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Outokumpu 1.4509

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

Ferritic dual-stabilized stainless steel
Type X2CrTiNb18 stainless steel: EN 1.4509, UNS S43940, "AISI 441"

Stabilized both with titanium and niobium (columbium)

Applications

Tubular products for automotive industry and for process equipment like heat exchangers are the main application areas.

This material is used also in architectural applications, like elevators and door frames. Additionally, various structures in catering and household are among the application areas.

High chromium content makes this grade well suited for some selected applications for replacing standard austenitic grades.

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.

Generally welded structures show lower ductility compared to that of base material.

Forming and machining

Grade 1.4509 can be formed using typical forming processes like folding, bending, drawing, etc.

It has slightly higher proof strength than standard austenitic stainless steel grade 1.4301 / AISI 304 in combination with lower work hardening.

Due to the titanium stabilization, its r-value is higher compared to non-stabilized ferritic stainless steel.

These characteristics means excellent deep-drawability.

Corrosion resistance

Outokumpu produces grade 1.4509 typically with a chromium content of about 18 wt-%.

Titanium and niobium alloying reduces sensitivity for intergranular corrosion.

Relatively high chromium content improves resistance to crevice corrosion that is better when compared to some other ferritic stainless steels, like 1.4016.

Oxidation resistance is good up to 950°C.

In chloride containing environments 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。