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Outokumpu 1.4509

ジェネリックファミリー： Steel - Wrought - Stainless - Ferritic • 提供元： 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).

一般的な属性

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材料ステータス

供給可能

ドキュメント

Technical Datasheet (English)

ドキュメントのダウンロード

可用性

アジア太平洋地域, アフリカ＆中東, ラテンアメリカ, 欧州, 北アメリカ

その他の属性

Applicable Specifications, Metal Type, Alloy Identification, Type Analysis, 密度, Tensile Strength (Ultimate), Tensile Strength (Yield), 0.2%, Tensile Elongation (Break), 引張係数, Mean CTE, 熱伝導性

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