9421 QualitySheet Specification

9421 Quality Sheet Specification

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AlternativesThere is no alternative to this sheet.

Flat / Plate

Heavy plate products are obtained by rolling semi-finished products with a rectangular cross-section (slab) produced by the continuous casting method to a specific temperature, with thicknesses ranging from 6.00 to 200.00 mm and widths ranging from 1000 to 3600 mm.

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Chemical Composition (%)

Standard EquivalentErdemir Grade NoCmax.Mnmin.Mnmax.Pmax.Smax.Simax.Nmax.Crmax.Momax.Nimax.Vmax.Nbmax.Timax.Cumax.Ceq+C+Buyuk+012max.
StandardQuality
EN 10025-3:2019S420NL94210.201.001.700.0250.020.600.0250.300.100.800.200.050.050.550.48
  1. The chemical composition of the steel contains sufficient amounts of nitrogen-binding elements, the minimum Al value does not apply.
  2. CEV (IIW) % = C + Mn / 6 + (Cr + Mo + V) / 5 + (Ni + Cu) / 15
  3. The maximum carbon equivalent (CEV) may be increased by 0.02% for Si ≤ 0.04% and by 0.01% for Si ≤ 0.25%.
  4. Production is carried out—subject to consultation—using special manufacturing conditions for thicknesses up to a maximum of 40 mm.
  5. Normalizing Rolling Method

Mechanical Properties

Standard EquivalentErdemir Grade NoRe [N/mm2] t(thickness, mm)Impact
StandardQuality
16.01≤t≤4040.01≤t≤60Temperature ( ° C)KVC J min.
EN 10025-3:2019S420NL9421400 min.390 min.-5027
  1. Tensile test values apply to "transverse" test pieces
  2. The bending test is performed on an "optional" basis.
  3. Impact tests are not performed on products with a thickness of less than 6 mm.