Grade S420N
European Standard Steel Grade 1.8902
Corresponding Standard EN 10025-3-2019
Hot rolled products of structural steels - Part 3: Technical delivery conditions for normalized/normalized rolled weldable fine grain structural steels
Classification Alloy Steel
S420N Chemical Element Composition Content (%)
Component C Si Mn P S ①② Cr Ni Cu Mo N Ti V Nb Al
Minimum Value - - 1 - - - - - - - - - - 0.02
Maximum Value 0.2 0.6 1.7 0.03 0.025 0.3 0.8 0.55 0.1 0.025 0.05 0.2 0.05 -
S420N Mechanical Properties
Tensile Strength
σb
Mpa
Yield Point
σs
Mpa
Elongation or Extension Rate
δ
%
t≤16 520~680 ≥420 ≥19
16<t≤40 520~680 ≥400 ≥19
40<t≤63 520~680 ≥390 ≥19
63<t≤80 520~680 ≥370 ≥18
80<t≤100 520~680 ≥360 ≥18
100<t≤150 500~650 ≥340 ≥18
150<t≤200 500~650 ≥330 ≥18
200<t≤250 500~650 ≥320 ≥18
Approximate Comparison Table Structural, pressure vessel and engineering steels
China Japan United States International Organization for Standardization Germany France European Standard Russia
GB JIS ASTM ISO DIN EN/DIN NF EN/NF EN Numerical Grade GOST
Q420D SM490A
SM490C
A255Gr.D
A633E
E420 StE420 E420R S420N
FeE420KGN
1.8902 16G2AF
S420N Corresponding Standards(Same grade name, different standards)

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