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Alloy 31

Material: Alloy 31, N08031, 1.4562
Alloy 31, also known as VDM Alloy 31, 1.4562, UNS grade N08031, is a new type of austenitic nickel-iron-chromium alloy containing 6.5% molybdenum and nitrogen. It has strong corrosion resistance to pitting and crevice corrosion, and is even better than traditional 6-Mo steel in many applications.
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Alloy 31 Introduction:

Alloy 31, also known as VDM Alloy 31, 1.4562, UNS grade N08031, is a new type of austenitic nickel-iron-chromium alloy containing 6.5% molybdenum and nitrogen. It has strong corrosion resistance to pitting and crevice corrosion, and is even better than traditional 6-Mo steel in many applications. The 31 alloy was created by VDM Metals in Germany and fills the gap between austenitic high-alloy special stainless steel and nickel alloy.


Alloy 31 Chemical Composition

Grade

UNS

C≤

Mn≤

P≤

S≤

Si≤

Ni

Cr

Cu

Mo

N

Alloy 31

N08031

0.015

2

0.025

0.01

0.3

30.0-32.0

26.0-28.0

1.0-1.4

6.0-7.0

0.15-0.25

Typical alloy 31 chemical composition: 31Ni-27Cr-6.5Mo-0.2N.


Alloy 31 Mechanical Properties

Mechanical properties

Tensile, min, ksi[MPa]

Yield, min, ksi[MPa]

Elongation, %(min)

Alloy 31

94[650]

40[276]

40


Alloy 31 Features

  1. Excellent corrosion resistance in both acidic and alkaline environments.

  2. Excellent corrosion resistance in any high concentration of sulfuric acid.

  3. Excellent corrosion and erosion corrosion resistance in phosphoric acid media.

  4. Excellent localized and uniform corrosion resistance in chlorine dioxide bleach media.

  5. Excellent corrosion resistance in both reducing and oxidizing environments.

  6. Easy to process and weld.

  7. Certified for pressure vessels with wall temperatures between -196 and 427°C.

  8. VdTÜV certified for pressure vessels with operating temperatures from -196 to 550°C.

  9. ISO 15156/NACE MR 0175 certified for sour gas applications up to Class VI in the oil and gas industry.

  10. ASME certified for pressure vessels up to 427°C (800°F).


Alloy 31 ASTM Standards


Product

Specifications

Show

Alloy 31 Pipe Smls

ASTM B622

Alloy 31 Pipes

Alloy 31 Tube Smls

ASTM B622

Alloy 31 Tube

Alloy 31 Plate/Sheet

ASTM B625

Alloy 31 Sheet

Alloy 31 Bar

ASTM B472/ASTM B649

Alloy 31 Bars

Alloy 31 Forging

ASTM B564

Alloy 31 Forging

Alloy 31 Fittings

ASTM B366

Alloy 31 Fittings


Alloy 31 Equivalent Grades

STANDARD

WERKSTOFF NR.

UNS

EN

Alloy 31

1.4562

N08031

X1NiCrMoCu32-28-7



Alloy 31 Application

  • Components for flue gas desulfurization (FGD) plants

  • Plants for the production of phosphoric acid via the wet digestion process

  • Pipes and heat exchangers for sulfuric acids contaminated with chlorides

  • Pipes containing ocean water and brackish water, condensers and chillers

  • Pickling plants for sulfuric acid as well as nitric-hydrofluoric acid

  • Treatment of sulfuric acids from waste

  • Evaporation and crystallization of salts

  • Components for the cellulose and paper industry

  • Digestion of ores, e.g. in HIPAL (high-pressure acid leach) plants for the digestion of laterite ores

  • Mineral oil production and refineries

  • Organic acids and ester synthesis

  • Strain-hardened transport and feed pipes as well as slicklines, wirelines and flowlines in the transport of oil and gas

  • Marine scrubber / ship diesel scrubber


Alloy 31 Resource

ASTM B622 pdf review

ASTM B625 pdf review

ASTM B472 pdf review

ASTM B564 pdf review

ASTM B366 pdf review


Our Products

JN Alloy Products



FAQs
  • What Products Does JN Manufactur?
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    We supply various types of steel products, including Stainless Steel, Nickel Alloy Steel, Carbon Steel, Duplex Steel, Alloy Steel, etc. Our products includes pipes/plates/rods/coils/forgings/pipe fittings/flanges/fasteners/pipe spools, etc.
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    Yes, we can provide Free Samples to meet customers’ needs and tests, but you need pay express freight fee.
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    We can accept small orders. Whether small or big order, we are both committed to meeting our customers’ needs and providing high quality service.
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    JN is located in Wuxi, Jiangsu Province, China.
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    Yes, we accept absolutely.
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    We ship via Shanghai Port, Qingdao Port, Tianjin Port, Guangdong Port. You can choose the port freely.
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    Welcome to visit the JN factory. Before you plan to visit, please contact our sales team in advance, and they will arrange the visit time and route for you. Our factory manager will take you to visit the factory and production process so that you can better understand our production capacity and quality control. If you have enough time, we will treat you to local food.
JN Alloy is the leading stainless steel, duplex steel, and nickel alloy distributor and manufacturer.
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