Grade 18MnMo4-5
European Standard Steel Grade 1.5414
Corresponding Standard EN 10028-2-2009
Flat products made of steels for pressure purposes Part 2 Non-alloy and alloy steels with specified elevated temperature properties
Classification Alloy Steel
18MnMo4-5 Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni Cu Mo N
Minimum Value - - 0.9 - - - - - 0.45 -
Maximum Value 0.2 0.4 1.5 0.015 0.005 0.3 0.3 0.3 0.6 0.012
18MnMo4-5 Mechanical Properties
thickness
t
mm
Heat Treatment or Condition
Tensile Strength
σb
Mpa
Yield Point
σs
Mpa
Elongation or Extension Rate
δ
%
Impact Energy Absorption
KV2
J
t≤60 Normalizing and Tempering (+NT) 510~650 ≥345 ≥20 *
≥40
60<t≤150 Normalizing and Tempering (+NT) 510~650 ≥325 ≥20 ≥40
150<t≤250 Tempering (+QT) 480~620 ≥310 ≥20 ≥40
Approximate Comparison Table
China International Organization for Standardization European Standard
GB ISO EN Numerical Grade
18MnMoNbR 18MnMo4-5 18MnMo4-5 1.5414
18MnMo4-5 Corresponding Standards(Same grade name, different standards)

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