Specifications

BMT

0.42mm or 0.48mm

Cover

700mm

Lengths

Sheets are supplied custom cut.

Tolerance

Length: +0mm, -15mm
Cover Width: + 4mm, – 4mm

Make allowance for thermal expansion or contraction for long length roofs at sheeting ends.
The equation ΔL = α x ΔT x L gives an indication of the sheeting extent or contraction (ΔL).
α = 12 x 10-6 (coefficient of linear expansion for steel).
ΔT = temperature change in °C.
L = sheet length in mm
Mt=1.0 with the following assumptions made:

Roofs:
Cpi=+0.20, (Region A : Cpe=-0.65) (Region B : Cpe=-0.90),
Walls:
Cpi=0.20, Cpe=-0.65

Material Specification

• Next generation ZINCALUME® zinc/aluminium/magnesium alloy-coated steel complies with AS 1397:2011 G550, AM125 (550 MPa minimum yield stress, 125 g/m2 minimum coating mass)
•  COLORBOND® steel complying with AS/NZS 2728:2013 and the steel base is an aluminium/zinc/magnesium alloy-coated steel complying with AS 1397:2011. Minimum yield strengths are G550 (550MPa). Minimum coating mass is AM100 (100g/m2)
•  COLORBOND® Ultra steel designed for severe coastal or industrial environments (generally within about 100-200 metres of the source). The painting complies with AS/NZS 2728:2013 the steel base is an aluminium/zinc/magnesium alloy-coated steel complying with AS 1397:2011. Minimum yield strengths are G550 (550MPa). Minimum coating mass is AM100 (100g/m2)
•  COLORBOND® Stainless steel for severe and coastal environments. The painting complies with AS/NZS 2728:2013 and the steel base is stainless steel complying with AISI/ASTM Type 430; UNS No. S43000.

Physical Properties