The Q245R pressure vessel plate
Steel plate in one of the major categories - container board
Grade: Q345R similar high strength low alloy structural steel grades with yield strength values ​​"Qu Chinese pinyin first letter of the word and pressure vessels, the" content ". For example: Q245R. Q-"QU" Hanyu Pinyin first letter. 245 - yield strength values. R: "content" Hanyu Pinyin first letter.
 Has a special composition and performance
For a pressure vessel, container board, should be selected for use, temperature, and corrosion resistance of different materials, are not the same.
    Delivery status: hot-rolled, controlled rolling, normalizing. By supply and demand side agreement and do testing.
Such as: 20R, 16MnR, 14Cr1MoR, 15CrMoR, 09MnNiDR, 12Cr2Mo1R, 16MnR (HIC), 20R (HIC). Classification above for the domestic common grades; foreign grades, such as: SA516Gr60, SA516GR70.
  Q245R steel can be added to the niobium, vanadium, titanium element, its content should be fill in the quality certificate, the sum of these three elements content shall be not more than 0.050%

Q245R commonly used specifications
The thickness of the material specifications * width * length (mm) ☎: 1599 `* 4030 * 555 king weight (tons) name
The Q245R 8 * 1500-4000 * 6000-15000M 269.365T boiler container board
Q245R 10 * 1500-4000 * 6000-15000M 182.034T boiler container board
Q245R 15 * 1500-4000 * 6000-15000M 351.235T boiler container board
Q245R 20 * 1500-4000 * 6000-15000M 215.164T boiler container board
Q245R 25 * 1500-4000 * 6000-15000M 264.593T boiler container board
Q245R 30 * 1500-4000 * 6000-15000M 346.846T boiler container board
Q245R 35 * 1500-4000 * 6000-15000M 172.046T boiler container board
Q245R 40 * 1500-4000 * 6000-15000M 423.564T boiler container board
Q245R 45 * 1500-4000 * 6000-15000M 153.927T boiler container board
Q245R 50 * 1500-4000 * 6000-15000M 268.348T boiler container board
Q245R 55 * 1500-4000 * 6000-15000M 224.823T boiler container board
Q245R 60 * 1500-4000 * 6000-15000M 492.658T boiler container board
Q245R 65 * 1500-4000 * 6000-15000M 342.716T boiler container board
Q245R 70 * 1500-4000 * 6000-15000M 364.834T boiler container board
Q245R 75 * 1500-4000 * 6000-15000M 422.296T boiler container board
Q245R 80 * 1500-4000 * 6000-15000M 536.392T boiler container board
Q245R 85 * 1500-4000 * 6000-15000M 286.328T boiler container board
Q245R 90 * 1500-4000 * 6000-15000M 284.069T boiler container board
Q245R 100 * 1500-4000 * 6000-15000M 291.426T boiler container board
The Q245R specifications not listed in the can double-length set to tie ☎: 1599 `* 4030 * 555 king of a large number of boiler container board

Q245R and 20R difference
20R \ 20G is the process standard: GB6654
Q245R is now the new grades, the standard: GB713-2008
Both is the same material, just not the same name.

The Q245R The chemical composition
Grades of the chemical elements (wt%) /%
   Q245R C Si Mn Cr Ni Mo Nb VPS Alt
         ≤ 0.20 ≤ 0.35 0.50-1.00 ≤ 0.025 ≤ 0.015 ≥ 0.020