Incoloy 825 Seamless Pipe Manufacturer & Supplier in Thailand

Incoloy 825 Seamless Pipes is a high-performance nickel-iron-chromium alloy pipes designed for excellent resistance to corrosion, especially in acidic and marine environments. These pipes are ideal for chemical processing, pollution control, and oil & gas industries due to their ability to withstand harsh conditions. Thaida Stainless Steel Manufacturing (Thailand) Co., Ltd., based in Chon Buri, delivers top-quality pipes with years of expertise to meet global standards. We specialize in manufacturing seamless pipes in a wide technical range sizes from ½” to 12”, wall thicknesses from SCH 10 to SCH 80, and grades like UNS N08825 / DIN 2.4858. Our products come with complete traceability, stringent quality testing, and international certifications.

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825-pipe

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What Is Incoloy 825 Seamless Pipes?

Incoloy 825 seamless pipe is a nickel-iron-chromium alloy pipe enhanced with molybdenum, copper and titanium for improved corrosion resistance and durability. As a seamless Incoloy 825 pipe, it is manufactured without any welds, ensuring consistent strength and excellent performance under pressure. These pipes deliver outstanding resistance to sulfuric and phosphoric acids, oxidation and pitting, making it reliable in both reducing and oxidizing environments. It maintains structural integrity at high temperatures and in chemically aggressive conditions. The seamless construction ensures leak-free operation and precise dimensional control, conforming to standards such as ASTM B423. Known for its strength and stability, alloy 825 pipe is a preferred solution for environments that demand corrosion protection, uniformity and long-term performance without compromise.

825-pipes

Key Features of Incoloy Alloy 825 Seamless Pipes

Incoloy 2.4858 seamless pipe key features table includes mechanical properties, corrosion resistance, and standard specifications for industrial use.

corrosion resistance

High Corrosion Resistance

Withstands aggressive chemicals and environments, offering excellent protection against acids, alkalis and chloride-induced corrosion.

Hygienic Properties

Excellent Weldability

These pipes ensure ease of fabrication and strong, leak-proof joints without compromising the alloy’s corrosion-resistant properties.

Durability and Strength

Good Strength at High Temperatures

These corrosion-resistant alloy pipes maintain mechanical integrity and performance even in elevated temperature conditions over extended periods.

Environmental Sustainability

Superior Resistance to Pitting and Crevice Corrosion

Prevents localized corrosion in areas exposed to seawater, acidic solutions, or stagnant fluids.

Versatility

Durability in Harsh Environments

These pipes are designed to perform reliably in extreme and fluctuating environments without degradation or failure.

Global Exports Expertise

Non-Magnetic

Ideal for use where magnetic interference must be avoided, ensuring stable performance in sensitive systems.

In-House Testing & Full Traceability

Formability

Incoloy 825 seamless pipes are easily formed and fabricated into custom sizes and shapes without losing its mechanical or corrosion-resistant properties.

Hygienic Properties

Low Maintenance

Offers long service life with minimal upkeep, reducing operational costs over time.

Why Choose Thaida For Alloy 825 Seamless Pipes

We are a trusted manufacturer of Alloy 825 seamless pipes, produced in Chon Buri, Thailand, with years of specialized expertise. We offer UNS N08825 / DIN 2.4858 pipes in sizes from ½” to 12” and wall thicknesses up to SCH 80, designed for demanding industrial environments. Our products are fully tested, traceable, and certified to international standards. Our ISO certification is proudly backed by our mother company, highlighting our commitment to consistent quality and reliability. With custom solutions, bulk availability, and proven performance, our preferred choice for high-quality Incoloy 825 seamless pipes.

Competitive Pricing

Competitive Pricing

Global Exports Expertise

Global Exports Expertise

Large Inventory & Fast Dispatch

Large Inventory & Fast Delivery

Custom Sizes & Finishes

Custom Sizes & Special Orders

Industry Certifications & Compliance

Industry Certifications & Compliance

Long service life in harsh conditions

Premium Materials & Strict Quality Control

After-Sales Support, Service- Technical Support

After-Sales Support & Service

In-House Testing & Full Traceability

In-House Testing & Full Traceability

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Specification of UNS N08825 Incoloy Seamless Pipes

The table includes detailed specifications including manufacturing techniques, dimensions and material grade for UNS N08825 Incoloy 825 seamless pipes.

