Hot-dipped galvanized structural steels according to DIN EN 10346 / DIN EN 10143

Structural steels according to DIN EN 10346 / DIN EN 10143

Steel grade Steel grade no. DIN 17162/2 ASTM A 466 M BS2989 NF A 36-322 UNI 5783
S220GD 1.0241 - - -
S250GD 1.0242 StE250-2Z Grade B Z 25 C 250 Fe E250 G
S280GD 1.0244 StE280-2Z Grade C Z 28 C 280 Fe E280 G
S320GD 1.0250 StE320-2Z - - C 320 Fe E320 G
S350GD 1.0529 StE350-2Z Grade D Z 35 C 350 Fe E350 G
S390GD 1.0238 - - - - -
S420GD 1.0239 - - - - -
S550GD 1.0531 StE550-Z - - - -

Mechanical properties

Steel grade Yield strength ReH or Rp0,2 transverse Tensile strength Rm transverse Fracture elongation A80 transverse*
MPa MPa %
S220GD ≥ 220 ≥ 300 ≥ 20
S250GD ≥ 250 ≥ 330 ≥ 19
S280GD ≥ 280 ≥ 360 ≥ 18
S320GD ≥ 320 ≥ 390 ≥ 17
S350GD ≥ 350 ≥ 420 ≥ 16
S390GD ≥ 390 ≥ 460 ≥ 16
S420GD ≥ 420 ≥ 480 ≥ 15
S550GD ≥ 550 ≥ 560 -

Surface finish

Steel grade NA MA MB MC*
Thickness range
mm mm mm mm
S220GD 0.40 - 4.00 0.40 - 4.00 0.40 - 4.00 0.40 - 2.00
S250GD 0.40 - 4.00 0.40 - 4.00 0.40 - 4.00 0.40 - 2.00
S280GD 0.40* - 4.00 0.40* - 4.00 0.40* - 4.00 0.40* - 2.00
S320GD 0.50 - 4.00 0.50 - 4.00 0.50 - 4.00 0.50 - 2.00
S350GD 0.50 - 3.00 0.50 - 3.00 0.50 - 3.00 0.50 - 2.00
S390GD - 0.50 - 2.50 - -
S420GD - 0.50 - 2.50 - -
S550GD - 2.00 - 3.00 - -