Incoloy 825 rods and bars are very corrosion-resistant nickel-iron-chromium alloys containing additions of copper, molybdenum, and titanium, specifically designed for severe chemical environments. The alloy possesses excellent resistance to oxidizing and reducing acids such as sulfuric and phosphoric acid and is suitable for seawater equipment, pollution control, and chemical processing. Incoloy 825 exhibits stability in hot as well as cold working conditions and is resistant to pitting, stress-corrosion cracking, and intergranular attack. It has structural integrity as well as a resistance to corrosion upon exposure for extended periods. These bars are utilized where mechanical strength and chemical stability are both required.
Incoloy 825 consists of 38–46% nickel, 19.5–23.5% chromium, 22% iron, 2.5–3.5% molybdenum, 1.5–3% copper, and titanium. Tensile strength is 550–700 MPa; yield strength is approximately 220–300 MPa. The alloy demonstrates fine corrosion resistance against sulfuric, phosphoric, nitric, and hydrofluoric acids, as well as good mechanical characteristics up to 540°C. It is also resistant to stress corrosion caused by chloride, pitting, and general corrosion. The material can be readily shaped, machined, and welded via standard methods. Its stability and corrosion resistance render it highly suitable for severe industrial environments.
Incoloy 825 Material Specification: ASTM B425/ ASME SB425 Inco 825
Grade: Inconel 600 (UNS N06600, Alloy 600, 2.4816), Inconel 601 (UNS N06601, Alloy 601, 2.4851), ASTM B425 Inconel 625 (UNS N06625, Alloy 625, 2.4856), Inconel 800 (UNS N08800, Alloy 800, 1.4876)
Form: Round, Square, Hex (A/F), Bush, Rectangle, Flat, Billet, Ingot, Forging, PSQ Bar, Wire Rod, Wire (Coil Form), Wire-mesh etc.
Size Range: 15NB to 150NB In manufacturing process: Cold drawn/ Extruded
Length: 100 mm To 3000 mm Long & Above
Diameter (Size) : Metric M6 to M48, Inches – 1/4’’ to 2’’
Tolerance : H8, H9, H10, H11, H12, H13, K9, K10, K11, K12 or as per clients’ requirements
Finish : Cold Drawn, Shot Blast & Drawn, 240 Grit Belt Polished, Black, Bright Polished, Rough Turned, NO.4 Finish, Matt Finish, BA Finish, High Polished
Condition : Cold Drawnd Polished Cold Drawn Centreless Ground & Polished, Threading
Surface : Hot Rolled Pickled or Sand Blasting Finished, Cold Drawn, Bright, Polished, Hairline
| Grade | C | Mn | Si | S | Cu | Fe | Ni | Cr | Al | Ti |
| 825 | 0.05 max | 1.00 max | 0.5 max | 0.03 max | 1.50 – 3.00 | 22.00 min | 38.00 – 46.00 | 19.50 – 23.50 | 0.02 max | 0.06 – 1.20 |
| Element | Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 825 | 8.14 g/cm3 | 1400 °C (2550 °F) | Psi – 80,000 , MPa – 550 | Psi – 32,000 , MPa – 220 | 30 % |
| STANDARD | WERKSTOFF NR. | UNS | JIS | BS | GOST | AFNOR | EN | OR |
| Incoloy 825 | 2.4858 | N08825 | NCF 825 | NA 16 | ЭП703 | NFE30C20DUM | NiCr21Mo | XH38BT |
| Size | Kgs / Foot | Kgs / Mtr | Size | Kgs / Foot | Kgs / Mtr | Size | Kgs / Foot | Kgs / Mtr |
|---|---|---|---|---|---|---|---|---|
| 3mm | 0.017 | 0.055 | 20mm | 0.753 | 2.470 | 3″ | 10.900 | 35.762 |
| 1/8″ | 0.019 | 0.062 | 22mm | 0.908 | 2.979 | 3-1/4″ | 12.800 | 41.996 |
