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Our Incoloy825 Hex Nut is a top-tier solution for aggressive environments, manufactured by HT&FST from Incoloy825 (Alloy825, UNS N08825, W.Nr 2.4858)—a nickel-iron-chromium alloy enhanced with molybdenum, copper, and titanium. It adheres to DIN934, ISO4032, and ASME B18.2.2 standards, with a standard size of M12 (model: A825DIN934M12) and a size range from M5 to M64 (non-standard via OEM).
Each nut meets Grade 70 strength requirements (yield strength 324 MPa, tensile strength 690 MPa) and holds EN10204-3.1B certification. It excels in both reducing/oxidizing acids and high temperatures (up to 1000°F/538°C), making it a staple for chemical and nuclear industries.
Name | Alloy825 Hex Nut |
Standard | DIN934,ISO4032,ASME B18.2.2 |
Size Range | M5-M64 or non-standard as requested |
Finish | Bright&Clean |
Marking | HT&FST or customization |
Material | Alloy825,2.4858, 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 |
INCOLOY825
What material is the Incoloy 825?
INCOLOY825 ,UNS N08825, 2.4858, Alloy825
astm-b564.pdf
Chemical composition of Incoloy825
| Alloy | % | Ni | Cr | Fe | Ti | Mo | C | Mn | S | P | Si | Al | Cu |
| 825 | Min. | 38 | 19.5 | 22 | 0.6 | 2.5 | 1.5 | ||||||
| Max. | 46 | 23.5 | 1.2 | 3.5 | 0.05 | 1.0 | 0.03 | 0.03 | 0.5 | 0.2 | 3.0 |
Physical properties of Incoloy825
| Density | 8.14 g/cm³ |
| Melting point | 1370-1400 ºC |
Incoloy825 material properties
| Type | Yield strength Rp0.2, MPa | Tensile strength Rm, MPa | Elongation [%] | Hardness [HRB] |
BAR | ≥ 324 | ≥ 690 | ≥ 45 | ≤ 90 |
Acid Resistance: 0.025 mm/year corrosion rate in 15% phosphoric acid (80°C); 0.02 mm/year in 20% phosphoric acid + 2% sulfuric acid (85°C).
Stress Corrosion Cracking (SCC) Resistance: No cracking after 192 hours in boiling 42% magnesium chloride.
Atmospheric Durability: 20-year coastal exposure (Kure Beach) shows 8.7 mg/dm² weight loss and <0.025 mm pit depth.
Temperature Range: Approved for pressure-vessel use up to 800°F (427°C); maintains strength up to 1000°F (538°C).
Ductility: 45% elongation rate prevents brittle failure under thermal cycling (e.g., power plant turbines).
Hardness: Maximum HRB 90—compatible with high-torque installation without damage.
Weldability: ISO 15608 weldability group 45; recommended consumables: ENiCrMo3 electrodes, ERNiCrMo-3 filler metals.
Custom Markings: Add part numbers or logos for inventory control.
Packaging: Standard bulk packaging; moisture-proof bags for humid environments.
Chemical Acid Handling: Incoloy825 (with copper/titanium) resists sulfuric/nitric acid, perfect for securing reactor vessels and acid transfer lines. It has a 0.025 mm/year corrosion rate in 15% phosphoric acid (80°C), ensuring durability in aggressive media.
Oil & Gas Sour Gas Pipelines: Resists sulfide stress cracking (SSC), ideal for offshore wellheads and sour gas transport. Its high-temperature tolerance (up to 538°C) maintains strength in heat-intensive drilling operations.
Nuclear Fuel Reprocessing: Used in radioactive coolant systems. Its corrosion resistance prevents metal leaching, avoiding contamination of nuclear materials—meeting strict safety standards for nuclear industries.
Pickling Equipment: Seals heating coils and tank lids in hydrochloric/sulfuric acid pickling baths. Its 45% elongation rate prevents brittle failure under thermal cycling, ensuring reliable performance in metal surface treatment.
A1: Incoloy825 adds copper (1.5–3.0%) and titanium (0.6–1.2%) for superior aqueous corrosion resistance. Incoloy 800 is better for dry high temperatures; Incoloy825 excels in wet, corrosive settings.
A2: Yes—use ENiCrMo3 electrodes/ERNiCrMo-3 filler metals. Post-weld stabilizing anneal (940°C, 1 hour) restores corrosion resistance.
A3: T/T/Western Union for standard orders; L/C for orders over USD50,000. Long-term customers get 50% advance + 50% upon delivery.
A4: Yes! Our team provides torque charts, welding guidelines, and corrosion resistance data to ensure proper use.
