ALLOY 1.4547 Bar

Alternative and trade names
ALLOY 1.4547, UNS S31254, 6MO, F44
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Description

The 6 Mo super austenitic steel combines moderate tensile strength and high ductility with excellent corrosion resistance in seawater and variety of industrial environment.

Related Standards

Equivalent Materials

This material data has been provided by Sverdrup Steel.

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

Properties

Dimension

PropertyValue

Diameter

10 - 400 mm

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Mechanical

PropertyTemperatureValue

Charpy impact energy, V-notch

-46.0 °C

45 J

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Elongation

23.0 °C

35 %

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Hardness, Brinell

23.0 °C

310 [-]

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Tensile strength

23.0 °C

655 - 850 MPa

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Yield strength Rp0.2

23.0 °C

310 MPa

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Chemical properties

PropertyValue

Carbon

0.02 %

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Chromium

19.5 - 20.5 %

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Copper

0.5 - 1 %

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Iron

Balance

Manganese

1 %

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Molybdenum

6 - 6.5 %

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Nickel

17.5 - 18.5 %

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Nitrogen

0.18 - 0.22 %

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Phosphorus

0.03 %

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Silicon

0.8 %

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Sulfur

0.01 %

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Technological properties

Property
Application areas

High resistance to general corrosion. Typical applications: Pumps, valves, chokes, pipework/flanges and manifolds in Oil & Gas Industry.

Corrosion properties

Typically the alloy has PREN of 42-44, which ensure that the resistance to pitting corrosion is high. High resistance crevice corrosion.

Heat Treatment

Solution annealing at min 1150°C followed by water quenching

Welding

Very good