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Name | Alloy825 threaded rod |
Standard | DIN975 DIN796,IFI 131 |
Size Range | M5-M64 or non-standard as requested |
Finish | Bright&Clean |
Marking | HT&FST or customization |
Material | Incoloy 825 , 2.4858 , UNS N08825 |
Grade | Grade 70, |
Certificates | EN10204-3.1B |
Non-standards | OEM is available, according to drawing or samples |
Samples | Samples available |
Package | Bulk in box and then in cartons, then on pallets, or according to customers' requirement. |
| Payment | T/T,Western Union |
What material is the Incoloy 825?
INCOLOY825 ,UNS N08825, 2.4858, Alloy825
astm-b564.pdf
formic acid, 0.5% potassium permanganate, balance water; 130°C: 0.038 mm/year
In mixture of 40% acetic acid, 6% propionic acid, 20% butane, 5% pentane, 8% ethyl acetate, 5% methyl ethyl ketone, plus other esters and ketones; 175°C: 0.051 mm/year
In liquid phthalic anhydride containing phthalic acid, some water, and small amounts of maleic acid, maleic anhydride, benzoic acid, and napthaquinones. On re- flux plate of crude phthalic anhydride still; 165-260°C; 0.2 mm/year
In evaporator during concentration of nitric acid solution saturated with potassium nitrate and containing chlorides:
- liquid 40–70% HNO3 + 0.2–0.02% Cl; 110°C: 0.1 mm/year
- vapor, 10–50% HNO3, 0.05–1.5% Cl: 0.279 mm/year
In evaporator during concentration of nitric acid solution from 35–45% nitric acid, saturated with zirconyl nitrate and containing 10–35% ZrO(NO3)2 crystals 120°C:
- liquid: 0.533 mm/year
- vapor: 0.66 mm/year
Liquid solution of 53% nitric acid containing 1% hydrofluoric acid, 80°C:
- liquid 5.08 mm/year
- vapor: 2.18 mm/year
In evaporator during concentration of raffinate solution containing 30–40% nitric liquid acid and variable chlorides up to 2000 ppm Cl, 80°C:
- liquid 0.02 mm/year
- vapor: 0.028 mm/year
Recycle liquor from evaporator fume scrubber containing 15% phosphoric acid, 20% hexafluorosilicic acid and 1% sulphuric acid, 80°C: 0.025 mm/year
Slurry in digester tank. Mixture contains 20% H3PO4, 2% H2SO4, 1% HF, 40% H2O, plus CaSO4, 85°C: 0.02 mm/year
Slurry containing 37% H3PO4 (27% P2O5) in acid transfer tank. Velocity 1 m/s, temperature 75°C: 0.02 mm/year
Evaporator heated with hot gases in acid containing 53% H3PO4, 1–2% H2SO4, 1.5% HF plus Na2SiF6, 120°C: 0.15 mm/year
In wet separator on top of concentrating drum in vapors from concentration of crude acid to 50–55% H3PO4 containing HF, 125°C: 0.79 mm/year
Atmospheric corrosion - Alloy 825 shows great resistance to atmospheric corrosion. Results of a 20 year exposure to atmosphere near the ocean at Kure Beach show that average weight loss is 8.7 mg/dm2 and the average pit was less than 0.025 mm deep.
Sulphure Stress Cracking SSC - Alloy 825 is a bit more resistant to SSC in caustic environment than Alloy C-276.
Stress-corrosion cracking - Alloy 825, when tested in boiling 42% Magnesium Chloride solution for 192h, was etched and pitted, but showed no cracks.
Weldability - the alloy belongs to 45th weldability group according to ISO 15608. For brazing, p-number is equal 111, according to ASME/AWS.
Selection of welding consumables for Alloy C-276
Coated electrodes: ENiCrMo3
Filler metals: ERNiCrMo-3
If forged pieces are supposed to be welded and operate in an environment that could cause intergranural corrosion, the pieces should be given a stabilizing anneal to prevent sensitization of the heat-affected zone.
Recommended working and heat treatment parameters for C-276 alloy:
Forging: 870-1175 °C
Stabilizing anneal: 940 °C; 1h
Some reduction must be accomplished between 870 and 980 °C during final forging in order to ensure maximum corrosion resistance.
