444 – UNS S44400

444 – UNS S44400

(South America offer) A molybdenum-containing chromium Ferritic Stainless Steel stabilised with titanium and niobium.

Main features

Very good resistance to pitting corrosion in chloride media (outperforms 304L (18-9L) and 316L (18-11ML) grades); not sensitive to either stress cracking or intergranular corrosion; low toughness at transition temperatures (even in welded zones); good drawability and weldability; higher thermal conductivity higher and lower thermal expansion coefficient than austenitic grades. Delivered by Aperam South America.

Applications

  • Agrofood industry
  • Hot water tanks
  • Boilers
  • Fume ducts
  • Heat exchangers
  • Sugar and sanitary tubes
  • Photovoltaic frames
  • Solar tanks
  • Solar panels
  • Cooking and catering equipment
  • Water tanks
444 – UNS S44400

Norms

  • AISI 444
  • UNS S44400
  • IMDS ID 336837615

Chemical Composition

Typical values

  • C=0.011
  • Si=0.26
  • Mn=0.17
  • Cr=17.75
  • P=0.029
  • S=0.001
  • Mo=1.8
  • N=0.013
  • Nb=0.18
  • Ti=0.16

Alphanumerical designation X2CrMoTi18-2

Dimensional range

Coils & Sheets

  • Thickness: from 0.40 to 5.20 mm
  • Width: from 1,000 to 1,250 mm

Tubes

  • Diameter: from 31.75 to 127 mm
  • Thickness: from 1 to 3 mm

Surface finishes

  • Hot rolled & Cold rolled
  • NR1/1D, 2D, 2B, polished

According to thickness.

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