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Bhushan Galume Specifications |
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| Bhushan Galume | Bhushan Rainbow Plus |
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| TECHNICAL DATA SHEET FOR GALUME PRODUCTS |
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| Parameters |
Technical details/specifications/Stds |
Product name |
BHUSHAN GALUME |
Reference standard |
ASTM A 792/A 792M |
Other ref: standards |
En 10326/En 10327, AS 1397, JIS G 3321 |
Chemical composition (base metal) |
Low carbon steel
%C: 0.12 max, %Mn: 1.2max,
%S: 0.03 max, %P:0.03 max |
Strip thickness mm |
0.20 to 1.5 (< 0.20 & above 1.5 in special cases) |
Strip widths mm |
900 to 1250 |
Chemical composition (Coating) |
55% Al-Zn alloy with 1.6 % Si. |
Test method for Coating mass gms/m2 determination for the single spot and triple spot test |
ASTM A 90/A 90M |
Grade designation |
Gr 50/ Gr 80/CS types (A, B ) |
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 |
% Elongation |
As per ASTM std |
Coating mass gms/m2 Coating class |
70 to 165
AZM 150/165 as per ASTM std |
Surface condition/treatment |
Spangle skin passed- Surface Chrome Passivated & oiled/Resin coated Surface treatment chemicals from M/s Henkel Chembond. |
Testing of mech properties |
ASTM A 924/A 924M |
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. |
Resistance to corrosion -Salt spray life Min Hrs (ASTM B 117) |
1000 HRS, corrosion 5 % (max) for Acrylic coated. |
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. |
Product certification |
All products are accompanied with MTC and packing list. |
Quality System |
ISO 9001 - 2000 |
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