Incoloy 825 Pipes International Specification ASTM B423
Standard Specification ASME, ASTM, AISI, AMS, JIS, EN, SAE, DIN, NF, TOCT, DS, DTD, GB
Incoloy 825 Seamless Pipes Size
  • OD: 4 to 219mm
  • Wall Thickness: 0.5 to 20mm
Incoloy 825 Alloy Pipes WT SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS, SCH XS
Nickel Alloy 825 Pipes manufacturing techniques Seamless
Werkstoff 2.4858 Incoloy Pipes End Types
  • BE : Beveled end
  • BBE : Bevel both ends
  • BLE : Bevel large end
  • BSE : Bevel small end
  • TOE / POE = Treaded One End / Plain One End
  • TOE / BOE = Treaded One End / Beveled One End
  • POE / BOE = Plain One End / Beveled One End
  • TBE = Treaded Both Ends
  • PBE = Plain Both Ends
Form Round, Square, Rectangular
Incoloy 825 Din 2.4858 Pipes Length Single Random, Double Random & Required Length End: Plain End, Beveled End, Treaded
UNS N08825 Incoloy 825 Pipes Delivery Condition Annealed and Pickled, Hot Finished, Polished, Bright Annealed, Cold Drawn
Incoloy 8825 Pipes Packing
  • Ply Wooden Boxes
  • PE Fabric Bundles
  • Steel Strips Bundled
  • Standard seaworthy export packing
  • Plastic Bags, or as required
2.4858 Incoloy Pipes Value Added Services Cut to size, thread, and groove
Stocking distributor of leading Incoloy 825 Pipes manufacturers
  • Sanyo Special Steel, Japan make Incoloy 825 Pipes
  • Schoeller Bleckmann, Austria make ASME SB 423 UNS N08825 Incoloy Seamless Pipes
  • Nippon Steel Corporation, Japan make Incoloy Alloy 825 Pipes
  • Sumitomo Metals, Japan make ASTM B423 UNS N08825 Incoloy Pipes
  • Seah Steel Corporation, Korea make Incoloy 825 Alloy Seamless Pipes
  • Kobe Special Tubes, Japan make Nickel Alloy 825 Pipes
  • Tubacex Tubos Inoxidables S.A., Spain make Incoloy N08825 Pipes
2.4858 Incoloy Pipes Dimensional Specification ANSI/ ASME B36.10, B36.19, B2.1
Marking on Incoloy UNS No 8825 Pipes
  • Specification
  • Material Grade
  • Nominal Size
  • Schedule or Wall Thickness
  • Method of Manufacturing (Seamless or Welded)
  • Heat Number
  • Manufacturer’s Name or Custom Logo - on request
Marked Pipes Sample: ASTM B423 UNS N08825 12" NB SCH 40S SEAMLESS HEAT NO. XXXX

Incoloy UNS NO 8825 Seamless Pipes Chemical Composition

 This table lists the chemical elements and their respective percentages found in Incoloy 825 seamless pipes.

Grade C Mn Si Fe S Cr Cu Ti
825 min. - - - 22.0 - 19.5 1.5 0.6
max. 0.05 1.0 0.5 - 0.015 23.5 3.0 1.2

Explore key mechanical properties such as tensile strength, yield strength and elongation of 2.4858 Incoloy 825 pipes.

1/8" IPS(.405" O.D.) 3 1/2" IPS( 4.000" O.D.)
Seamless Pipes, SCH 40, 80 Pipes, SCH 10, 40, 80, 160, XXH
1/4" IPS(.540" O.D.) 4" IPS(4.500" O.D.)
Pipes, SCH 10, 40, 80 Seamless Pipes, SCH 10, 40, 80, 160, XXH
3/8" IPS(.675" O.D.) 5" IPS( 5.563" O.D.)
Seamless Pipes, SCH 10, 40, 80 Pipes, SCH 10, 40, 80, 160, XXH
1/2" IPS(.840" O.D.) 6" IPS(6.625" O.D.)
Seamless Pipes, SCH 5, 10, 40, 80, 160, XXH Seamless Pipes, SCH 5, 10, 40, 80, 120, 160, XXH
3/4" IPS(1.050" O.D.) 8 ” IPS(8.625" O.D.)
Pipes, SCH 10, 40, 80, 160, XXH Stainless Pipes, SCH 5, 10, 40, 80, 120, 160, XXH
1" IPS:(1.315′ O.D.) 10" IPS(10.750" O.D.)
Seamless Pipes, SCH 5, 10, 40, 80, 160, XXH Pipes, SCH 10, 20, 40, 80 (.500), TRUE 80(.500)
1-1/4" IPS(1.660" O.D.) 12" IPS(12.750" O.D.)
Seamless Pipes, SCH 10, 40, 80, 160, XXH Pipes, SCH 10, 20, 40(.375), TRUE40(.406), SCH80(.500)
1-1/2" IPS(1.900" O.D.) 14" IPS(14.000" O.D.)
Seamless Pipes, SCH 10, 40, 80, 160, XXH Pipes, SCH10 (.188), SCH40 (.375)
2" IPS(2.375" O.D.) 16" IPS(16.000" O.D.)
Seamless Pipes, SCH 10, 40, 80, 160, XXH Pipes, SCH10(.188), SCH40(.375)
2 1/2" IPS(2.875" O.D.) 18" IPS (18.000" O.D.)
Seamless Pipes, SCH 10, 40, 80, 160, XXH Pipes, SCH-40 (.375)
3" IPS( 3.500" O.D.)  
Seamless Pipes, SCH 5, 10, 40, 80, 160, XXH  

