• Dongkuk CM GL Galvalume (Unilume) Steel Sheet (55% Al-Zn)
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Dongkuk CM GL Galvalume (Unilume) Steel Sheet (55% Al-Zn)

Dongkuk CM GL Galvalume (Unilume) Steel Sheet (55% Al-Zn)

Unilume aluminum-zinc alloy coated (Galvalume, GL) steel sheet: 55% aluminum, 43.4% zinc and 1.6% silicon, combining aluminum's corrosion and heat resistance with zinc's galvanic protection.

Key features

  • Salt spray: 5,500 h to visible red rust vs 300 h for galvanized (ASTM B117-73, 150 vs 275 g/m2)
  • No discoloration in sustained use at 315 C (galvanized: 230 C recommended max)
  • Heat reflexibility almost double that of galvanized steel - energy saving for unpainted roofs and panels
  • Can be painted without pre-treatment or weathering
  • Workability and formability equal to galvanized, with fewer micro-cracks at formed sections

Specifications

Coating composition Al 55%, Zn 43.4%, Si 1.6% (by weight)
Thickness range 0.3 - 2.5 mm
Width range 600 - 1,600 mm
Length (sheet) 600 - 5,000 mm
Al-Zn coating weight 90, 100, 120, 150, 200 g/m2 (24-52 um)
Surface treatment Chromated, Anti-finger printed, Oiled, Cleanlume, Lubricant Unilume, Cr-free
Coil ID 508 / 610 mm, 35 t max
Adhesion (CQ) 0T bending, lock-forming and impact: no peel-off
Applications Roofing and wall panelling, signboards, base for pre-painted steel
Source Dongkuk CM EGI_GI_GL_en.pdf, p. 7, 15-18
GL CQ (Commercial quality) Use: Commercial quality | Coating: 90-200 g/m2 | Thk: 0.3-2.5 mm
GL LFQ (Lock forming quality) Use: Lock forming quality | Coating: 90-200 g/m2 | Thk: 0.3-2.5 mm
GL DQ (Drawing quality) Use: Drawing quality | Coating: 90-200 g/m2 | Thk: 0.3-2.5 mm
GL DDQ (Deep drawing quality) Use: Deep drawing quality | Coating: 90-200 g/m2 | Thk: 0.3-2.5 mm
GL EDDQ (Extra deep drawing quality) Use: Extra deep drawing quality | Coating: 90-200 g/m2 | Thk: 0.3-2.5 mm
GL Gr-A (Structural) Use: Structural | Coating: 90-200 g/m2 | Thk: 0.3-2.5 mm
GL Gr-B (Structural) Use: Structural | Coating: 90-200 g/m2 | Thk: 0.3-2.5 mm
GL Gr-C (Structural) Use: Structural | Coating: 90-200 g/m2 | Thk: 0.3-2.5 mm
GL Gr-D (Structural) Use: Structural | Coating: 90-200 g/m2 | Thk: 0.3-2.5 mm
GL Gr-E (Structural) Use: Structural | Coating: 90-200 g/m2 | Thk: 0.3-2.5 mm
Galvalume Steel SheetDongkuk CM
10 product codes available in this family
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Dongkuk CM GL Galvalume (Unilume) Steel Sheet (55% Al-Zn)

Brand Dongkuk CM·Galvalume Steel Sheet

Available part numbers (10)

GL CQ (Commercial quality), GL LFQ (Lock forming quality), GL DQ (Drawing quality), GL DDQ (Deep drawing quality), GL EDDQ (Extra deep drawing quality), GL Gr-A (Structural), GL Gr-B (Structural), GL Gr-C (Structural), GL Gr-D (Structural), GL Gr-E (Structural)

How to order

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Product codeSpec
GL CQ (Commercial quality)Use: Commercial quality | Coating: 90-200 g/m2 | Thk: 0.3-2.5 mm
GL LFQ (Lock forming quality)Use: Lock forming quality | Coating: 90-200 g/m2 | Thk: 0.3-2.5 mm
GL DQ (Drawing quality)Use: Drawing quality | Coating: 90-200 g/m2 | Thk: 0.3-2.5 mm
GL DDQ (Deep drawing quality)Use: Deep drawing quality | Coating: 90-200 g/m2 | Thk: 0.3-2.5 mm
GL EDDQ (Extra deep drawing quality)Use: Extra deep drawing quality | Coating: 90-200 g/m2 | Thk: 0.3-2.5 mm
GL Gr-A (Structural)Use: Structural | Coating: 90-200 g/m2 | Thk: 0.3-2.5 mm
GL Gr-B (Structural)Use: Structural | Coating: 90-200 g/m2 | Thk: 0.3-2.5 mm
GL Gr-C (Structural)Use: Structural | Coating: 90-200 g/m2 | Thk: 0.3-2.5 mm
GL Gr-D (Structural)Use: Structural | Coating: 90-200 g/m2 | Thk: 0.3-2.5 mm
GL Gr-E (Structural)Use: Structural | Coating: 90-200 g/m2 | Thk: 0.3-2.5 mm

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