K33X – 1.4513

K33X – 1.4513

K33X – 1.4513

Our KARA range. The “X” means that this molybdenum-containing, niobium-stabilised, 18% chromium Ferritic Stainless Steel is ideal for exhaust applications.

Main features

Excellent resistance to corrosion (in exhaust environments), pitting corrosion (similar to austenitic 1.4301), stress and intergranular corrosion, and oxidation (up to 850°C); easy to form and weld; low thermal expansion coefficient; high thermal conductivity (resulting in a homogenous aspect).


  • Exhaust system muffler (as a substitute to the 1.4301 grade, K33X increases a muffler’s life time).
  • Various after-treatment systems (particulate filter system, Urea SCR)
K33X – 1.4513


  • ASTM 433
  • UNS S43690
  • EN 1.4513
  • IMDS ID 336837226

Chemical Composition

Typical values

  • C=0.015
  • Si=0.50
  • Mn=0.25
  • Cr=17.30
  • Mo=0.90
  • N=0.015
  • Ti=0.35

Alphanumerical designation: X2CrMoTi17-1

Dimensional range


  • Thickness: from 0.40 to 4 mm
  • Width: up to 1,524 mm acc. to thickness


  • Thickness: from 0.80 to 2 mm
  • Diameter: 8 up to 168 mm acc. to thickness


Surface aspect

  • Cold rolled
  • 2B, 2D
  • HRAP: please consult

According to forms & dimensions.


Whether you need a certificate or more information, you can download all our product brochures, specifications, e-books, and related materials here.
K33X - Exhaust

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