Galvanized Steel Coil S250GD+Z Type

 

S250GD galvanized steel coil is vital across numerous industries for its top-notch strength, corrosion resistance, and versatile applications. This article covers everything about this high-performance material, from its attributes to production and applications throughout the construction, automotive, and manufacturing industries. Whether considering an engineering project or just an exploration of materials for one's next project, knowing S250GD galvanized steel coil could help toward making informed choices and carrying out performance optimization.

 

S250GD galvanized steel coil is a high-strength material coated with zinc to prevent corrosion. It is highly in demand in construction, automotive, and manufacturing industries because it is durable, reliable, and resistant to many environmental factors. The zinc layer also extends the life of the material and acts as a smooth surface for applications such as structural components, roofing, and cladding. Combining strength and corrosion resistance, the S250GD galvanized steel coil is a versatile and cost-saving option for any professional.

 

 

Property	Value/Description
Yield Strength (MPa)	≥ 250
Tensile Strength (MPa)	≥ 330
Elongation (%)	≥ 19 (varies with thickness)
Coating Types	Zinc, Zinc-Iron, Zinc-Aluminum, etc.
Corrosion Resistance	High, due to galvanization
Ductility	Excellent, suitable for forming
Weldability	Good, no preheating required
Thickness Range (mm)	0.30 – 3.00
Applications	Construction, automotive, appliances
Standards	EN 10346, EN 10147, EN 10326

 

 

Standard	Equivalent Grade
BS	FeE250G
ASTM	Grade B (ASTM A 466 M)
GB	Q235
JIS	SGC340

 

 

Element	Maximum Content (%)
Carbon (C)	0.2
Manganese (Mn)	1.7
Silicon (Si)	0.5
Phosphorus (P)	0.1
Sulfur (S)	0.045
Nitrogen (N)	0.012
Aluminum (Al)	0.015

 

S250GD is characterized by a balanced combination of strength, ductility and corrosion resistance. The minimum yield strength Rp0.2 of 250 N/mm² and a tensile strength in the range of 360-510 N/mm² guarantee a reliable load-bearing capacity with sufficient ductility. Thanks to the hot-dip galvanized surface, the steel achieves long-lasting corrosion protection, making it resistant even in aggressive climates and industrial 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.

 

Selecting the right surface treatment for S250GD is essential for achieving optimal performance and appearance.
GNEE STEEL offers S250GD hot-dip galvanized steel with customizable spangle and surface treatment options.

 

📩 Contact GNEE STEEL for professional guidance and competitive pricing.

 

Standard	Grade	C	Si	Mn	P	S	Ti
Forcold Forming Chinese Standard	DX51D+Z	0.12	0.50	0.60	0.100	0.045	0.30
	DX52D+Z	0.12	0.50	0.60	0.100	0.045	0.30
	DX53D+Z	0.12	0.50	0.60	0.100	0.045	0.30
	DX54D+Z	0.12	0.50	0.60	0.100	0.045	0.30
	DX56D+Z	0.12	0.50	0.60	0.100	0.045	0.30
	DX57D+Z	0.12	0.50	0.60	0.100	0.045	0.30
Forcold Forming Japanese Standard	SGCC	0.15	0.50	0.80	0.050	0.030	0.025
	SGCD1 SGCD2	0.12 0.10	0.50 0.50	0.60 0.45	0.040 0.030	0.030 0.030	0.025 0.025
	SGCD3	0.08	0.50	0.45	0.030	0.030	0.025
	SGCD4	0.06	0.50	0.45	0.030	0.030	0.025
For Structure Japanese Standard	SGC340	0.25	0.50	1.70	0.200	0.035	0.025
	SGC400 SGC440	0.25 0.25	0.50 0.50	1.70 2.00	0.200 0.200	0.035 0.035	0.150 0.150
	SGC490	0.30	0.50	2.00	0.200	0.035	0.025
	SGC510	0.30	0.50	2.50	0.200	0.035	0.025
For Structure AISI Standard	S220GD+Z	0.20	0.60	0.70	0.100	0.045	0.025
	S250GD+Z	0.20	0.60	0.70	0.100	0.045	0.025
	S280GD+Z	0.20	0.60	0.70	0.100	0.045	0.025
	S320GD+Z	0.20	0.60	0.70	0.100	0.045	0.025
	S350GD+Z	0.20	0.60	0.70	0.100	0.045	0.150
	S550GD+Z	0.20	0.60	0.70	0.100	0.045	0.150

 

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