Alloy 31 Pipe

Alloy 31 Pipe

Alloy 1.4562 seamless pipe, Alloy 31 N08031 welded pipe manufacturer in India

Check Alloy 31 seamless and welded pipe, UNS N08031 grade 1.4562 stainless steel pipe Price List

UNS N08031 Alloy 1.4562 Exhaust Pipes are a nickel, chromium and molybdenum grade stainless steel. This grade of Alloy 31 pipes also has additions of both nitrogen and copper. The properties of this alloy pipe are a combination of moderate tensile strength along with high ductility and excellent corrosion resistance. The Nicrofer 3127 hMo UNS S08031 Pipe demonstrates excellent resistance to corrosion in not only sulfuric acid, but also in reducing and oxidizing media.  This Alloy 31 n08031 Electropolished Pipes has strong resistance to both corrosion and erosion corrosion, especially in phosphoric acid containing environments.

Therefore the ASTM B626 UNS S08031 Polished Pipes are used in applications such as pulp and paper industry, sea water heat exchangers,  flue gas desulphurization - FGD - systems, petroleum production and refining industry as well as in mining industry, ore processing etc. In fact, this ASTM specified SB 626 UNS S08031 Thin Wall Pipe could be used in sour gas applications involving the oil and gas industry.

When the Alloy 31 pipe is used in Chloridoxid bleaching plants in paper production and if used in the presence of boiling 67% nitric acid, the alloy has Excellent resistance to both general and localized corrosion as well. Alloy 1.4562 welded pipes also has the ability to resist corrosion even in alkaline and acid halide containing media. Typically alloy grade uns n08031 seamless pipe is known to have a PREN value of ≥ 48. A higher PREN value or pitting resistance equivalent number indicates that the resistance to pitting corrosion of that particular alloy grade is high. The alloy 31 seamless pipe can be used in settings where the temperature ranges between -196°C to 550°C. Additionally, since the alloy 31 welded pipe has very good weldability properties, it can be used for welding based applications as well. Alloy 31 Pipes are very superior to alloy 625 pipe & other nickel alloy pipe and suitable for transporting extremely corrosive liquids.

Alloy 31 Pipe

Alloy 31 Pipe Price

Alloy 31 Pipe Types

Alloy 31 Seamless Pipe
Alloy 31 Welded Pipe
Nickel Alloy N08031 ERW Pipe
Nickel Alloy N08031 Schedule 40 Pipe
SCH 10 Alloy 31 UNS N08031 Pipe
Bright Annealed Alloy 1.4562 Pipe

Alloy 31 Pipes Specifications

Other trade name: advanced 6 Mo alloy

Specifications ASTM A/ASME SA213/ A249/ A269/ A312/ A358 CL. I to V, PED 97/23/EC, EN 10216-5 TC1 / TC2, AD 2000, NACE MR0175/ ISO 15156
Standard Size 1/8"NB TO 30" NB IN
Alloy 31 Seamless Pipes 1/2" NB - 16" NB
SS Alloy 31 ERW Pipe 1/2" NB - 24" NB
SS Alloy 31 EFW Pipe 6" NB - 100" NB
Outer Diameter 6.00 mm OD up to 914.4 mm OD, Sizes up to 24” NB
Thickness 0.3 - 50 mm, SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS, SCH XS, LSAW, SSAW, HSAW
Manufacturing techniques Seamless / ERW / Welded / Fabricated / CDW / EFW
Shape Round, Half Round, Square, Rectangular or Custom
Length Single Random, Double Random & Custom Length
Pipe End Plain End, Beveled End, Treaded
Test Certificate EN 10204 3.1 B

Alloy 31 round pipes

Size range

Wall thickness: 1mm- 150mm (SCH10-XXS)

Outer diameter: 6mm- 2500mm (3/8"-100")

Nickel Alloy N08031 square pipe

Size range

Wall thickness: 1mm- 150mm (SCH10-XXS)

Outer diameter: 4mm*4mm- 800mm*800mm

Alloy 31 UNS N08031 rectangular pipes

Size range

Wall thickness: 1mm-150mm (SCH10-XXS)

Outer diameter: 6mm-2500mm (3/8"-100")

Length: 4000mm, 5800mm, 6000mm, 12000mm, or as required.