Our Incoloy825 Hex Nut is a top-tier solution for aggressive environments, manufactured by HT&FST from Incoloy825 (Alloy825, UNS N08825, W.Nr 2.4858)—a nickel-iron-chromium alloy enhanced with molybdenum, copper, and titanium. It adheres to DIN934, ISO4032, and ASME B18.2.2 standards, with a standard size of M12 (model: A825DIN934M12) and a size range from M5 to M64 (non-standard via OEM).
Each nut meets Grade 70 strength requirements (yield strength 324 MPa, tensile strength 690 MPa) and holds EN10204-3.1B certification. It excels in both reducing/oxidizing acids and high temperatures (up to 1000°F/538°C), making it a staple for chemical and nuclear industries.
Name | Alloy825 Hex Nut |
Standard | DIN934,ISO4032,ASME B18.2.2 |
Size Range | M5-M64 or non-standard as requested |
Finish | Bright&Clean |
Marking | HT&FST or customization |
Material | Alloy825,2.4858, 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 |
INCOLOY825
What material is the Incoloy 825?
INCOLOY825 ,UNS N08825, 2.4858, Alloy825astm-b564.pdf
Chemical composition of Incoloy825
| Alloy | % | Ni | Cr | Fe | Ti | Mo | C | Mn | S | P | Si | Al | Cu |
| 825 | Min. | 38 | 19.5 | 22 | 0.6 | 2.5 | 1.5 | ||||||
| Max. | 46 | 23.5 | 1.2 | 3.5 | 0.05 | 1.0 | 0.03 | 0.03 | 0.5 | 0.2 | 3.0 |
Physical properties of Incoloy825
| Density | 8.14 g/cm³ |
| Melting point | 1370-1400 ºC |
Incoloy825 material properties
| Type | Yield strength Rp0.2, MPa | Tensile strength Rm, MPa | Elongation [%] | Hardness [HRB] |
BAR | ≥ 324 | ≥ 690 | ≥ 45 | ≤ 90 |
Acid Resistance: 0.025 mm/year corrosion rate in 15% phosphoric acid (80°C); 0.02 mm/year in 20% phosphoric acid + 2% sulfuric acid (85°C).
Stress Corrosion Cracking (SCC) Resistance: No cracking after 192 hours in boiling 42% magnesium chloride.
Atmospheric Durability: 20-year coastal exposure (Kure Beach) shows 8.7 mg/dm² weight loss and <0.025 mm pit depth.
Temperature Range: Approved for pressure-vessel use up to 800°F (427°C); maintains strength up to 1000°F (538°C).
Ductility: 45% elongation rate prevents brittle failure under thermal cycling (e.g., power plant turbines).
Hardness: Maximum HRB 90—compatible with high-torque installation without damage.
Weldability: ISO 15608 weldability group 45; recommended consumables: ENiCrMo3 electrodes, ERNiCrMo-3 filler metals.
Custom Markings: Add part numbers or logos for inventory control.
Packaging: Standard bulk packaging; moisture-proof bags for humid environments.
Chemical Acid Handling: Incoloy825 (with copper/titanium) resists sulfuric/nitric acid, perfect for securing reactor vessels and acid transfer lines. It has a 0.025 mm/year corrosion rate in 15% phosphoric acid (80°C), ensuring durability in aggressive media.
Oil & Gas Sour Gas Pipelines: Resists sulfide stress cracking (SSC), ideal for offshore wellheads and sour gas transport. Its high-temperature tolerance (up to 538°C) maintains strength in heat-intensive drilling operations.
Nuclear Fuel Reprocessing: Used in radioactive coolant systems. Its corrosion resistance prevents metal leaching, avoiding contamination of nuclear materials—meeting strict safety standards for nuclear industries.
Pickling Equipment: Seals heating coils and tank lids in hydrochloric/sulfuric acid pickling baths. Its 45% elongation rate prevents brittle failure under thermal cycling, ensuring reliable performance in metal surface treatment.
A1: Incoloy825 adds copper (1.5–3.0%) and titanium (0.6–1.2%) for superior aqueous corrosion resistance. Incoloy 800 is better for dry high temperatures; Incoloy825 excels in wet, corrosive settings.
A2: Yes—use ENiCrMo3 electrodes/ERNiCrMo-3 filler metals. Post-weld stabilizing anneal (940°C, 1 hour) restores corrosion resistance.
A3: T/T/Western Union for standard orders; L/C for orders over USD50,000. Long-term customers get 50% advance + 50% upon delivery.
A4: Yes! Our team provides torque charts, welding guidelines, and corrosion resistance data to ensure proper use.