| 5/32″ | 0.029 | 0.095 | 7/8″ | 0.926 | 3.038 | 3-1/2″ | 14.850 | 48.772 |
| 4mm | 0.030 | 0.098 | 24mm | 1.080 | 3.543 | 3-3/4″ | 17.001 | 55.780 |
| 3/16″ | 0.043 | 0.141 | 25mm | 1.180 | 3.871 | 4″ | 19.306 | 63.340 |
| 5mm | 0.047 | 0.154 | 1″ | 1.210 | 3.970 | 4-1/4″ | 21.908 | 72.249 |
| 7/32″ | 0.058 | 0.190 | 26mm | 1.271 | 4.170 | 4-1/2″ | 24.4487 | 80.340 |
| 6mm | 0.068 | 0.223 | 27mm | 1.368 | 4.490 | 4-3/4″ | 27.366 | 90.249 |
| 1/4″ | 0.076 | 0.249 | 1-1/8″ | 1.534 | 5.033 | 5″ | 30.461 | 99.940 |
| 7mm | 0.091 | 0.298 | 30mm | 1.691 | 5.548 | 5-1/2″ | 36.690 | 121.000 |
| 5/16″ | 0.118 | 0.387 | 1-1/4″ | 1.924 | 6.349 | 6″ | 43.860 | 143.900 |
| 8mm | 0.120 | 0.398 | 32mm | 1.894 | 6.314 | 6-1/2″ | 51.093 | 167.630 |
| 9mm | 0.152 | 0.498 | 1-3/8″ | 2.303 | 7.550 | 7″ | 59.432 | 196.000 |
| 3/8″ | 0.170 | 0.557 | 35mm | 2.390 | 7.553 | 7-1/2″ | 68.226 | 225.000 |
| 10mm | 0.189 | 0.620 | 36mm | 2.438 | 7.999 | 8″ | 77.586 | 254.55 |
| 11mm | 0.228 | 0.748 | 38mm | 2.792 | 8.903 | 10″ | 121.048 | 397.140 |
| 7/16″ | 0.232 | 0.761 | 1-1/2″ | 2.715 | 8.951 | |||
| 12mm | 0.271 | 0.889 | 40mm | 3.009 | 9.872 | |||
| 1/2″ | 0.303 | 0.994 | 1-5/8″ | 3.200 | 10.449 | |||
| 13mm | 0.318 | 1.043 | 1-3/4″ | 3.712 | 12.179 | |||
| 14mm | 0.368 | 1.207 | 45mm | 3.807 | 12.555 | |||
| 9/16″ | 0.383 | 1.256 | 1-7/8″ | 4.260 | 13.977 | |||
| 15mm | 0.424 | 1.391 | 48mm | 4.330 | 14.205 | |||
| 5/8″ | 0.473 | 1.551 | 50mm | 4.698 | 15.414 | |||
| 16mm | 0.481 | 1.578 | 2″ | 4.848 | 15.906 | |||
| 17mm | 0.543 | 1.791 | 2-1/8″ | 5.475 | 17.963 | |||
| 11/16″ | 0.573 | 1.880 | 2-1/4″ | 6.135 | 20.128 | |||
| 18mm | 0.610 | 2.001 | 60mm | 6.768 | 22.205 | |||
| 3/4″ | 0.682 | 2.237 | 2-3/8″ | 6.838 | 22.435 | |||
| 2-1/2″ | 7.576 | 24.856 | ||||||
| 2-5/8″ | 8.354 | 27.409 | ||||||
| 2-3/4″ | 9.169 | 30.083 |
Yes, Incoloy 825 Bars and Rods are highly corrosion-resistant, particularly against acids like sulfuric and phosphoric acid. Their nickel, iron, and molybdenum composition ensures excellent resistance to pitting, crevice corrosion, and stress corrosion cracking.
Yes, Incoloy 825 Bars and Rods can be customized in size and length to meet specific application requirements. They are available in various dimensions, ensuring versatility for diverse industries.
Incoloy 825 Bars and Rods perform exceptionally well in high-temperature environments, maintaining strength and stability. They exhibit excellent resistance to oxidation and scaling at elevated temperatures.
Incoloy 825 bars are utilized in chemical processing facilities for acid production and pickling equipment. They are utilized in heat exchangers, tanks, piping, and valves dealing with aggressive fluids. Marine uses include seawater-cooled heat exchangers and offshore oil and gas piping systems. The alloy finds application in pollution control systems, nuclear fuel reprocessing, and scrubber units. In food and pharmaceutical processing industries, it is chosen due to corrosion resistance and hygiene standards. Due to its formability and strength, it is used in fasteners, flanges, and structural parts subjected to brine, wastewater, and chloride-containing atmospheres.






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