Test method for Coating mass gms/m2 determination for the single spot and triple spot test
ASTM A 90/A 90M
9.
Grade designation
Gr 50/ Gr 80/CS types (A, B )
10.
Yield strength Mpa Tensile strength Mpa
340 min for Gr 50 & 550 min for Gr 80
410 min for Gr 50 & 570 min for Gr 80
11.
% Elongation
As per ASTM std
12.
Coating mass gms/m2 Coating class
70 to 165
AZM 150/165 as per ASTM std
13.
Surface condition/treatment
Spangle skin passed- Surface Chrome Passivated & oiled/Resin coated Surface treatment chemicals from M/s Henkel Chembond.
14.
Testing of mech properties
ASTM A 924/A 924M
15.
Microstructure design
Galume structure consists of two layers of Al-Zn overlay coat and Fe containing intermetallic/alloy layer. Al gives barrier protection and Zn gives sacrificial Galvanic protection to the steel substrate.
16.
Resistance to corrosion -Salt spray life Min Hrs (ASTM B 117)
1000 HRS, corrosion 5 % (max) for Acrylic coated.
17.
Heat resistance and heat reflectivity properties.
Due to bright surface & fine spangles, excellent heat reflectivity up to 315 c, & due to high Aluminium content, Galume has heat (oxidizing) resistance up to > 320 c without discoloration and without impairment of its alloy coating.
18.
Product certification
All products are accompanied with MTC and packing list.
