High quality special steel supplier.Old rev.

  • Certified Company

    DNV&ABS

  • Certified Company

    ISO 9001:2008

  • R&D Production

    In China
Get a Quote

GBT Q420q

Q420q


Q420q material is China structural steel and alloy steel.

Chemical composition of Q420q, Q420q mechanical properties, Q420q datasheet, Q420q equivalent grade, Heat treatment and temperature process of Q420q.


Q420q property sheet

Q420q Spec.

Related Materials

Chemical Composition of Q420q

C Max 0.17
Si Max 0.60
Mn 1.30-1.70
P 0.025
S 0.025

Mechanical Properties of Q420q

Rp0.2 (MPa) 257 (≥)
Rm (MPa) 474 (≥)
AKV (J) 33
A (%) 23
Z (%) 24
Hardness HBW 433

Q420q shape and dimensions

Q420q Round bar: 1mm-800mm
Q420q Square bar: 10mm * 10mm-600mm *600mm
Q420q Flat bar: Thickness:8mm-800mm Width:10mm to 1500mm
Q420q Sheet or Plate: Thickness:3mm-80mm Width:1.5mm to 1500mm
Q420q Strip or Coil: Thickness:0.1mm-3mm Width:1.5mm-1500mm
Q420q Forgings: Shafts with flanks/pipes/tubes/slugs/donuts/cubes/other shapes

Our Materials

Why Our Service?

Let’s Start Work
Together

Get a Quote

Quick Contact

©Longhai Special Steel 2025