S450GD AZ150 Galvalume Steel Coil

 

S450GD AZ150 Galvalume Steel Coil is a high-strength hot-dip aluminum-zinc coated structural steel coil, manufactured in accordance with EN 10346 European standard. It features high yield strength, superior atmospheric corrosion resistance, excellent heat resistance and formability, widely applied in construction, automotive, home appliances and structural engineering fields.

 

• S450GD: Structural steel grade

S: Structural steel for load-bearing components

450: Specified minimum yield strength of 450MPa

GD: Special substrate for hot-dip galvalume coating with good bending and structural forming performance

 

• AZ150: Aluminum-zinc alloy coating

AZ: 55% aluminum, 43.4% zinc and 1.6% silicon alloy coating

150: Total double-sided coating weight of 150g/m2

 

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Product Name	S450GD AZ150 Galvalume metal	Thickness	0.13mm-3mm
Width	914/1000/1200/1220/1250mm, Other widths can also be customized.	Al Zinc Coating	AZ20-180g/m2
Standard	ASTM A792,ASTM A653,JIS G 3312,JIS G 3302,EN 10346,EN 10142	grade	JIS G3321 SGLCC, SGLCD, SGLCDD, SGLC400~SGLC570; SGLHC, SGLH400~SGLH540,ASTM A792M CS-B, SS230~SS550,EN10327 DX51D/52D/53D/54D/56D/57D, S220GD~S550GD
Surface treatment	Chromate Treatment, Anti-fingerprint Of colour Surface	Processing Service	Slitting,Roll Forming,Protective Film Coating,Passivation + Oiling,Pre-Painting

 

surface treatment	description
Chromate passivation (C)	A surface treatment method used after aluminum-zinc alloy coating high-strength steel sheets to reduce white rust during transportation and storage.
Chromium-free passivation (C5)	It requires the restriction of the use of surface treatments in passivation liquids that are harmful to the environment and human body, such as hexavalent chromium.
Fingerprint resistant (N)	The surface treatment method after the passivation process acts as a lubricant during processing, preventing fingerprints from staining the surface during operation and preventing premature blackening of the surface during use.
Fingerprint-resistant without chrome (N5)	Limits the content of environmentally and human-harmful hexavalent chromium in fingerprint-resistant liquids.
Oil	Surface treatment methods that reduce corrosion during long-distance transportation and long-term storage.

 

grades	Yield strength/Mpa	Tensile strength/Mpa	Elongation at break/%
DX51D+AZ	≤360	≤440	192PCS
DX52D+AZ	≤260	300-360	180PCS
DX53D+AZ	≤200	270-320	144PCS
DX54D+AZ	≤180	270-310	108PCS
S250GD+AZ	≥250	≥330	108PCS
S350GD+AZ	≥350	≥420
S450GD+AZ	≥450	≥510
S550GD+AZ	≥550	≥560
LG550GD+AZ	≥550	≥560

 

 

 

1. How do I maintain a Galvalume roof?

Maintenance is minimal. It is recommended to rinse the surface with clean water once a year to remove salt, dust, or organic debris that could trap moisture against the metal.

 

2. Is Galvalume more expensive than Galvanized?

Initially, Galvalume may have a slightly higher price point per ton than Galvanized steel, but its lower life-cycle cost (due to longevity) makes it more economical over time.

 

3. What is "Anti-Fingerprint" (AFP) Galvalume?

AFP is a thin organic coating applied over the Galvalume surface. It prevents fingerprints during installation, improves roll-forming lubrication, and adds an extra layer of protection against temporary storage stains.

 

4. Can I use Galvalume for rain gutters?

Yes, but you must ensure the entire drainage system is compatible. Avoid mixing Galvalume gutters with copper downspouts to prevent galvanic corrosion.

 

5. How is Galvalume produced?

It is produced via a continuous hot-dip process. The steel strip passes through a molten bath of the Al-Zn alloy at high speeds, ensuring a uniform and tightly bonded coating.

 

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