Incoloy 825 Pipes and Tubes
Table of Content
- Incoloy 825 Pipes and Tubes Overview
- Types of Incoloy 825 Pipe
- Incoloy 825 Tubes and Pipes Specifications
- Incoloy 825 Equivalent Grades and Trade Names
- Incoloy 825 Chemical Composition (UNS N08825)
- Incoloy 825 Mechanical Properties (ASTM B423)
- Incoloy 825 Pipe Pressure Rating
- Incoloy 825 Pipe Size Chart
- Application Industries
- Frequently Asked Questions
- Related Products
Incoloy 825 pipes and Incoloy 825 tubes (UNS N08825 / DIN 2.4858) are nickel-iron-chromium alloy pipes that are produced according to ASTM B423 / ASME SB423 standards. The alloy has excellent resistance to reducing and oxidising acids, seawater pitting and chloride stress corrosion cracking, making it the material of choice for challenging process applications. Kalpataru Piping offers seamless, welded and ERW alloy 825 pipes and 2.4858 pipes in various schedule and size combinations.We also supply related nickel-iron alloys including Incoloy 800/800H/800HT Pipes and Tubes, Incoloy 825 Seamless Pipes and Tubes, and Incoloy Flanges. Contact us for mill test certificates, third-party inspection, and competitive pricing.
ASTM B423 UNS N08825 Pipe
Alloy 825 Seamless Pipe
Incoloy 825 Pipe
Looking for Alloy 825 Pipe/ UNS N08825 pipes supplier for quick delivery? Get a free quote now.
Types of Incoloy 825 Pipe
2.4858 Incoloy 825 ERW Pipe
2.4858 Incoloy Cold Drawn Seamless Pipe
ASME SB 423 UNS N08825 Incoloy Seamless Pipe
ASTM B423 UNS N08825 Incoloy Rectangular Pipe
Incoloy 825 Alloy Square Pipe
Incoloy 825 Din 2.4858 Exhaust Pipe
Incoloy 825 Grade EFW Pipe
Incoloy 825 UNS N08825 SCH 40 Seamless Pipe
Incoloy 825 Welded Pipe
Incoloy 8825 Custom Pipe
Incoloy Alloy 825 Round Pipe
Incoloy N08825 Schedule 40S Seamless Pipe
Incoloy UNS No 8825 Clad Pipe
Nickel Alloy 825 Schedule 5S Pipe
UNS N08825 Incoloy 825 Thin Wall Pipe
Werkstoff 2.4858 Incoloy Polished Pipe
Incoloy 825 Tubes and Pipes Specifications
|
Parameter |
Details |
|
Material Grade |
Incoloy 825 / Alloy 825 |
|
UNS Number |
UNS N08825 |
|
DIN / Werkstoff Nr. |
2.4858 |
|
Standards |
ASTM B423 / ASME SB423 / ASTM B163 / ASTM B704 / ASTM B705 / ASTM B829 / DIN 17751 / ISO 6207 / VdTuV 432 |
|
Forms Available |
Seamless Pipes, Welded Pipes, ERW Pipes, Tubes, Clad Pipes |
|
Pipe Sizes (NB) |
1/8″ NB to 24″ NB |
|
OD Range (Seamless) |
3 mm to 600 mm |
|
Wall Thickness |
0.5 mm to 50 mm |
|
Schedule Range |
SCH 5, SCH 10, SCH 40, SCH 80, SCH 160, XXS |
|
Pipe Length |
Single Random (4 to 7 m), Double Random (7 to 12 m), Cut to Length |
|
Finish |
Hot Finished / Cold Drawn / Solution Annealed and Pickled / Bright Annealed / NACE MR0175 |
|
End Type |
Plain End, Beveled End, Threaded |
|
Density |
8.14 g/cm3 |
|
Melting Range |
1370 to 1400 deg C (2500 to 2550 deg F) |
Incoloy 825 Equivalent Grades and Trade Names
| Standard | Grade / Designation | UNS | Werkstoff Nr. |
| ASTM / ASME | Incoloy 825 | N08825 | 2.4858 |
| DIN | NiCr21Mo | N08825 | 2.4858 |
| Trade Names | Sanicro 41 / SM2242 / Alloy 825 | N08825 | 2.4858 |
Incoloy 825 Chemical Composition (UNS N08825)
|
Element |
Ni |
Cr |
Fe |
Mo |
|
% Content |
38.0 to 46.0 |
19.5 to 23.5 |
Balance (min 22%) |
2.5 to 3.5 |
|
Element |
Cu |
Ti |
C |
Mn |
|
% Content |
1.5 to 3.0 |
0.6 to 1.2 |
max 0.05 |
max 1.0 |
|
Element |
Si |
S |
Al |
|
|
% Content |
max 0.5 |
max 0.03 |
max 0.2 |
|
Incoloy 825 Mechanical Properties (ASTM B423)
|
Property |
