Grade NM300E
Corresponding Standard GB /T 24186-2022
High Strength Abrasion Resistant Steel Plates for Construction Machine
Classification Alloy Steel
NM300E Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni Mo Ti B Al
Minimum Value - - - - - - - - - 0.0005 0.015
Maximum Value 0.23 0.7 1.6 0.02 0.01 0.8 0.6 0.4 0.05 0.006 -
NM300E Mechanical Properties
Thickness
t
mm
Tensile Strength
σb
Mpa
Elongation or Extension Rate
δ
%
Hardness
HBW
Impact Energy Absorption
KV2
J
t≤80 Transverse Tensile: 1000 Transverse Tensile: 14 Surface Hardness: 270~330HBW
Center Section Hardness: 240~330HBW
-40°C: ≥ 24 (Longitudinal)
80<t≤120 Transverse Tensile: 1000 Transverse Tensile: 14 Surface Hardness: 270~340HBW
Center Section Hardness: -
-40°C: ≥ 21 (Longitudinal)

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