Alloy 31 Pipe Sizes Available

Pipe Size O.D. Inches 5s SCH 5 10s SCH 10 20 30 40s & STD SCH 40
1/8 0.405 0.35 0.049 0.049 0.068 0.068
0.1383 0.1863 0.1863 0.2447 0.2447
1/4 0.54 0.049 0.065 0.065 0.088 0.088
0.257 0.3297 0.3297 0.4248 0.4248
3/8 0.675 0.049 0.065 0.065 0.091 0.091
0.3276 0.4235 0.4235 0.5676 0.5676
1/2 0.84 0.065 0.065 0.083 0.083 0.109 0.109
0.5383 0.5383 0.671 0.671 0.851 0.851
3/4 1.05 0.065 0.065 0.083 0.083 0.113 0.113
0.6838 0.6838 0.8572 0.8572 1.131 1.131
1 1.315 0.065 0.065 0.109 0.19 0.133 0.133
0.8678 0.8678 1.404 1.404 1.679 1.679
1 1/4 1.66 0.065 0.065 0.109 0.109 0.14 0.14
1.107 1.107 1.806 1.806 2.273 2.273
1 1/2 1.9 0.065 0.065 0.109 0.109 0.145 0.145
1.274 1.274 2.638 2.638 2.718 2.718
2 2.375 0.065 0.065 0.109 0.109 0.154 0.154
1.604 1.604 2.638 2.638 3.653 3.653
2 1/2 2.875 0.083 0.083 0.12 0.12 0.203 0.203
2.475 2.475 3.531 3.531 5.793 5.793
3 3.5 0.083 0.083 0.12 0.12 0.216 0.216
3.029 3.029 4.332 4.332 7.576 7.576
3 1/2 4 0.083 0.083 0.12 0.12 0.226 0.226
3.472 3.472 4.97 4.97 9.109 9.109
4 4.5 0.083 0.083 0.12 0.12 0.237 0.237 0.281
3.915 3.915 5.613 5.613 10.79 10.79 12.66
4 1/2 5 0.247
12.53
5 5.563 0.109 0.109 0.134 0.134 0.258 0.258
6.349 6.349 7.77 7.77 14.62 14.62
6 6.625 0.109 0.109 0.134 0.134 0.28 0.28
7.585 7.585 9.289 9.289 18.97 18.97
7 7.625 0.301
23.57
8 8.625 0.109 .109 0.148 0.148 0.25 0.277 0.322 0.322
9.914 9.914 13.4 13.4 22.36 24.7 28.55 28.55 35.64
9 9.625 0.342
33.9
10 10.75 0.134 0.134 0.165 0.165 0.25 0.307 0.365 0.365
15.19 15.19 18.65 18.65 28.04 34.24 40.48 40.48 54.74
11 11.75 0.375
45.55
12 12.75 0.156 0.165 0.18 0.18 0.25 0.33 0.375 0.406
21.07 22.18 24.2 24.2 33.38 43.77 49.56 53.53 73.16
14 14 0.156 0.188 0.25 0.312 0.375 0.375 0.437 0.593
23.06 27.73 36.71 45.68 54.57 54.57 63.67 84.91
16 16 0.165 0.188 0.25 0.312 0.437 0.375 0.562 0.75
27.9 31.75 42.05 52.36 62.58 62.58 82.77 107.5
18 18 0.165 0.188 0.25 0.312 0.437 0.375 0.562 0.75
31.43 35.76 47.39 59.03 82.06 70.59 104.8 138.2
20 20 0.188 0.218 0.25 0.375 0.5 0.375 0.593 0.812
39.78 46.05 52.73 78.6 104.1 78.6 122.9 166.4
24 24 0.218 0.25 0.25 0.375 0.562 0.375 0.687 0.968
55.37 63.41 63.41 94.62 140.8 94.62 171.2 238.1
26 26 0.312 0.5 0.375
85.6 136.2 102.6
28 28 0.312 0.5 0.625 0.375
92.26 146.8 182.7 110.6
30 30 0.25 0.312 0.312 0.5 0.625 0.375
79.43 98.93 98.93 157.5 196.1 118.6
32 32 0.312 .5 0.625 0.375 0.688
105.6 168.2 209.4 126.7 230.1
34 34 0.312 0.5 0.625 0.375 0.688
112.3 178.9 222.8 134.7 244.8
36 36 0.312 0.625 0.375 0.75
118.9 236.1 142.7 282.3
40 40 0.375
158.7
42 42 0.375
166.7
48 48 0.375
190.7
Pipe Size O.D. Inches 5s SCH 5 10s SCH 10 20 30 40s & STD SCH 40