Below table compare international material grade equivalents for Incoloy 825 seamless pipes across various standards and designations.

Grade UNS No Old British Euronorm GOST Japanese JIS
BS En No AFNOR
Incoloy 825 N08825 NA 16 NiCr21Mo 2.4858 NFE30C20DUM ЭП703 NCF 825

The available pipe sizes, including outer diameter and thickness, for ASTM B423 Incoloy 825 seamless pipes are mentioned.

ASTM B423 Incoloy 825 Pipes OD
mm		 Pipes WT
mm		 in. Sch Kg/m
13.72 1.65 1/4 10S 0.50
13.72 2.24 1/4 40S 0.64
13.72 3.02 1/4 80S 0.81
17.15 1.65 3/8 10S 0.64
17.15 2.31 3/8 40S 0.86
17.15 3.20 3/8 80S 1.12
21.34 2.11 1/2 10S 1.02
21.34 2.77 1/2 40S 1.29
21.34 3.73 1/2 80S 1.65
26.67 2.11 3/4 10S 1.30
26.67 2.87 3/4 40S 1.71
26.67 3.91 3/4 80S 2.23
33.40 2.77 1 10S 2.13
33.40 3.38 1 40S 2.54
33.40 4.55 1 80S 3.29
33.40 6.352) 1 160 4.30
42.16 2.77 1¼ 10S 2.73
42.16 3.56 1¼ 40S 3.44
42.16 4.85 1¼ 80S 4.53
42.16 6.352) 1¼ 160 5.69
48.26 2.77 1½ 10S 3.16
48.26 3.68 1½ 40S 4.11
48.26 5.08 1½ 80S 5.49
60.33 2.77 2 10S 3.99
60.33 3.91 2 40S 5.52
60.33 5.54 2 80S 7.60
60.33 8.742) 2 160 11.29
73.03 3.05 2½ 10S 5.35
73.03 5.16 2½ 40S 8.77
73.03 7.01 2½ 80S 11.59
88.90 3.05 3 10S 6.56
88.90 5.49 3 40S 11.47
88.90 7.62 3 80S 15.51
88.90 11.132) 3 160 21.67
101.60 3.05 3½ 10S 7.53
101.60 5.74 3½ 40S 13.78
101.60 8.08 3½ 80S 18.92
114.30 3.05 4 10S 8.50
114.30 6.02 4 40S 16.32
114.30 8.56 4 80S 22.67
114.30 13.492) 4 160 34.05
141.30 6.55 5 40S 22.10
141.30 9.53 5 80S 31.44
141.30 15.882) 5 160 49.87
168.28 3.4 6 10S 14.04
168.28 7.11 6 40S 28.69
168.28 10.97 6 80S 43.21
168.28 14.27 6 120 54.75
168.28 18.262) 6 160 68.59
219.08 8.18 8 40S 43.20
219.08 12.7 8 80S 65.63
219.08 18.23 8 120 91.30
219.08 23.012) 8 160 112.97

This chart provides approximate weight per meter for these pipes based on size and wall thickness.

