Alloy 31 / 1.4562

Alternative and trade names
Nicrofer 3127 hMo
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Description

Alloy 31 is an iron-nickel-chromium-molybdenum alloy with nitrogen addition. The alloy fills the gap between special alloyed austenitic stainless steels and nickel alloys and has good processability and weldability

Related Standards

Equivalent Materials

This material data has been provided by Hempel Special Metals.

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

General

PropertyTemperatureValue

Density

23.0 °C

8.1 g/cm³

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Mechanical

PropertyTemperatureValueComment

Elongation

23.0 °C

40 %

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min.

Impact strength, Charpy notched

-196.0 °C

1400 kJ/m²

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23.0 °C

1850 kJ/m²

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Chemical properties

PropertyValueComment

Carbon

0.015 %

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max.

Chromium

26 - 28 %

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Copper

1 - 1.4 %

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Iron

Balance

Manganese

2 %

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max.

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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max.

Silicon

0.3 %

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max.

Sulfur

0.01 %

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max.

Technological properties

Property
Application areas

Alloy 31 has been proven especially in the chemical and petrochemical industry, in ore extractors, environmental and marine engineering as well as in oil and gas production.

Certification to ISO 15156/MR 0175 to level VI for sour gas applications in the oil and gas industry

Approval for pressure vessels with operating temperatures from -196 to 550 ° C

Corrosion properties

Excellent resistance to corrosion and erosion in phosphoric acid media Excellent resistance to general and localized corrosion in Chloridoxid bleaching plants in paper production Excellent resistance in reducing and oxidizing media, as well as in boiling 67% nitric acid Excellent corrosion resistance in alkaline and acid halide media Excellent resistance to sulfuric acid in a highly concentrated form

Welding

Filler metal (for welding with alloy 31)

Welding Rod Nicrofer S 5923 – FM 59 (Material Designation 2.4607)

UNS N06059

Covered electrode 2.4609

UNS W86059

AWS A5.11: ENiCrMo-13

DIN EN ISO 14172:E Ni 6059 (NiCr23Mo16)