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  Products > Bhushan Galume Specifications  
     
  TECHNICAL DATA SHEET FOR GALUME PRODUCTS  
     
 
S.no
Parameters
Technical details/specifications/Stds
1.
Product name BHUSHAN GALUME
2.
Reference standard ASTM A 792/A 792M
3.
Other ref: standards En 10326/En 10327, AS 1397, JIS G 3321
4.
Chemical composition (base metal) Low carbon steel
%C: 0.12 max, %Mn: 1.2max,
%S: 0.03 max, %P:0.03 max
5.
Strip thickness mm 0.20 to 1.5 (< 0.20 & above 1.5 in special cases)
6.
Strip widths mm 900 to 1250
7.
Chemical composition (Coating) 55% Al-Zn alloy with 1.6 % Si.
8.
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.
19.
Quality System ISO 9001 - 2000
 
     
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