NPS Outside Diameter Wall Thickness Weight Weight
in mm in mm Sched kg/Mtr Lb/ft
1/2″ 0.840 21 0.109 2.769 40 STD 1.268 0.851
0.147 3.734 80 STD 1.621 1.088
3/4″ 1.050 27 0.113 2.870 40 STD 1.684 1.131
0.154 3.912 80 STD 2.195 1.474
1″ 1.315 33 0.133 3.378 40 STD 2.501 1.679
0.179 4.547 80 STD 3.325 2.172
1 1/4″ 1.660 42 0.140 3.556 40 STD 3.385 2.273
0.191 4.851 80 STD 4.464 2.997
1 1/2″ 1.900 48 0.145 3.683 40 STD 4.048 2.718
0.200 5.080 80 STD 5.409 3.361
2″ 2.375 60 0.154 3.912 40 STD 5.441 3.653
0.218 5.537 80 STD 7.480 5.022
2 1/2″ 2.875 73 0.203 5.516 40 STD 8.629 5.793
0.276 7.010 80 STD 11.411 7.661
3″ 3.500 89 0.216 5.486 40 STD 11.284 7.576
0.300 7.620 80 STD 15.272 10.253
4″ 4.500 114 0.237 6.020 16.073 10.790
0.337 8.560 22.318 14.983
6″ 6.625 168 0.188 4.775 19.252 12.924
0.203 5.516 20.739 13.923
0.219 5.563 22.318 14.983
0.250 6.350 25.354 17.021
0.280 7.112 40 STD 58.263 18.974
0.312 7.925 31.334 21.036
0.375 9.525 37.285 25.031
0.432 10.973 80 XHY 42.561 28.573
0.500 12.700 48.719 32.708
8″ 8.625 219 0.188 4.775 25.233 16.940
0.203 5.156 27.198 18.259
0.219 5.563 29.286 19.661
0.250 6.350 20 33.308 22.361
0.277 7.036 30 36.786 24.696
0.322 8.179 40 42.352 28.554
0.375 9.525 49.216 33.041
0.406 10.312 60 53.085 35.638
0.500 12.700 80 XHY 64.627 43.388
10″ 10.750 273 0.188 4.775 31.588 21.207
0.219 5.563 36.689 24.631
0.250 6.350 20 41.759 28.035
0.307 7.798 30 51.002 34.240
0.344 8.738 56.946 38.231
0.365 9.271 40 STD 63.301 40.483
0.438 11.125 71.852 48.238
0.500 12.700 60 XHY 81.530 54.735
0.594 15.088 80 95.969 64.429
12″ 12.750 324 0.188 4.775 37.570 25.222
0.219 5.563 43.657 29.309
0.250 6.350 49.713 33.375
0.281 7.137 55.739 37.420
0.312 7.925 61.735 41.445
0.375 9.525 73.824 49.562
0.406 10.312 79.727 53.525
0.500 12.700 97.438 65.415
0.562 14.275 108.966 73.154
14″ 14.000 356 0.188 4.775 41.308 27.732
0.219 5.563 48.012 32.233
0.250 6.350 20 54.685 36.713
0.281 7.137 61.327 41.172
0.312 7.925 67.939 45.611
0.375 9.525 STD 81.281 54.568
0.438 11.125 40 94.498 63.441
0.500 12.700 XHY 107.381 72.090
0.625 15.875 132.983 89.278
16” 16.000 406 0.188 4.775 47.290 21.748
0.219 5.563 54.980 36.910
0.250 6.350 10 62.639 42.053
0.281 7.137 70.268 47.174
0.312 7.925 20 77.866 52.275
0.344 8.738 85.677 57.519
0.375 9.525

30

STD

 93.213 62.578
0.438 11.125 108.433 72.797
0.500 12.700

40

XHY

 123.289 82.770
18″ 18.000 457 0.219 5.563 61.948 41.588
0.250 6.350 70.593 47.393
0.281 7.137 79.208 53.176
0.312 7.925 20 87.792 58.939
0.375 9.525 STD 105.144 70.588
0.438 11.125 30 122.369 82.152
0.500 12.700 XHY 139.198 93.450
0.562 14.275 40 155.904 104.666
0.625 15.875 172.754 115.978
20″ 20.000 508 0.250 6.350 78.547 52.733
0.282 7.163 88.458 59.386
0.312 7.925 97.719 65.604
0.375 9.525 20 STD 117.075 78.598
0.438 11.125 136.305 91.508
0.500 12.700 30 XHY 155.106 104.130
0.594 15.088 40 183.378 123.110
0.625 15.875 192.640 129.328
0.688 17.475 211.368 141.901
24″ 24.000 610 0.250 6.350 94.456 63.413
0.281 7.137 106.029 71.183
0.312 7.925 117.573 18.932
0.375 9.525 20 STD 140.938 64.618
0.438 11.125 164.176 110.219
0.500 12.700 XHY 186.923 125.490
0.625 15.875 232.410 156.028
0.688 17.475 40 255.148 171.293
0.750 19.050 277.401 186.233
30″ 30.000 762 0.250 6.350 118.318 79.433
0.281 7.137 132.851 89.189
0.312 7.925 10 147.353 98.925
0.375 9.525 STD 176.731 118.648
0.438 11.125 205.983 138.286
0.500 12.700 20 XHY 234.647 157.530
0.625 15.875 30 292.066 196.078
0.688 17.475 320.817 215.380
0.750 19.050 348.988 234.293
36″ 36.000 914 0.250 6.350 142.180 95.453
0.281 7.137 159.672 107.196
0.312 7.925 10 177.133 118.918
0.375 9.525 STD 215.525 142.678
0.438 11.125 247.790 166.353
0.500 12.700 20 XHY 282.372 198.570
0.625 15.875 351.723 236.128