The alloy should be cooled at a rate equal to or faster than air cooling. Stabilizing anneal of 1h restores corrosion resistance.
An Incoloy 825 Stud Bolt is a high-performance stud fastener made from a nickel-iron-chromium alloy (Incoloy 825 / UNS N08825). It contains elements such as molybdenum, copper, and titanium, offering excellent corrosion resistance and high-temperature performance. It is commonly used in chemical equipment, petroleum refining, marine environments, and power generation equipment.
Exceptional corrosion resistance: Performs exceptionally well in highly corrosive environments containing sulfur, phosphorus, and nitric acid, particularly resistant to pitting and crevice corrosion.
Resistance to stress corrosion cracking (SCC): Maintains stability even under combined stress and corrosive factors.
High-temperature strength: Can withstand high-temperature working environments, with a maximum temperature resistance of approximately 540 °C / 1000 °F.
Chemical processing equipment: such as acid washing tanks, reactors, and heat exchangers.
Marine and offshore facilities: resistant to salt fog and high chloride corrosion, suitable for securing pump bodies and pipelines.
Oil and gas equipment: such as tube sheet fasteners, particularly effective in sulfur- or chlorine-containing environments.
Power and nuclear industries: Suitable for high-temperature, high-corrosion critical connection points.
Tensile strength: Approximately 550 MPa (80 ksi), yield strength approximately 220 MPa (32 ksi), elongation around 30%.
Chemical composition (typical range):
* Nickel (Ni) 38%-46%, Chromium (Cr) 19.5%-23.5%, Copper (Cu) 1.5%-3.0%, Molybdenum (Mo) 2.5%-3.5%, Titanium (Ti) 0.6%-1.2%, etc.
Customization is widely supported: including thread types (UNC, UNF, Metric, DIN, etc.), head types (hex, round, square, etc.), sizes (diameter M3–M100 or larger), and lengths from 3 mm to 200 mm or longer.
Multiple surface treatments available: such as galvanized (yellow/white/blue), black oxide, Sherardizing, nickel plating, PTFE coating, galvanized, Dacromet, etc.
Name | Alloy825 threaded rod |
Standard | DIN975 DIN796,IFI 131 |
Size Range | M5-M64 or non-standard as requested |
Finish | Bright&Clean |
Marking | HT&FST or customization |
Material | Incoloy 825 , 2.4858 , UNS N08825 |
Grade | Grade 70, |
Certificates | EN10204-3.1B |
Non-standards | OEM is available, according to drawing or samples |
Samples | Samples available |
Package | Bulk in box and then in cartons, then on pallets, or according to customers' requirement. |
| Payment | T/T,Western Union |
What material is the Incoloy 825?
INCOLOY825 ,UNS N08825, 2.4858, Alloy825astm-b564.pdf
formic acid, 0.5% potassium permanganate, balance water; 130°C: 0.038 mm/year
In mixture of 40% acetic acid, 6% propionic acid, 20% butane, 5% pentane, 8% ethyl acetate, 5% methyl ethyl ketone, plus other esters and ketones; 175°C: 0.051 mm/year
In liquid phthalic anhydride containing phthalic acid, some water, and small amounts of maleic acid, maleic anhydride, benzoic acid, and napthaquinones. On re- flux plate of crude phthalic anhydride still; 165-260°C; 0.2 mm/year
In evaporator during concentration of nitric acid solution saturated with potassium nitrate and containing chlorides:
- liquid 40–70% HNO3 + 0.2–0.02% Cl; 110°C: 0.1 mm/year
- vapor, 10–50% HNO3, 0.05–1.5% Cl: 0.279 mm/year
In evaporator during concentration of nitric acid solution from 35–45% nitric acid, saturated with zirconyl nitrate and containing 10–35% ZrO(NO3)2 crystals 120°C:
- liquid: 0.533 mm/year
- vapor: 0.66 mm/year
Liquid solution of 53% nitric acid containing 1% hydrofluoric acid, 80°C:
- liquid 5.08 mm/year
- vapor: 2.18 mm/year
In evaporator during concentration of raffinate solution containing 30–40% nitric liquid acid and variable chlorides up to 2000 ppm Cl, 80°C:
- liquid 0.02 mm/year
- vapor: 0.028 mm/year
Recycle liquor from evaporator fume scrubber containing 15% phosphoric acid, 20% hexafluorosilicic acid and 1% sulphuric acid, 80°C: 0.025 mm/year
Slurry in digester tank. Mixture contains 20% H3PO4, 2% H2SO4, 1% HF, 40% H2O, plus CaSO4, 85°C: 0.02 mm/year
Slurry containing 37% H3PO4 (27% P2O5) in acid transfer tank. Velocity 1 m/s, temperature 75°C: 0.02 mm/year
Evaporator heated with hot gases in acid containing 53% H3PO4, 1–2% H2SO4, 1.5% HF plus Na2SiF6, 120°C: 0.15 mm/year
In wet separator on top of concentrating drum in vapors from concentration of crude acid to 50–55% H3PO4 containing HF, 125°C: 0.79 mm/year
Atmospheric corrosion - Alloy 825 shows great resistance to atmospheric corrosion. Results of a 20 year exposure to atmosphere near the ocean at Kure Beach show that average weight loss is 8.7 mg/dm2 and the average pit was less than 0.025 mm deep.
