

H180BD+Z, H180BD+ZF is a kind of hot dipped  galvanized steel under the standard Q/BQB 420-2003 and Q/BQB 420-2003 H180BD+Z,  H180BD+ZF is  a kind of  bake hardening of high strength steel.
H180BD+Z, H180BD+ZF Chemical composition:
| Grade | Chemical composition % | |||||||
| C | Si | Mn | P | S | Alt | Tib | Nb | |
| H180BD+Z, H180BD+ZF | 0.04 | 0.5 | 0.7 | 0.06 | 0.025 | 0.02 | - | - | 
H180BD+Z, H180BD+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 | |||
| H180BD+Z, H180BD+ZF | 300-360 | 180-240 | 0.16 | 1.5 | 30 | 34 | 0a | 0a | 
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.
BEBON international, as a professional galvanized  steel factory, we can produce galvanized steel plate, steel coil and steel  strip according to customer’s need. 
If you have need for H180BD+Z,  H180BD+ZF, please contact with us. Our email is [email protected] and our phone is  0086-371-86011527.