GB713 Q345R Pressure Vessel and Boiler Steel Plate

Q345R owned the minimum yield strength at 345 Mpa for thin thickness and tensile strength above 510 Mpa. The best equivalent steel grade with Q345R is A516 Grade 70 in specification ASTM A516/A516M.

Q345R steel Chemical Composition (%):

Main chemical elements composition of Q345R

C

Si

Mn

P

S

Alt (min.)

0.20

0.55

1.20-1.60

0.025

0.015

0.020

Q345R steel Mechanical Property:

Thickness (mm)

Q345R

> 3 ≤ 16

> 16 ≤ 36

> 36 ≤ 60

>60 ≤ 100

>100 ≤ 150

>150

Yield strength (≥Mpa)

345

325

315

305

285

265

Tensile strength (Mpa)

510-640

500-630

490-620

480-610

470-600

Q345R steel Application:
GB713 Q345R Steel Plate are used in Pressure Vessel, Boiler, Storage Tanks and Heat Exchanger in Oil, Gas Project.