Acidur 4404 +AT

Alternative und Handelsbezeichungen
Acidur 4404, 1.4404, Type 316L, X2CrNiMo17-12-2
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Description

1.4404 (X2CrNiMo17-12-2) is one of the common corrosion-resistant stainless steels. Due to its molybdenum content, it offers a high degree of resistance against non-oxidising acids and halogenated media. It is easy to process and can be used at temperatures up to 550°C. It is also polishable and resistant to intergranular corrosion till 300°C.

Related Standards

Equivalent Materials

Diese Materialdaten wurden von Deutsche Edelstahlwerke Specialty Steel (DEW) zur Verfügung gestellt

Alle Daten beziehen sich auf Raumtemperatur soweit nicht anderweitig spezifiziert. SI Einheiten werden verwendt soweit nicht anderweitig spezifiziert.
Äquivalente Standards sind ähnlich zu einem oder mehreren Standards die der Anbieter angegeben hat. Manche äquivalente Standards können strikter sein oder außerhalb der Bedingungen des ursprünglichen Standards.

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Eigenschaften

Allgemein

PropertyValue

Dichte

8 g/cm³

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Abmessung

PropertyValueComment

Durchmesser

250 mm

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max.

Mechanisch

PropertyTemperatureValueComment

Charpy impact energy, V-notch

100 J

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Dehnung

30 %

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A5 | Transverse

40 %

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A5

Elastizitätsmodul

20 °C

200 GPa

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100 °C

194 GPa

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200 °C

186 GPa

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300 °C

179 GPa

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400 °C

172 GPa

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500 °C

165 GPa

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Härte, Brinell

215 [-]

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Härte, Rockwell C

22 [-]

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Streckgrenze

20 °C

200 MPa

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RP02

23 °C

235 MPa

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RP1

100 °C

165 MPa

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RP02

100 °C

200 MPa

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RP1

150 °C

150 MPa

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RP02

150 °C

180 MPa

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RP1

200 °C

137 MPa

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RP02

200 °C

165 MPa

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RP1

250 °C

127 MPa

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RP02

250 °C

153 MPa

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RP1

300 °C

119 MPa

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RP02

300 °C

145 MPa

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RP1

350 °C

113 MPa

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RP02

350 °C

139 MPa

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RP1

400 °C

108 MPa

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RP02

400 °C

135 MPa

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RP1

450 °C

103 MPa

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RP02

450 °C

130 MPa

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RP1

500 °C

100 MPa

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RP02

500 °C

128 MPa

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RP1

550 °C

98 MPa

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RP02

550 °C

127 MPa

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RP1

Zugfestigkeit

500 - 700 MPa

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Thermisch

PropertyTemperatureValueComment

Koeffizient der thermischen Ausdehnung

100 °C

1.6e-05 1/K

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for 20°C to the mentioned temperature

200 °C

1.65e-05 1/K

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for 20°C to the mentioned temperature

300 °C

1.7e-05 1/K

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for 20°C to the mentioned temperature

400 °C

1.75e-05 1/K

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for 20°C to the mentioned temperature

500 °C

1.8e-05 1/K

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for 20°C to the mentioned temperature

Spezifische Wärmekapazität

500 J/(kg·K)

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Wärmeleitfähigkeit

15 W/(m·K)

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Elektrisch

PropertyValue

spezifischer Widerstand

7.5e-07 Ω·m

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Chemical properties

PropertyValue

Chrom

16.5 - 18.5 %

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Eisen

Balance

Kohlenstoff

0.03 %

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Mangan

2 %

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Molybdän

2 - 2.5 %

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Nickel

10 - 13 %

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Phosphor

0.045 %

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Schwefel

0.03 %

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Silizium

1 %

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Stickstoff

0.1 %

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Technological properties

Property
Application areas

Chemical Industry, Pharmaceutical Industry, Food Industry, Fittings, Construction, Ship Building & Marine Structures, Petrochemistry, Automotive, Decorative Applications, Kitchen Equipment, Electronics, Aerospace, Maritime

Cold Forming

It is suitable for cold forming according to DIN EN 10263-5.

Corrosion properties

Due to the molybdenum content has a higher corrosion resistance thatn Acidur 4301 and 4307 (specially in chloride mediums). Due to its low carbon content it is resistant against intergranular corrosion according to DIN EN 3651 part 2. PREN= 23.1-28.8

Heat Treatment

Solution annealing: 1020-1120°C (water, air) fast cooling

Hot forming

It is formable at 900-1200°C

Processing history

Solution Annealed

Welding

It is weldable with or without filler material (e.g. 1.4430). The interpass temperature should not exceed 200°C. Subsequent heat treatment is not require. The resistance to intergranular corrosion is not affected by welding according to DIN EN 3651 part 2.