Sulphure Stress Cracking SSC - Alloy 825 is a bit more resistant to SSC in caustic environment than Alloy C-276.
Stress-corrosion cracking - Alloy 825, when tested in boiling 42% Magnesium Chloride solution for 192h, was etched and pitted, but showed no cracks.
Weldability - the alloy belongs to 45th weldability group according to ISO 15608. For brazing, p-number is equal 111, according to ASME/AWS.
Selection of welding consumables for Alloy C-276
Coated electrodes: ENiCrMo3
Filler metals: ERNiCrMo-3
If forged pieces are supposed to be welded and operate in an environment that could cause intergranural corrosion, the pieces should be given a stabilizing anneal to prevent sensitization of the heat-affected zone.
Recommended working and heat treatment parameters for C-276 alloy:
Forging: 870-1175 °C
Stabilizing anneal: 940 °C; 1h
Some reduction must be accomplished between 870 and 980 °C during final forging in order to ensure maximum corrosion resistance.
The alloy should be cooled at a rate equal to or faster than air cooling. Stabilizing anneal of 1h restores corrosion resistance.
An Incoloy 825 Stud Bolt is a high-performance stud fastener made from a nickel-iron-chromium alloy (Incoloy 825 / UNS N08825). It contains elements such as molybdenum, copper, and titanium, offering excellent corrosion resistance and high-temperature performance. It is commonly used in chemical equipment, petroleum refining, marine environments, and power generation equipment.
Exceptional corrosion resistance: Performs exceptionally well in highly corrosive environments containing sulfur, phosphorus, and nitric acid, particularly resistant to pitting and crevice corrosion.
Resistance to stress corrosion cracking (SCC): Maintains stability even under combined stress and corrosive factors.
High-temperature strength: Can withstand high-temperature working environments, with a maximum temperature resistance of approximately 540 °C / 1000 °F.
Chemical processing equipment: such as acid washing tanks, reactors, and heat exchangers.
Marine and offshore facilities: resistant to salt fog and high chloride corrosion, suitable for securing pump bodies and pipelines.
Oil and gas equipment: such as tube sheet fasteners, particularly effective in sulfur- or chlorine-containing environments.
Power and nuclear industries: Suitable for high-temperature, high-corrosion critical connection points.
Tensile strength: Approximately 550 MPa (80 ksi), yield strength approximately 220 MPa (32 ksi), elongation around 30%.
Chemical composition (typical range):
* Nickel (Ni) 38%-46%, Chromium (Cr) 19.5%-23.5%, Copper (Cu) 1.5%-3.0%, Molybdenum (Mo) 2.5%-3.5%, Titanium (Ti) 0.6%-1.2%, etc.
Customization is widely supported: including thread types (UNC, UNF, Metric, DIN, etc.), head types (hex, round, square, etc.), sizes (diameter M3–M100 or larger), and lengths from 3 mm to 200 mm or longer.
Multiple surface treatments available: such as galvanized (yellow/white/blue), black oxide, Sherardizing, nickel plating, PTFE coating, galvanized, Dacromet, etc.
