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High strength Seamless Pipe S355NH and Seamless tube S355NLH
Source:Xin Steel Industry Date:2021/10/27
High strength Seamless Pipe S355NH and Seamless tube S355NLH,seamless pipe S355NLH owns the minimum yield strength at 355 Mpa for nominal thickness equal and belows 16mm,and tensile strength within 470-630 Mpa.High strength seamless pipe S355NLH shall be done impact test at -50 Degree centigrade with minimum impact energy 27J.Seamless pipe S355NH shall be done impact test at -20 Degree centigrade.N means done Normalized heat treatment or Normalized rolling.
In specification EN 10210,there are relative fine grain steel grades includes S275NH seamless pipe,S275NLH seamless tube,S460NH seamless pipe,S460NLH seamless tube,S355NH seamless pipe,S355NLH seamless pipe,and non-alloy structural steel grades S235JRH seamless pipe,S275J0H seamless pipe,S275J2H seamless pipe,S355J0H seamless tube,S355J2H seamless pipe.
Comparasion with EN 10210 seamless pipe S355NH and seamless tube S355NLH:
|
S355NH S355NLH |
Chemical composition: Heat Analysis Max% | ||||||||||||||
|
Standard |
Grade |
C |
Mn |
P |
S |
Si |
Cu |
Nb |
Ti |
Cr |
Ni |
Mo |
Alt min. |
V |
N |
|
EN 10210 |
S355NH |
0.20 |
0.9-1.65 |
0.035 |
0.03 |
0.50 |
0.35 |
0.05 |
0.03 |
0.30 |
0.50 |
0.10 |
0.02 |
0.12 |
0.015 |
|
EN 10210 |
S355NLH |
0.18 |
0.9-1.65 |
0.03 |
0.025 |
0.50 |
0.35 |
0.05 |
0.03 |
0.30 |
0.50 |
0.10 |
0.02 |
0.12 |
0.015 |
|
Mechanical Properties: |
Thickness |
Yield strength |
Tensile strength | ||||||||||||
|
Mpa Min. |
Mpa | ||||||||||||||
|
EN 10210 |
S355NH |
T≤16 |
355 |
470-630 | |||||||||||
|
EN 10210 |
S355NLH |
T≤16 |
355 |
470-630 | |||||||||||