Project Description
Commitment to You
Fushun Metal Co., Ltd. is one of the largest high quality seamless steel tube (both hot finished and cold drawn, cold rolled) manufacturers in China. We are specialized in producing all kinds of high-precision, middle and thick wall seamless steel tubes.
We produce of various carbon/alloy/stainless/nickel steel seamless steel pipes, mainly produces various high-end steel pipe products (OD 10-850mm; WT 1-150mm) such as Thermal power pipes, Nuclear power pipes, Petrochemical & Refinery pipes, Mechanical pipes, Oil & gas pipes, gas cylinder pipes, etc.
Incoloy 825 UNS N08825 2.4858 NiCr21Mo Nickel-Based Alloy Pipe & Tube
Alloy 825 (UNS N08825), also referred to as 2242, is a cold hardened nickel-based alloy, intended for corrosion resistance in highly sour (H2S) environments with moderate chloride content, requiring high strength up to 350°F.
825 offers increased resistance to the effects of H2S relative to stainless steels allowing its use as downhole tubular components, packers, and other subsurface equipment in sour wells with high-pressure and high-temperature (HPHT) conditions and Acid Gas Injection (AGI) wells. However, all environmental factors, including H2S, CO2 , temperature, pH, and chloride concentration, should be considered before final material selection.
The alloy is classified in MR0175/ISO15156 as a type 4c alloy, with no restrictions to a partial pressure of H2S below 270°F and resistant to 200 psi H2S at 350°F.
UNS N08825 Incoloy 825 is a nickel-iron-chromium alloy that contains small amounts of titanium, copper, and molybdenum. Incoloy® 825’s chemical composition provides great resistance to many corrosive environments, such as pitting, crevice corrosion, intergranular corrosion, and stress- corrosion cracking. Incoloy 825 nickel alloy has good mechanical properties from moderate to high temperatures, with a hot- working range of 1600 to 2150º F. Alloy 825 also maintains good weldability for all conventional processes.
Applications
Nickel alloy UNS N08825 has many different industrial applications, some of which include: Propeller shafts, Phosphoric acid evaporators, Tank trucks, Hot vessels for food, water, sea water, Sulphuric acid piping and vessels, Marine exhaust systems
Standard
Rod, Bar, Wire and Forging Stock: BS 3076NA16, ASTM B 425, ASTM B 564, ASME SB 425, ASME SB 564, ASME Code Case N-572, DIN 17752, DIN 17753, DIN 17754, VdTÜV 432, ISO 9723, ISO 9724, ISO 9725.
Plate, Sheet and Strip: BS 3072NA16, BS 3073NA16, ASTM B 424, ASTM B 906, ASME SB 424, ASME SB 906, DIN 17750, VdTÜV 432, ISO 6208.
Pipe and Tube: BS 3074NA16, ASTM B 163, ASTM B 423, ASTM B 704, ASTM B 705, ASTM B 751, ASTM B 775, ASTM B 829, ASME SB 163, ASME SB 423, ASME SB 704, ASME SB 705, ASME SB 751, ASME SB 775, ASME SB 829, ASME Code Case 1936, DIN 17751, VdTÜV 432, ISO 6207.
Others: ASTM B 366, ASME SB 366, DIN 17744
Chemical Composition
Ni | Fe | Cr | Mb | Cu | Ti | C | Mn | S | Si | Al |
38.0-46.0 | 22.0 min | 19.5-23.5 | 2.5-3.5 | 1.5-3.0 | .6-1.2 | 0.05 max | 1.0 max | 0.03 max | 0.5 max | 0.2 max |
Mechanical Properties
Form | Condition | Ultimate
Tensile Strength, ksi (MPa) |
Yield
Strength at 0.2% offset, ksi (MPa) |
Elongation
in 2″ or 4D, percent |
Sheet
Plate Strip, Bar |
Annealed
Annealed Annealed |
100 (689)
95 (655) 85 (590)a |
55 (379)
45 (310) 35 (240)a |
39
44 30a |
API 5CRA / ISO 13680 Group 3 Category 21-42-3
Grade | Yield Strength ksi |
Tensile Strength ksi |
Elongation % |
Hardness HRC |
NACE MR0175/ISO 15156 H2S Sour Service Limits |
||
min | max | min | min | max | |||
110 | 110 | 140 | 115 | 11 | 33 | Table A.14 Type 4c |
No limit ≤ 270°F, Refer to table for temperatures up to 450°F |
125 | 125 | 150 | 130 | 10 | 35 | ||
140 | 140 | 160 | 145 | 9 | 38 | 140 Grade not recommended for sour service |
MANUFACTURING PROCESS
PROCESS | DESCRIPTION |
Steel Making | Made by electric furnace process or blast furnace followed by Vacuum Oxygen Decarburization (VOD) process or Argon Oxygen Decarburization (AOD) Process |
Pipe Making | Manufactured by traditional tube manufacturing processes, High strength tubulars should be furnished in cold worked condition |
Heat Treatment | Solution Annealing Process before final cold drawing |
TYPICAL PHYSICAL PROPERTIES
70°F | 200°F | 400°F | ||
Density | lbs/in3 | 0.29 | ||
Thermal Expansion | X10-6/°F | 8 | 8 | 8.5 |
Elastic Modulus | psi x 106 | 28.3 | 27.9 | 27.1 |
Poisson Ratio | 0.3 | 0.3 | 0.3 | |
Thermal Conductivity | Btu/ft h °F | 6.4 | 7.1 | 8.1 |
Specific Heat | Btu/lb °F | 0.11 | 0.12 | 0.12 |
Weldability
Alloy 825 can be readily welded by the shielded metal-arc process using alloy welding electrode 135, the gas shielded arc processes using alloy filler metal 65, and the resistance welding processes. The alloy requires no postweld heat treatment. The corrosion resistance of deposited weld metal from both covered electrode and bare wire is equivalent to that of the parent metal.
Heat Treatment
Incoloy 825 is stabilise annealed at 940°C. The softest structure is obtained at 980°C. Sections heavier than sheet, strip and wire should be quenched to avoid sensitisation.
Corrosion Resistance
The outstanding property of Incoloy 825 is its corrosion resistance. In reducing & oxidising conditions, Incoloy 825 resists general corrosion, pitting & crevice corrosion, intergranular corrosion and stress corrosion cracking. It is particularly useful in sulphuric & phosphoric acids, sulphur containing flue gases, sour gas and oil wells and sea water.
Machinability
Incoloy 825 is classed as a ‘C’ alloy, and is reasonably easy to machine.
Experienced 15+ Years
Our ability to purchase materials directly from leading mills at the best possible price will give you the competitive edge. This coupled with a skilled workforce dedicated to embracing the demands of the markets.
We Can Supply Follows Products with High Quality:
- Cold Rolled Steel Tube
- Cold Drawn Steel Tube
- Hollow Bar
- Honed Tube
- Plated Tube
- Plated Bar
- Boiler Tube
All Products According Quality Standard Strictly:
- ASTM: ASTM A519, ASTM A513.
- JIS:JIS G3441, JIS G3445, JIS G3466, JIS G3459.
- DIN: DIN1626, DIN1629, DIN2391, DIN2393, DIN2448, DIN2458.
- EN: EN10305.
- BS: BS6323.
Wide Range of Pipes to Fit Your Industry:
- OD from 5mm to 820mm.
- Wall Thickness from 0.1 to 100mm.
- Length up to 50mtr per pc.
Can’t Find What You Looking for? Check Popular Items Blew.
Direct from the Source and Deliver to You in a Very Fast and Efficient Timeframe.