销售一部竭诚为您服务

24小时热线  18510351725
产品详情

Alloy31

Detail

Alloy31

Material grade: Alloy 31

US grade: UNS N08031

German grade: 1.4562

I. Overview of Alloy 31 (N08031)nickel-based alloy:

1. Alloy 31 (N08031) is a nitrogen-containingiron-nickel-chromium-molybdenum alloy with properties between super austeniticstainless steel and existing nickel-based alloys. It is suitable for industrialfields such as chemical and petrochemical, environmental engineering and oiland gas production.

2. Main Features:

(1) Excellent corrosion resistance in halidemedia (whether acidic or alkaline)

(2) Excellent corrosion resistance in anyconcentration of sulfuric acid

(3) Excellent corrosion resistance andcorrosion resistance in phosphoric acid medium

(4) Excellent resistance to local and uniformcorrosion in chlorine dioxide bleach media

(5) Excellent corrosion resistance in bothreducing and oxidizing environments

(6) Easy to process and weld  

(7) Certified for pressure vessels with awall temperature of -196 to 450 ° C.

II. Chemical composition: seetable 1:

Table 1                                                       %

C≤

Si≤

Mn≤

P≤

S≤

Cr≥

Ni≥

Mo≥

Cu≤

0.015

0.3

2

0.02

0.01

26.0-28.0

30.0-32.0

6.0-7.0

1.0-1.40

Other

N≤

Al≤

Ti≤

Fe≤

Co≤

V≤

W≤

Nb+Ta

0.15-0.25



Balance





III. Mechanical properties:

1. Density: 8.1g / cm3

2. Melting point: 1350-1450 ° C

3. Tensile strength: σb≥650Mpa

4. Yield strength: σb≥276Mpa

5. Elongation: δ≥40

6, Brinell hardness (HB): 220.

IV. Application fields:

Flue gas desulfurization system, pulp andpaper industry, fine chemical synthesis industry, phosphoric acid production,organic acid and ester synthesis, waste sulfuric acid recovery, seawater orbrine heat exchanger, ore treatment and laterite ore High-pressure acidfiltration technology, petroleum production and refining, pickling plant(H2SO4), sulfuric acid condenser, evaporation and crystallizing salt, acid gasenvironment (in accordance with NACE standard MR0175, level VI).

V. Specifications and Ex-factorystatus

1. Classification: Huacheng Jinyan can supplyin form of seamless pipes, steel plates, round steel, forgings, flanges, rings,welded pipes, steel strips, wire and supporting welding materials.

2.Ex-factory status: Seamless Tube: solidsolution + acid white, length can be fixed; Plate: solid solution, pickling,trimming; Welded Tube: solid solution acid white + RT% flaw detection; Forging:annealing + turning; the bar is delivered in the state of forging, surfacepolishing or lapping; the strip is delivered after cold rolling, solid solutionsoftening, and descaling; the wire is solid-dissolved and pickled in a disc orstraight strip, solid solution straight polished.


We promise to sale high-quality special alloy
Nickle base,
Cobalt base,
Soft  magnitic,
Expansion ,
Elastic and other special alloy
Stop fake and inferior products

Meet customer needs Achieve costmer goals
High-quality products
ISO9001,SGS
Products meet ASTM,ASM standard

Manufacturer offer
Best price
Good service
Timely supply
Sheet, plate, bar and other    profiles can be costumized