Acidur 4404 +AT

Nombres alternativos y comerciales
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

Los datos sobre este material han sido proporcionados por Deutsche Edelstahlwerke Specialty Steel (DEW).

A menos que se indique lo contrario, todas las medidas corresponden a condiciones de temperatura ambiente. A menos que se indique lo contrario, se utilizan las unidades del SI.
Las normas armonizadas son similares a uno o varios estándares del proveedor. Es posible que algunas normas armonizadas se ajusten al estándar original, mientras que otras pueden quedar fuera de su alcance.

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Propiedades

General

PropertyValue

Densidad

8 g/cm³

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Medidas

PropertyValueComment

Diámetro

250 mm

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max.

Mecánica

PropertyTemperatureValueComment

Charpy impact energy, V-notch

100 J

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Dureza Brinell

215 [-]

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Dureza Rockwell C

22 [-]

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Elongación

30 %

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A5 | Transverse

40 %

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A5

Límite elástico

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

Módulo elástico

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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Resistencia a la tracción

500 - 700 MPa

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Aplicaciones térmicas

PropertyTemperatureValueComment

Calor específico

500 J/(kg·K)

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Coeficiente de dilatación térmica

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

Conductividad térmica

15 W/(m·K)

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Eléctrico

PropertyValue

Resistividad eléctrica

7.5e-07 Ω·m

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Chemical properties

PropertyValue

Azufre

0.03 %

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Carbono

0.03 %

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Cromo

16.5 - 18.5 %

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Fósforo

0.045 %

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Hierro

Balance

Manganeso

2 %

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Molibdeno

2 - 2.5 %

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Nitrógeno

0.1 %

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Níquel

10 - 13 %

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Silicona

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.