Outokumpu 1.4521

通用系列： Steel - Wrought - Stainless - Ferritic • 提供方： 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)

一般属性

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物料形态

已商用：当前有效

文档

Technical Datasheet (English)

下载文档

可用性

北美洲, 非洲和中东, 拉丁美洲, 欧洲, 亚太地区

其他属性

Applicable Specifications, Metal Type, Alloy Identification, Type Analysis, 密度, Tensile Strength (Ultimate), Tensile Strength (Yield), 0.2%, Tensile Elongation (Break), 拉伸模量, Mean CTE, 导热系数

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加工

Find specific processing information for Outokumpu as well as general information for the Steel - Wrought - Stainless - Ferritic generic family. 注册或登录了解更多信息。