YK GI ZincCoat® steel SGCC is hot-dipped galvanised steel with a uniform minimize spangled surface suitable for broad range of usage including lock-forming application.
Doors and windows frame, structural sections, water tanks, signboard, rainwater goods, cladding, ducting, decking, roller shutter and etc.
Steel Base Typical Typical maximum, %
(Basis 0.42mm thick)
Yield strength MPa 300-420 Carbon (C) ~0.15
Tensile strength, MPa 320-450 Phosphorus (P) ~0.40
Elongation on 80mm, % 20-31 Manganese (Mn) ~0.50
Hardness, HRB 55-65 Sulphur (S) ~0.05
Normal 1= Limited to 5= excellent NR=Not Recommend
Coating Class Z12, Z15, Z18, Z22, Z27 Bending 5
Surface Finish Spangled Drawing 2
Surface Treatment Passivated Pressing 1
Tolerance class* Roll-forming 5
Thickness AT Lock-forming 5
Width AW Welding 5
Flatness AF Painting (pre-treament) 5