Tensile Strength |
Yield Strength (0.2%) |
Elongation |
|
Minimum Value |
585 MPa (85 ksi) |
241 MPa (35 ksi) |
30% |
|
Property |
Hardness (max) |
Modulus of Elasticity |
Poissons Ratio |
|
Value |
195 HB |
196 GPa (28.4 x 10^6 psi) |
0.3 |
Incoloy 825 Pipe Pressure Rating
|
Tube O.D. (in.) |
Wall Thickness of Tube (inches) |
|||||||
|
.028 |
.035 |
.049 |
.065 |
.083 |
.095 |
.109 |
.120 |
|
|
Working Pressure (psig) |
||||||||
|
1/8 |
7900 |
10100 |
|
|
|
|
|
|
|
1/4 |
3700 |
4800 |
7000 |
9500 |
|
|
|
|
|
5/16 |
|
3700 |
5400 |
7300 |
|
|
|
|
|
3/8 |
|
3100 |
4400 |
6100 |
|
|
|
|
|
1/2 |
|
2300 |
3200 |
4400 |
|
|
|
|
|
3/4 |
|
|
2200 |
3000 |
4000 |
4600 |
|
|
|
1 |
|
|
|
2200 |
2900 |
3400 |
3900 |
4300 |
Application Industries
Incoloy 825 seamless pipes are the preferred choice in environments where simultaneous attack from reducing acids, oxidizing agents, and chloride-bearing media is expected. The combination of molybdenum and copper makes alloy 825 pipes highly effective in sulfuric and phosphoric acid service. Titanium stabilization prevents sensitization during welding, allowing the alloy to maintain corrosion resistance in the heat-affected zone. UNS N08825 pipes are also NACE MR0175 compliant for sour gas service.
- Petrochemical
- Chemical
- Refineries
- Fertilizers
Request a Quote for Incoloy 825 Tubes and Pipes
Mill Test Certificates | Third-Party Inspection | NACE MR0175 Material | Global Export
Frequently Asked Questions
What is the difference between Incoloy 825 and Inconel 825?
Incoloy 825 (N08825) is a nickel-iron-chromium alloy; Inconel alloys are nickel-chromium based with higher nickel. There is no official alloy called Inconel 825. The term is a common misnomer for Incoloy 825.
What is the maximum operating temperature for Incoloy 825 pipes?
Incoloy 825 pipes are rated up to 538 deg C (1000 deg F) for general corrosive service per ASTM B423. Above this range, evaluation for oxidation and creep resistance is required.
Is Incoloy 825 better than stainless steel for corrosive environments?
Yes, in most reducing-acid and seawater environments. Alloy 825 outperforms standard grades (304, 316) in sulfuric acid, phosphoric acid, and chloride service due to its higher nickel, molybdenum, and copper content.
What ASTM specifications apply to Incoloy 825 pipes and tubes?
ASTM B423 (seamless pipe and tube), ASTM B704 and B705 (welded tube and pipe), ASTM B163 (condenser tubes), and ASME SB423 for pressure vessel code compliance.
Can Incoloy 825 be welded?
Yes. UNS N08825 pipes are readily welded using matching Alloy 825 filler wire (ERNiFeCr-1). Titanium stabilization prevents sensitization in the heat-affected zone, preserving corrosion resistance post-weld.
What is UNS N08825?
UNS N08825 is the Unified Numbering System designation for Incoloy 825, a nickel-iron-chromium alloy with molybdenum, copper, and titanium additions. Equivalent DIN designation is Werkstoff Nr. 2.4858.
How does Incoloy 825 resist sulfuric acid?
Molybdenum (2.5 to 3.5%) and copper (1.5 to 3.0%) in the alloy composition specifically improve resistance to reducing acids. Alloy 825 pipes perform reliably in sulfuric acid at concentrations from dilute up to about 70%.
What are the standard pipe lengths for Incoloy 825?
Standard lengths are 4 to 7 m (single random) and 7 to 12 m (double random). Fixed or cut-to-length pieces are available on request for fabrication requirements.
