ALLOY 31 Plate

Alternative and trade names
ALLOY 31, ALLOY 1.4562, UNS N08031
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Description

Alloy 31 is a nickel, chromium and molybdenum stainless steel with nitrogen and cupper additions. It combines moderate tensile strength and high ductility.

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

Length

8000 mm

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Thickness

3 - 5 mm

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Width

2000 mm

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Mechanical

PropertyTemperatureValue

Charpy impact energy, V-notch

-196.0 °C

140 J

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Elongation

23.0 °C

40 %

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Tensile strength

23.0 °C

650 MPa

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Yield strength Rp0.2

23.0 °C

276 MPa

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Chemical properties

PropertyValue

Carbon

0.015 %

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Chromium

26 - 28 %

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Copper

1 - 1.4 %

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Iron

Balance

Manganese

2 %

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Molybdenum

6 - 7 %

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Nickel

30 - 32 %

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Nitrogen

0.15 - 0.25 %

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Phosphorus

0.02 %

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Silicon

0.3 %

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Sulfur

0.01 %

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Technological properties

Property
Application areas

Typical applications: Pulp and paper industry, flue gas desulphurization – FGD – systems, sea water heat exchangers, petroleum production and refining industry, mining industry – ore processing and pressure vessels with wall temperatures between -196°C to 550°C.

Corrosion properties

With excellent corrosion resistance in sulfuric acid, reducing and oxidizing media and has strong resistance to corrosion and erosion corrosion in phosphoric environment. Typically the alloy has PREN of ≥ 48, which ensure that the resistance to pitting corrosion is high.

Heat Treatment

Solution annealing at min 1150°C followed by water quenching.

Welding

Very good