The tables below show available shapes in Alloy 31 grade

Alloy 31 Seamless Pipes Alloy X1NiCrMoCu32-28-7 Exhaust Pipes
Nickel Alloy N08031 Welded Pipes ASTM B626 UNS S08031 Oval Pipes
1.4562 stainless steel Round Pipes Alloy 31 UNS N08031 Dairy Pipes
Alloy 31 UNS N08031 Erw Pipes 1.4562 stainless steel Polished Pipes
Alloy 1.4562 Schedule 40 Pipes ASME B36.19 SB 626 UNS S08031 Pipes
Alloy X1NiCrMoCu32-28-7 Schedule 10 Pipes Alloy 31 Boiler Pipes
ASTM B626 UNS S08031 Efw Pipes Nickel Alloy N08031 Corrugated Pipes
SB 626 UNS S08031 Drill Pipes Alloy 1.4562 Grooved Pipes
Alloy 31 Square Pipes Alloy X1NiCrMoCu32-28-7 Hydraulic Pipes
Nickel Alloy N08031 Rectangular Pipes ASTM B626 UNS S08031 Hollow Pipes
Alloy 31 UNS N08031 Welded Rectangular 1.4562 stainless steel High Pressure Pipes
Large Diameter Seamless Alloy 1.4562 Pipes SB 626 UNS S08031 Marine Exhaust Pipes
Schedule 80 Seamless Alloy 31 Pipes Alloy 31 Threaded Pipes
Schedule 40 Seamless Nickel Alloy N08031 Pipes Thin Wall Nickel Alloy N08031 Pipes

Nickel Alloy N08031 Pipes Equivalents

*PRE = Pitting Resistance Equivalent = % Cr + % (3.3 Mo) + 3ON

Comparison between corrosion temperature with other alloys

Critical pitting Critical crevice Pitting resistance
Alloy Grade corrosion temp., °C (°F) corrosion temp., °C (°F) equivalent (PRE)**
316 15 (60) <0 (32) 24
904L 45 (113) 25 (77) 37
20 15 (59) <10 (50) 29
825 30 (86) <5 (41) 32
G-3 70 (158) 40 (104) 45
1925hMo 70 (158) 40 (104) 48
625 77.5 (171.5) 57.5 (135.5) 52
33 85 (185) 40 (104) 50
30 75 (167) 50 (122) 46
31 85* (185) 65 (149) 54

Alloy X1NiCrMoCu32-28-7 Pipes Composition

Element Min Max
C - 0.0015
Si - 0.3
Mn - 2
P - 0.02
S - 0.01
Cr 26 28
Cu 1 1.4
Fe Balance
Mo 6 7
N 0.15 0.25
Ni 30 32

ASTM B626 UNS S08031 Pipes Mechanical Properties

Temper Annealed
Tensile Rm 94 ksi (min)
Tensile Rm 650 MPa (min)
R.p. 0.2% Yield 41 ksi (min)
R.p. 0.2% Yield 280 MPa (min)
Elongation (2.02 or 4D gl) 40 % (min)

Physical Properties

Specific Heat (0-100°C) 452 J.kg-1.°K-1
Thermal Conductivity 11.7 W.m -1.°K-1
Thermal Expansion 18.1 mm/m/°C
Modulus Elasticity 198 GPa
Electrical Resistivity 1.03 μohm/cm
Density 8.61 g/cm3

Nickel Alloys High Chromium Alloy 31 - UNS N08031 - X1NiCrMoCu 32 28 7 - 1.4562 Pipe

Suitable for sea water and steam at high temperatures