Structure Galvanized Steel usually included two types. One is: cold rolled coil based plate, another one is Hot rolled coil based plate. Cold Rolled Hot-Dipped Galvanized Steel’s thickness range is usually from 0.4-2.0mm.Hot Rolled Hot-Dipped Galvanized Steel’s thickness range is from 1.8-5.0mm.
They are mainly used for Structure Budiling Construction,Solar Energy Equipment, Auto Parts, Household Appliances, Machinery etc. The Character of Structure Galvanized Steel is strong corrosion resistance, good surface quality, beneficial to deep processing. Hereby we list some main grade of it with Yield Strength (Y.S-MPA)/Tensile Strength(T.S-MPa)/Elongation(%).
Structure Galvanized Steel Mechanical Property
En Standard:
S220GD+Z: T.S: ≥ 220 Y.S: ≥ 300 Elongation ≥ 20
S250GD+Z: T.S: ≥ 250 Y.S: ≥ 330 Elongation ≥ 19
S280GD+Z: T.S: ≥ 280 Y.S:≥ 360 Elongation ≥ 18
S320GD+Z: T.S: ≥ 320 Y.S:≥ 390 Elongation ≥ 17
S350GD+Z: T.S: ≥ 350 Y.S:≥ 420 Elongation ≥ 16
S390GD+Z: T.S: ≥ 390 Y.S:460-620 Elongation ≥ 15
S450GD+Z: T.S: ≥ 450 Y.S:500-700 Elongation ≥ 14
(When the thickness is less than or equal to 0.7mm and greater than 0.5mm,the minimum value for elongation is reduced by 2 units; For thickness less than or equal to 0.5mm,the minimum value is reduced by 4 units.)
GB Standard:
SGC340: T.S: ≥ 245 Y.S:≥ 340 Elongation ≥ 20
SGC400: T.S: ≥ 295 Y.S:≥ 400 Elongation ≥ 18
SGC440: T.S: ≥ 335 Y.S:≥ 440 Elongation ≥ 18
SGC490: T.S: ≥ 365 Y.S:≥ 490 Elongation ≥ 16
ASTM Standard:
SS230: T.S:≥ 230 Y.S:≥ 310 Elongation ≥ 20
SS255: T.S:≥ 255 Y.S:≥ 360 Elongation ≥ 18
SS275: T.S:≥ 275 Y.S:≥ 380 Elongation ≥ 16
SS340 (class1) T.S:≥ 340 Y.S:≥ 450 Elongation ≥ 12
SS340 (class4) T.S ≥ 340 Y.S:≥ 410 Elongation ≥ 12
Specification
Size: 0.4-5.0mmX1000-1500XC
Zinc Coating: 80-270g/m2
Coating Finish: Regular spangle, Minimum spangle, Zero spangle
Surface Treatment: Oiling, Chromated, Chromated + Oiling, antifinger print Cr free Chromated, Cr free Chromated + Oiling, Cr free antifinger print
Gobic Exporting Update
Rcently, Gobic successfully exported the four grades of structure galvanized steel from China: SGC440、SGC490、S390GD+Z、S450GD+Z. If you have any inquires regarding above grade, please fill up on-line inquiry system. We will make offer as soon as possible after receive your requirement. Thank you so much.
