Acidur 4305 +AT

Alternative and trade names
Acidur 4305, 1.4305, Type 303, X8CrNiS18-9
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Description

1.4305 (X8CrNiS18-9) is a classic austenitic stainless steel with 0.15-0.3% Sulfur content for automated machining. It is used in application with temperatures below 400°C.

Related Standards

Equivalent Materials

This material data has been provided by Deutsche Edelstahlwerke Specialty Steel (DEW).

All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.

Ashby charts

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Properties

General

PropertyValue

Density

7.9 g/cm³

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Dimension

PropertyValueComment

Diameter

160 mm

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max.

Mechanical

PropertyTemperatureValue

Elastic modulus

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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Hardness, Brinell

230.0

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Tensile strength

500.0 - 750.0 MPa

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Thermal

PropertyTemperatureValueComment

Coefficient of thermal expansion

100 °C

0.0000160 1/K

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for 20°C to the mentioned temperature

200 °C

0.0000165 1/K

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for 20°C to the mentioned temperature

300 °C

0.000017 1/K

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for 20°C to the mentioned temperature

400 °C

0.0000175 1/K

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for 20°C to the mentioned temperature

500 °C

0.000018 1/K

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for 20°C to the mentioned temperature

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Specific heat capacity

500.0 J/(kg·K)

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Thermal conductivity

15 W/(m·K)

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Electrical

PropertyValue

Electrical resistivity

7.3e-07 Ω·m

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Magnetic

PropertyValue

Relative magnetic permeability

1.3 [-]

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Chemical properties

PropertyValue

Carbon

0.1

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Chromium

17.0 - 19.0 %

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Copper

1.0

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Manganese

2.0

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Nickel

8.0 - 10.0 %

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Nitrogen

0.1 %

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Phosphorus

0.045

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Silicon

1.0

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Sulfur

0.15 - 0.35000000000000003 %

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Technological properties

Property
Application areas

Armatures for medium corrosive demands, Mechanical Engineering, Automotive Industry, Electronic devices, Decorative purposes, Kitchen equipment

Corrosion properties

Corrosion resistance in acidic and chloride media is limited due to the addition of sulfur.When used in these media, pitting or cavity corrosion may occur. If higher corrosion resistance is required the use of the machining-optimized Acidur 4301 variant is recommended. Acidur 4305 is not resistant to intergranular corrosion As the PREN formula does not take into account the damaging influence of sulfur, the values given should be viewed with skepticism.

Heat Treatment

Solution annealing: 1000-1100°C (water, air) fast cooling

Hot forming

It is formable at 900-1200°C

Processing history

Solution Annealed