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Outokumpu 1.4521

Generic Family: Steel - Wrought - Stainless - FerriticSupplied by: Outokumpu
Ferritic chromium-molybdenum dual-stabilized stainless steel
Type 18Cr-2Mo-Ti stainless steel: EN 1.4521, AISI 444

Applications
  • Boilers, water heaters and heat exchangers are typical applications for grade 1.4521. Also storage tanks and tubes are suitable applications.
  • This grade may also be used in pipes for tap water and in other use for drinking-water contexts.
  • High chromium content and addition of molybdenum makes this grade an alternative for "acid-proof" austenitic grades for some selected applications.

Welding
  • Conventional welding methods and filler materials applied to austenitic 300-series can be used. Heat input in welding should been kept in a minimum level.
  • Shielding gases should be based on Ar/He and not to contain hydrogen, nitrogen or carbon dioxide, respectively.
  • Generally welded structures show lower ductility compared to that of base material.

Fabrication
  • Grade 1.4521 can be formed using typical forming processes like folding, bending, drawing, etc.
  • It has higher minimum proof strength than standard austenitic stainless steel grade 1.4301 / AISI 304 in combination with lower work hardening behavior.
  • Due to the stabilization, the r-value is higher compared to the non-stabilized ferritic stainless steel such as 1.4016.
  • These characteristics means excellent deep-drawability.

Corrosion resistance
  • Outokumpu produces grade 1.4521 with a typical chromium content of 18 wt-% and molybdenum content of 2 wt-%.
  • Resistance to localized corrosion is close to grade 1.4404 / AISI 316 "acid-proof" austenitic.
  • Grade 1.4521 is not susceptible to chloride induced stress corrosion cracking.
  • In chloride containing solutions pitting and crevice corrosion is possible depending on various parameters like chloride concentration, temperature, pH value, redox potential, crevice geometry and others.
  • The best material performance is reached usually with the help of adequate design, correct post-weld treatment and regular cleaning during use (if applicable)
General Properties

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Material Status
Comercial: Activo
Documents
description

Technical Datasheet (English)

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Availability
África y Oriente Medio, Asia-Pacífico, Europa, Latinoamérica, Norteamérica
Other Properties
Applicable Specifications, Metal Type, Alloy Identification, Type Analysis, Densidad, Tensile Strength (Ultimate), Tensile Strength (Yield), 0.2%, Tensile Elongation (Break), Módulo de tensión, Mean CTE, Conductividad térmica
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Processing

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Where To Buy

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