H260YD+Z, H260YD+ZF belongs to the standard Q/BQB 420-2003. Q/BQB 420-2003 H260YD+Z, H260YD+ZF hot dipped galvanized steel is a kind of ultra-low carbon high strength steel and the figure 260 means that the minimum yield strength for H260YD+Z, H180YD+ZF is 260Mpa, Z means zinc coating. The grades for ultra-low carbon high strength under the standard Q/BQB 420-2003 are H180YD+Z, H180YD+ZF, H220YD+Z, H220YD+ZF, H260YD+Z and H260YD+ZF.
H260YD+Z, H260YD+ZF Chemical composition:
Grade |
Chemical composition % |
|||||||
|
C |
Si |
Mn |
P |
S |
Alt |
Tib |
Nb |
|
|
H260YD+Z, H260YD+ZF |
0.01 |
0.1 |
0.9 |
0.08 |
0.025 |
0.02 |
0.12 |
- |
H260YD+Z, H260YD+ZF Mechanical Property:
Grade |
Tensile Strength |
Yield Strength |
n90 |
r90 |
BHb |
Elongation% min |
The coating adhesion |
|
|
min |
min |
Mpa |
(Lo=80mm b=20mm) |
<1.5 |
1.5-3.0 |
|||
|
H260YD+Z, H260YD+ZF |
380-440 |
260-320 |
0.16 |
1.4 |
- |
30 |
2a |
2a |
a: For alloy hot dipped product, the elongation minimum value can reduce 2%, r90 can reduce 0.2.
b, BH value refers to puting the sample through 2% prestrain on the temperature 170C 土5C, keeping 20 minutes, then doing tensile test under the indoor temperature, the added value of measured yield strength compared with the stress at the time of the sample 2% prestrain.
c: When coating weight of the two sides is more than 180g/m2, the bending diameter adds to 1a; For difference thick coating products, thick coating surface as the outer surface of the bending test.
Our company, BEBON international, as a global group, is engaged in galvanization industry for many years and we are very specialized in the production of the hot dipped galvanized steel Q/BQB 420-2003 H260YD+Z, H260YD+ZF. Any need for H260YD+Z, H260YD+ZF, please contact with us.