Hot-dipped Galvanized Steel Coils
1. Brief
With good formability and corrosion resistance, the products can be used for interior and exterior cover panels and structural parts in construction, appliances which require formability and corrosion resistance.
2. Standard & Grade
GB/T2518,EN10346:DC(X)51D+Z, DC(X)52D+Z, DC(X)53D+Z, S220GD+Z, S250GD+Z, S280GD+Z, S320GD+Z, S350GD+Z
ASTM A653/A653M:CS A , CS B, FS A, FS B, SS230, SS255, SS275, SS340
JIS G3302:SGCC, SGCD, SGC340, SGC400, SGC440,
2011JX(15):S390GD+Z, S450GD+Z
3.Technical Delivery Conditions
Thickness:0.12~3.5mm
Width:1000~1540mm
Zinc Coating:Z40-Z275
Coating finish: Regular spangle, minimum spangle, zero spangle
Delivery conditions: Delivered as galvanized steel coils
Surface treatment:
Oiling, passivation, passivation+Oiling, antifinger print
Cr free passivation, Cr free passivation+Oiling, Cr free antifinger print
4.Mechanical properties
| Purpose | Grades | Yield strength/Re/MPa(1) | Tensile strength/Rm/MPa | Elongation/A80/%(2) |
| Commercial | DC(X)51D+Z | *** | 270~500 | ≥22 |
| Drawing | DC(X)52D+Z | 140~300 | 270~420 | ≥26 |
| Deep drawing | DC(X)53D+Z | 140~260 | 270~380 | ≥30 |
| Structure | S220GD+Z | ≥220 | ≥300 | ≥20 |
| S250GD+Z | ≥250 | ≥330 | ≥19 |
| S280GD+Z | ≥280 | ≥360 | ≥18 |
| S320GD+Z | ≥320 | ≥390 | ≥17 |
| S350GD+Z | ≥350 | ≥420 | ≥16 |
| | S390GD+Z | ≥390 | 460-620 | ≥15 |
| | S450GD+Z | ≥450 | 500-700 | ≥14 1 |
1. If the yield point is not pronounced, the value applies to Rp0.2; if the yield point is pronounced, the value applies to ReL for low carbon steel or ReH for structure steel.
2. When the thickness is less than or equal to 0.7 mm and greater than 0.5 mm, the minimum value for elongation is reduced by 2 units. For thickness less than or equal to 0.5 mm, the minimum value is reduced by 4 units. |
| Purpose | Grades | Yield strength/Re/MPa(1) | Tensile strength/Rm/MPa | Elongation /A50/% |
| Commercial | SGCC | *** | *** | *** |
| Drawing | SGCD1 | *** | ≥270 | ≥37 |
| SGCD2 | | ≥270 | ≥39 |
| Structure | SGC340 | ≥245 | ≥340 | ≥20 |
| SGC400 | ≥295 | ≥400 | ≥18 |
| SGC440 | ≥335 | ≥440 | ≥18 |
| SGC490 | ≥365 | ≥490 | ≥16 |
| If the yield point is not pronounced, the value applies to Rp0.2; if the yield point is pronounced, the value applies to ReL for low carbon steel or ReH for structure steel. |
| Purpose | Grades | Yield strength/Re/MPa | Tensile strength/Rm/MPa | Elongation/A50/% |
| Commercial | CSA | 170~380 | | ≥20 |
| CSB | 205~280 | | ≥20 |
| CSC | 170~410 | | ≥15 |
| Drawing | FSA | 170~310 | | ≥26 |
| FSB | 170~310 | | ≥26 |
| Structure | SS230 | ≥230 | ≥310 | ≥20 |
| SS255 | ≥255 | ≥360 | ≥18 |
| SS275 | ≥275 | ≥380 | ≥16 |
| SS340(class1) | ≥340 | ≥450 | ≥12 |
| SS340(class2) | ≥340 | | ≥12 |
| SS340(class4) | ≥340 | ≥410 | ≥12 |
Notes: All the specifications are adpoted from HBIS Product Brochure.
