Steel Coil & Coated Strip

Galvalume & Al-Zn Coated Steel

Himount supplies 55% aluminum-zinc alloy coated steel coil and sheet for roofing, wall cladding and outdoor building systems, with ASTM A792, EN 10346, JIS G3321 and AS 1397 references.

Product Overview

Galvalume & Al-Zn Coated Steel

Himount supplies Galvalume, Al-Zn coated steel coil, aluminum-zinc alloy coated sheet, slit coil and cut-to-length material for roofing, wall cladding, outdoor building envelopes, appliance backing and prepainted steel substrates. This product is different from regular zinc galvanized steel because the metallic coating is commonly based on a 55% aluminum-zinc alloy system, with coating designation, surface treatment, spangle and paint compatibility confirmed before offer.

ASTM A79255% Al-Zn alloy coated sheet
EN 10346DX51D+AZ / DX52D+AZ route
JIS G3321SGLCC / SGLCD search terms
AZ150 / AZM150Common coating mass RFQs
Galvalume & Al-Zn Coated Steel coil production stockGalvalume & Al-Zn Coated Steel coil detailGalvalume & Al-Zn Coated Steel surface close detail

Key Specifications

Product seriesGalvalume steel coil, Al-Zn coated steel sheet, aluminum-zinc alloy coated coil, slit coil and cut-to-length sheet.
Primary standardsASTM A792, EN 10346, JIS G3321, AS 1397 and project Al-Zn coated sheet specifications.
Common gradesDX51D+AZ, DX52D+AZ, DX53D+AZ, SGLCC, SGLCD and commercial or forming quality base steel references.
Coating designationsASTM RFQs commonly use AZ50 and AZ55. EN and international RFQs commonly use AZ100, AZ150 and AZ185. Australia/New Zealand RFQs may use AM100, AM125 or AM150 references under AS 1397.
Manufacturing routeContinuous hot-dip aluminum-zinc alloy coating line on suitable base steel, with surface treatment and coating mass confirmed by order.
Supply rangeThickness, width, coating mass, surface treatment, spangle, oiling, resin coating option and coil weight are confirmed by standard, mill route and order.
Order details to confirmStandard, base grade, thickness, width, coating designation, spangle, anti-fingerprint or passivation requirement, oiling, coil weight, packing, MTC and destination port.

Typical Applications

  • Roofing and wall cladding systems
  • Outdoor building panels and flashings
  • Prepainted steel coil substrate
  • Appliance backing and light fabrication
  • Long-life corrosion-protected sheet applications

Procurement Notes

  • Confirm whether the buyer requires regular galvanized zinc coating or 55% aluminum-zinc alloy coating.
  • Specify coating designation clearly, such as AZ55 under ASTM A792 or AZ150 under EN style RFQs.
  • For roofing or prepainted use, confirm surface treatment, passivation, anti-fingerprint or resin coating, paint compatibility and wet storage protection.

International Model Search Index

Common standards, models and RFQ terms

Standards and grade calls
ASTM A792 GalvalumeASTM A792 AZ55EN 10346 DX51D+AZDX52D+AZ Al-Zn coilJIS G3321 SGLCCAS 1397 AM15055% Al-Zn coated steel
Coating and order phrases
AZ50 Galvalume coilAZ55 Galvalume sheetAZ100 Al-Zn coatingAZ150 steel coilAZ185 coated sheetAZM150 / AM150 RFQanti-fingerprint Al-Zn coil
Buyer search phrases
galvalume steel coil supplierAl-Zn coated steel sheetAZ150 galvalume coil exporterASTM A792 AZ55 supplierSGLCC galvalume coilroofing galvalume sheet

These terms reflect common international RFQ language. Final supply must follow the ordered standard edition, project specification, MTC, inspection plan and agreed contract terms.

Buyer FAQ

Questions buyers usually confirm before order

Is Galvalume the same as galvanized steel?

No. Galvanized steel uses a zinc coating, while Galvalume or Al-Zn coated steel commonly uses a 55% aluminum-zinc alloy coating system. The standards, coating designations and performance profile differ.

What is the difference between AZ55 and AZ150?

AZ55 is an ASTM A792 coating designation, while AZ150 is commonly used in EN/international RFQs as a coating mass reference. They should be quoted under the buyer-selected standard.

Can Galvalume be used as prepainted steel substrate?

Yes. Al-Zn coated coil is commonly used as a substrate for prepainted roofing and wall cladding. Surface treatment, paint compatibility and coating mass should be confirmed.

What should be confirmed for roofing orders?

Confirm standard, base grade, coating designation, thickness, width, surface treatment, spangle, oiling or anti-fingerprint requirement, packing and outdoor exposure conditions.

Related Products

Products often quoted together

Hot Rolled Coil & SheetCold Rolled Coil & SheetGalvanized Steel Coil & SheetPrepainted & Roofing Steel

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