0.688

 17.475 386.487 259.467

0.750

 19.050 420.576 282.353
42″ 42.000 1067 0.312 7.925 206.914 138.911
0.375 9.525 STD 248.319 166.708
0.500 12.700 XHY 33.097 221.610
0.750 19.050 492.163 330.413
48″ 48.000 1219 0.375 9.525 STD 284.112 190.738
0.438 11.125 331.404 222.487
0.500 12.700 XHY 377.822 253.650
0.750 19.050 563.750 378.473
0.875 22.225 655.969 440.383

The table includes standard wall thickness ranges available for UNS N08825 seamless pipes in different diameters.

Grade UNS No Old British Euronorm GOST Japanese JIS
BS En No AFNOR
Incoloy 825 N08825 NA 16 NiCr21Mo 2.4858 NFE30C20DUM ЭП703 NCF 825
Types Out diameter Wall thickness Length
NB Sizes (in stock) 1/8” ~ 8” SCH 5 / SCH 10 / SCH 40 / SCH 80 / SCH 160 Upto 6 Meters
Incoloy 825 Seamless Pipes (Custom Sizes) 5.0mm ~ 203.2mm As per requirement Upto 6 Meters
Incoloy 825 Welded Pipes (in Stock + Custom Sizes) 5.0mm ~ 1219.2mm 1.0 ~ 15.0 mm Upto 6 Meters

The table includes standard wall thickness ranges available for UNS N08825 seamless pipes in different diameters.

1/8" IPS(.405"O. D.) 3 1/2" IPS( 4.000"O. D.)
SCH 40, 80 SCH 10, 40, 80, 160, XXH
1/4" IPS(.540"O. D.) 4" IPS(4.500"O. D.)
SCH 10, 40, 80 SCH 10, 40, 80, 160, XXH
3/8" IPS(.675"O. D.) 5" IPS( 5.563"O. D.)
SCH 10, 40, 80 SCH 10, 40, 80, 160, XXH
1/2" IPS(.840"O. D.) 6" IPS(6.625"O. D.)
SCH 5, 10, 40, 80, 160, XXH SCH 5, 10, 40, 80, 120, 160, XXH
3/4" IPS(1.050"O. D.) 8 ” IPS(8.625"O. D.)
SCH 10, 40, 80, 160, XXH SCH 5, 10, 40, 80, 120, 160, XXH
1" IPS:(1.315′O. D.) 10" IPS(10.750"O. D.)
SCH 5, 10, 40, 80, 160, XXH SCH 10, 20, 40, 80 (.500), TRUE 80(.500)
1-1/4" IPS(1.660"O. D.) 12" IPS(12.750"O. D.)
SCH 10, 40, 80, 160, XXH SCH 10, 20, 40(.375), TRUE40(.406), SCH80(.500)
1-1/2" IPS(1.900"O. D.) 14" IPS(14.000"O. D.)
SCH 10, 40, 80, 160, XXH SCH10 (.188), SCH40 (.375)
2" IPS(2.375"O. D.) 16" IPS(16.000"O. D.)
SCH 10, 40, 80, 160, XXH SCH10(.188), SCH40(.375)
2 1/2" IPS(2.875"O. D.) 18" IPS (18.000"O. D.)
SCH 10, 40, 80, 160, XXH SCH-40 (.375)
3" IPS( 3.500"O. D.)  
SCH 5, 10, 40, 80, 160, XXH  

Manufacturing Process of Incoloy 825 Seamless Pipes

There are 5 key steps in incoloy 825 seamless pipe manufacturing process which are as follows.

