K41 – 1.4509

K41 – 1.4509

K41 – 1.4509

Our KARA range. A 17% chromium Ferritic Stainless Steel stabilised with titanium and niobium.

Main features

Good weldability; ease of forming; suitable for surface finishing (polishing, brushing, scotch bright); good resistance to corrosion (in boiler and gas environments), pitting corrosion, and high temperature oxidation (up to 950°C); enhanced hot mechanical properties (without risk of σ phase formation at intermediate temperatures); greater thermal conductivity and lower expansion coefficient than austenitic grades.


  • Catering kitchen cladding, trolleys, work surfaces
  • Extractor hoods, hobs, oven casings and linings
  • Sinks
  • Cooking utensils
  • Lift doors and cabins
  • Construction: profiles, fascias, panels, decorative tubes
  • Domestic boiler burners
  • Condensing boilers
  • Fume pipes (chimneys)
  • Exchangers for cold ceiling
  • Welded structures under mild corrosion conditions or when components are exposed to temperatures under 950°C.
K41 – 1.4509


  • ASTM 441
  • UNS S43932/S43940
  • EN 1.4509
  • IMDS ID 336816606

Chemical Composition

Typical values

  • C=0.015
  • Si=0.60
  • Mn=0.30
  • Cr=17.80
  • Ti+Nb=0.62

Alphanumerical designation X2CrTiNb18

Dimensional range


  • Thickness: from 0.40 to 6 mm
  • Width: up to 1,500 mm

Sheets, Blanks

  • Thickness: from 0.40 to 6 mm
  • Width: up to 1,250 mm


  • Thickness: from 0.38 to 2.50 mm
  • Diameter: from 15 to 1,000 mm

Precision Strip

  • Thickness: from 0.06 to 2.5 mm
  • Width: from 3 to 700 mm

Precision Sheet

  • Thickness: from 0.20 to 2.5 mm
  • Width: from 40 to 670 mm

Flat Bars

  • Thickness: from 2 to 20 mm
  • Width: from 10 to 300 mm

Surface finishes

  • Hot rolled & Cold rolled
  • 1D, 2R, 2D, 2B, 2M, 2H
  • 2R, 2D, 2B, 2M, 2H (Precision product)

According to thickness.


Whether you need a certificate or more information, you can download all our product brochures, specifications, e-books, and related materials here.
K41 (1.4509)
EPD - CR - K41

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