YK GI ZincCoat® steel SGCH is hot-dipped galvanised steel with a uniform minimize spangled surface suitable for broad range of roll-forming and structural usage.
Roll-formed structural sections, floor decking, rainwater goods, steel framing, cladding and etc.
Steel Base Typical Typical maximum, %
(Basis 0.50mm thick)
Yield strength MPa 500-650 Carbon (C) ~0.15
Tensile strength, MPa 570-700 Phosphorus (P) ~0.40
Elongation on 80mm, % 2-11 Manganese (Mn) ~0.50
Hardness, HRB 70-85 Sulphur (S) ~0.05
Normal 1= Limited to 5= excellent NR=Not Recommend
Coating Class Z08, Z10, Z12, Z15, Z18, Z22 Bending 3
Surface Finish Spangled Drawing NR
Surface Treatment Passivated Pressing NR
Tolerance class* Roll-forming 3
Thickness AT Lock-forming 2
Width AW Welding 5
Flatness AF Painting (pre-treament) 5