Grade 300
Corresponding Standard AS /NZS 3678-2016
Structural steel - Hot-rolled plates, floorplates and slabs
Classification Alloy Steel
300 Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni Cu Mo Ti V Nb Al More
Minimum Value - - - - - - - - - - - - - Nb+V≤0.06;Cr+Ni+Cu+Mo≤1;Ceq≤0.44
Maximum Value 0.22 0.5 1.7 0.04 0.03 0.25 0.3 0.4 0.08 0.04 0.05 0.02 0.1
300 Mechanical Properties
condition Heat Treatment or Condition
Tensile Strength
σb
Mpa
Yield Point
σs
Mpa
Elongation or Extension Rate
δ
%
Plate and bottom plate (floor decorative plate); t≤8 Hot Rolling ≥430 ≥320 ≥21
Plate and bottom plate (floor decorative plate); 8<t≤12 Hot Rolling ≥430 ≥310 ≥21
Plate and base plate (floor pattern plate); 12<t≤20 Hot Rolling ≥430 ≥300 ≥21
Plate and base plate (floor pattern plate); 20<t≤50 Hot Rolling ≥430 ≥280 ≥21
Plate and bottom plate (floor decorative plate); 50<t≤80 Hot Rolling ≥430 ≥270 ≥21
Plates and base plates (patterned plates for flooring); 80<t≤150 Hot Rolling ≥430 ≥260 ≥21
Plates and Base Plates (Patterned Plates for Flooring); 150<t≤200 ≥420 ≥250 ≥20
300 Corresponding Standards(Same grade name, different standards)

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