Incoloy Seamless Pipes Manufacturing Process

1. Raw Material Selection
High-quality incoloy billets and strips are carefully selected for superior strength and corrosion resistance.

2. Pipes Formation

The selected raw material is formed into pipes using seamless extrusion methods, depending on the application.

3. Heat Treatment

Pipes undergo required controlled heat treatment to enhance mechanical properties and relieve internal stresses.

4. Cold Working and Finishing

After heat treatment, pipes are cold-worked for better surface finish, dimensional accuracy and improved strength.

5. Quality Control and Testing

Every pipe is thoroughly inspected and tested to ensure it meets international quality standards for performance and reliability.

Applications of 825 Incoloy Seamless Pipes

Incoloy 825 seamless pipes are primarily used in the chemical processing industry, making it the sector with the highest usage due to the alloy’s resistance to strong acids and corrosion. These pipes are commonly installed in heat exchangers, pickling equipment, acid production units, and pollution-control systems where they handle sulfuric and phosphoric acids. Incoloy 825 is also used in marine exhaust systems, offshore oil platforms, and nuclear fuel reprocessing—areas that demand superior durability against oxidizing and reducing environments. Its corrosion resistance makes it suitable for transferring aggressive media safely and efficiently across critical operations.

Power Generation & Heat Exchange

Chemical and Petrochemical Industry

Oil and Gas Industry

Aerospace & Defense

Automotive and Transportation

Construction and Architecture

Food and Beverage Industry

Marine & Shipbuilding

Pharmaceutical & Biotechnology

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FAQ's

How do Incoloy 825 Seamless Pipes differ from standard stainless steel pipes?

Incoloy 825 pipes, made from a nickel-iron-chromium alloy with copper, molybdenum, and titanium, offer superior resistance to both oxidizing and reducing acids, as well as to stress corrosion cracking and pitting. It maintains high strength at elevated temperatures, making it ideal for chemical processing, oil and gas, nuclear, and pollution control applications. In contrast, standard stainless steel pipes, primarily composed of iron and chromium, provide good general corrosion resistance but are more prone to pitting and cracking in aggressive environments. While stainless steel is more cost-effective and suitable for general-purpose uses, it lacks the advanced corrosion protection of Incoloy 825 in demanding conditions.

Incoloy 825 seamless pipes perform well in high-temperature applications up to about 538°C (1000°F), maintaining good mechanical strength and stability for use in heat exchangers and chemical processing equipment. However, prolonged exposure above this range can alter the alloy’s microstructure, reducing ductility and strength. Therefore, it is generally approved for pressure vessel use up to 525–538°C.

 

Incoloy 825 seamless pipes are used in chemical, oil and gas, power, nuclear, and marine industries for their excellent corrosion resistance. They handle corrosive acids in reactors and heat exchangers and are ideal for sour gas wells, offshore platforms, and refineries operating under high pressure and harsh conditions.

Incoloy 825 is a nickel-iron-chromium alloy with molybdenum, copper, and titanium that offers excellent resistance to corrosion in acidic and marine environments. It performs well against pitting, crevice corrosion, and stress cracking, making it ideal for chemical processing, oil and gas, and marine applications.

 

Incoloy 825 is a nickel-iron-chromium alloy with molybdenum, copper, and titanium that offers excellent resistance to corrosion and oxidation, especially in sulfuric, phosphoric, and acetic acids. SS316 is an austenitic stainless steel with molybdenum, providing good corrosion resistance, formability, and weldability. Incoloy 825 performs better in high-temperature and highly corrosive conditions, while SS316 is more affordable and easier to weld.

Inconel is a nickel-chromium alloy known for its exceptional strength and oxidation resistance at very high temperatures, making it ideal for aerospace and heat-intensive applications. In contrast, Incoloy 825 is a nickel-iron-chromium alloy with added molybdenum, copper, and titanium, offering excellent corrosion resistance in acidic and marine environments at moderate temperatures.

Incoloy 825 (UNS N08825 / DIN 2.4858) is a nickel-iron-chromium alloy containing 38–46% nickel, 19.5–23.5% chromium, and 2.5–3.5% molybdenum, offering excellent resistance to corrosion, oxidation, and stress cracking. Conforming to ASTM B423 standards, it provides high mechanical strength with a tensile strength of around 770 MPa and yield strength of 440 MPa. The alloy performs well in both oxidizing and reducing environments, making it suitable for applications involving sulfuric and phosphoric acids.

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