanding structural tasks. The hot-dip zinc coating provides superior protection against corrosion, guaranteeing extended durability. Thanks to this blend of strength and protection, the S280GD is perfect for structural frames, roofing systems, and other heavy-duty applications.
S280GD+Z hot-dip galvanized steel sheet for appliance coating weight:
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Coating form |
Coating code |
Coating weight g/m² |
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Average value of three points in the single side |
Single spot per side |
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Z,ZF |
Coating with uniform thickness |
A/Ba |
A/Ba |
(0.85×A)/(0.85XB) |
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Z |
Coating with different thickness |
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a. A and B are the nominal coating weight of steel plate steel strip(g/m²) |
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Available range of S280GD+Z hot-dip galvanized steel sheet for appliances:
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Item |
Nominal mm |
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Thickness |
0.30~3.0 |
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Width |
Steel strip |
700~1830 |
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Slitting steel strip |
450~900 |
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Length |
Steel plate |
1000~6000 |
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Inside diameter of steel strip (coil) |
610/508 |
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Mechanical Properties
| Parameter | Standard Requirement | Typical Value |
| Yield Strength (Rp0.2) | ≥280 MPa | 300-330 MPa |
| Tensile Strength (Rm) | 380-500 MPa | 400-460 MPa |
| Elongation (A80mm) | ≥12% | 15-18% |
| Bendability | 180° d=0a | No cracking |
Global Standard Grade Comparison
| Property | Europe EN 10346 | China GB/T 2518 | USA ASTM A653 | Japan JIS G3302 |
| Grade | S280GD+Z | S280GD+Z | SS Grade 40 | SGCC440 |
| Yield Strength | ≥280 MPa | ≥280 MPa | ≥275 MPa | ≥440 MPa |
Properties
S280GD impresses with a balanced combination of high strength and good formability. The minimum yield strength Rp0.2 of 280 N/mm² and a characteristic tensile strength of at least 360 N/mm² ensure reliable load-bearing capacity even under dynamic load conditions. At the same time, the hot-dip galvanized surface enables an extended service life in corrosive environments.
The different cover variants offer specific advantages:
+Z (pure galvanized):
Standard corrosion protection for general conditions.
+ZF (zinc-iron):
Improved coating adhesion and increased resistance to mechanical stress.
+ZA (zinc-aluminium):
Optimized resistance in atmospheric environments.
+ZM (zinc-magnesium):
Extended protection in maritime and saline zones through passivating behavior.
+AZ (aluminum-zinc):
Combination of heat resistance and corrosion protection, ideal for high surface temperatures.
+AS (aluminum-silicon):
Especially for applications with extreme temperature influences and high corrosion loads.
S280GD is also characterized by its good weldability, homogeneous microstructure and reliable dimensional stability, which ensures precise further processing in profiling, bending and welding processes.
FAQ:
What standard does S280GD comply with?
It complies with the European standard EN 10346 for hot-dip metallic coated structural steels.
What is the material number for S280GD?
The steel number equivalent is 1.0244.
What are common coating types available on S280GD?
S280GD can be galvanized with pure zinc (+Z), zinc-iron (+ZF), zinc-aluminum (+ZA), zinc-magnesium (+ZM), aluminum-zinc (+AZ) and aluminum-silicon (+AS).
What is the minimum yield strength of S280GD?
Minimum yield strength (Rp0.2) is 280 MPa.
What is the typical tensile strength?
Minimum tensile strength is around 360 MPa.
What is the minimum elongation?
Minimum elongation A80 is typically 18 % (varies slightly with thickness).
What thicknesses are available for S280GD sheet/coils?
Thickness can range from about 0.12 mm up to 6.0 mm or more upon request.
