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What is HSLA structural S355NL steel plate low alloy steel sheet steel plate

The meaning of S355NL steel plate:
S355NL steel is a structural steel grade. S means structural steel, 355 means min yield strength for thickness less 16mm expressed in Mpa, N means the delivery condition is normalized.

S355NL steel plate data sheet:

S355NL steel plate specification Thickness ≤400mm
Steel Number 1.0546
S355NL steel plate density 7.85g/m3
Deep processing Cutting, welding, bending, drilling, etc.
Third party inspection SGS, BV, Intertek, etc.
Delivery state N

S355NL steel plate chemical composition:

C Si Mn P S Nb V
0.18 0.5 0.90-1.65 0.025 0.02 0.05 0.12
Al(total) Ti Cr Ni Mo Cu N
≥0.02 0.05 0.3 0.5 0.1 0.55 0.015

S355NL steel plate mechanical properties:

Grade Thickness(mm) Min Yield (Mpa) Tensile(MPa) Elongation(%) Min Impact Energy
S355NL 8mm-100mm 235Map-275Mpa 470-630Mpa 22% -50 27J
101mm-200mm 285Mpa-315Mpa 450-600Mpa 21% -50 27J
201mm-250mm 275Mpa-285Mpa 450-600Mpa 21% -50 27J
The min impact energy is longitudinal energy

S355NL steel plate equivalent grades:

EU USA Germany France England European old Italy Spain China Sweden
EN - DIN,WNr AFNOR BS EN UNI UNE GB SS
S355NL A633 Gr.C TStE355 E355FP 50EE FeE355KTN FeE355KTN AE355KT Q345E Jan-35
A633 Gr.D   E355FR            

S355NL steel plate application:
S355NL steel plate is used in many applications, combining good welding properties with guaranteed strengths. S355NL steel plate is used above all for manufacturing highly stressed welded structures in the construction of heavy machinery, bridges and steel structures.

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