+86 371 55057610 
inquiry@xsteelplate.com
■ Overview
Mo-alloy boiler steel 18MnMoNbR,18MnMoNbR steel plate,18MnMoNbR steel sheet under steel standard GB 713 is mainly used for elevated boilers and pressure vessels.Normalising plus Tempering heat treatment shall be done for boiler steel 18MnMoNbR for guarantee steel properties.
■ Full Data
Technical Requirements & Additional Services for 18MnMoNbR steel plate:
♦ High tension test
♦ Cutting and welding as per end user’s demands
♦ Simulated post-welded heat treatment (PWHT)
♦ Rolling under standard NACE MR-0175 (HIC+SSCC)
♦ Issued Orginal Mill test certificate under EN 10204 FORMAT 3.1/3.2
♦ Ultrasonic test under GB/T2970,JB4730,EN 10160,ASTM A435,A577,A578
♦ High tension test
♦ Cutting and welding as per end user’s demands
♦ Simulated post-welded heat treatment (PWHT)
♦ Rolling under standard NACE MR-0175 (HIC+SSCC)
♦ Issued Orginal Mill test certificate under EN 10204 FORMAT 3.1/3.2
♦ Ultrasonic test under GB/T2970,JB4730,EN 10160,ASTM A435,A577,A578
■ Techicals
►Mechnical property for 18MnMoNbR Pressure vessel steel plate:
| Thickness (mm) | ||
| 18MnMoNbR | > 30 ≤ 60 | >60 |
| Yield strength (≥Mpa) | 400 | 390 |
| Tensile strength (Mpa) | 570-720 | |
►Chemical composition for 18MnMoNbR Pressure vessel steel plate (Heat Analysis Max%)
| Main chemical elements composition of 18MnMoNbR steel plate | ||||||
| C | Si | Mn | P | S | Nb | Mo |
| 0.22 | 0.15-0.50 | 1.20-1.60 | 0.020 | 0.010 | 0.025-0.050 | 0.45-0.65 |
Tel：+86 371 55057610 
Fax： +86 371 5505 7611