P355NL2,P355NL2 steel plate,P355NL2 steel sheet shall be done low temperature impacting test under minus 50 centi degree.The normal mill test certificate for P355NL2 boiler steel plate shall be issued according to EN 10204 3.1B.The original mill test certificate for each steel plate shall be followed with our plates when delivery.On this quality certificate,it must be indicate the Heat No. Batch No.Specifications,Unit weight,Total weight,Chemical compositions,Mechnical property (Yield strength values and tensile strength values) and other additional technical testing and velues.
♦ High tension test
♦ Low temperature impacting test
♦ Simulated post-welded heat treatment (PWHT)
♦ Ultrasonic test under EN 10160,ASTM A435,A577,A578
♦ Issued Orginal Mill test certificate under EN 10204 FORMAT 3.1/3.2
♦ Shot blasting and Painting,Cutting and welding as per end user’s demands
►Mechnical property for P355NL2 steel plate:
Thickness(mm) | Yield strength (≥Mpa) | Tensile strength (Mpa) | Elongation in ≥,% |
T≤16 | 355 | 490-630 | 22 |
16<T≤40 | 345 | ||
40<T≤60 | 335 | ||
60<T≤100 | 315 | 470-610 | 21 |
100<T≤150 | 305 | 460-600 | |
150<T | 295 | 450-590 |
►Chemical composition for P355NL2 steel plate (Heat Analysis Max%)
Main chemical elements composition of P355NL2 steel plate | |||||||
C | Si | Mn | P | S | Al (total) | N | Cr |
0.18 | 0.50 | 1.10-1.70 | 0.020 | 0.010 | ≥0.020 | 0.012 | 0.30 |
Cu | Mo | Nb | Ni | Ti | V | Nb+Ti+V | |
0.30 | 0.08 | 0.05 | 0.50 | 0.03 | 0.10 | 0.12 |