Melting and Casting
Steel and alloying metals are loaded into an electric arc furnace. Once in the furnace, the metal is heated to a specific temperature above its melting point, usually in excess of 2800°F.
What are the key differences between Incoloy 800, 800H, and 800HT bars, rods, and wires?
Incoloy 800, 800H, and 800HT are three variations of nickel-iron-chromium alloys widely used in various industrial applications. While they share a similar base composition, each alloy possesses distinct characteristics that suit specific environments and operating conditions.
Incoloy 800 is the standard alloy and offers excellent resistance to oxidation, carburization, and corrosion in high-temperature environments. It is commonly used in heat exchangers, furnace components, and chemical processing equipment applications.
Table Of Content
Incoloy 800H is a modified version with higher carbon content, designed to provide enhanced creep resistance at elevated temperatures. This alloy is ideal for prolonged exposure to high temperatures, such as in petrochemical refining, power generation, and thermal processing industries.
Incoloy 800HT is a modified version that undergoes additional heat treatment to optimize its mechanical properties. It exhibits superior high-temperature strength and resistance to thermal fatigue, making it suitable for demanding applications like gas turbines, industrial furnaces, and steam reforming units.
What are the typical applications of Incoloy 800 / 800H / 800HT bars, rods, and wires?
Incoloy 800 bars are widely used in various industries due to their exceptional properties and suitability for high-temperature environments. These bars find typical applications in chemical processing, power generation, and furnace manufacturing. Incoloy 800 bars are utilized in equipment and components that come into contact with corrosive chemicals, acidic solutions, and high-temperature gases in the chemical processing industry.
Incoloy 800H rods find typical applications in various industries that require exceptional high-temperature strength and resistance to creep deformation. These rods are commonly utilized in petrochemical refining, thermal processing, and power generation sectors. Incoloy 800H rods are employed in applications involving prolonged exposure to high temperatures and corrosive environments in the petrochemical refining industry. They are utilized in components such as reformer tubes, furnace equipment, and ethylene pyrolysis coils.
Incoloy 800HT wires find typical applications in industries that demand exceptional high-temperature strength, thermal stability, and resistance to thermal fatigue. These wires are commonly used in gas turbines, industrial furnaces, and steam reforming units. Incoloy 800HT wires are employed in various components such as combustion chambers, turbine blades, and transition ducts in the gas turbine industry.
| Standard | ASTM B166 / ASME SB166 |
| Dimensions | EN, DIN, JIS, ASTM, BS, ASME, AISI |
| Size | Diameter: 3-~800mm |
| Hex Bar size | 2-100mm A/F |
| Flat bar size | Thickness: 2 -100mm |
| Width: 10 to 500mm | |
| Square bar size | 4 to 100mm |
| Wire Length | Cut Lengths: 0.125" to 72" No Limit on Spooled Lengths |
| Wires Diameter | 0.0004" to 0.040" 10 microns to 1.0 mm Other Sizes on Request |
| Wire Condition | M, Y, 1/2Hard |
| Angle Bar Size | 3mm*20mm*20mm~12mm*100mm*100mm |
| Rectangular Bars Section | 3.0 to 12.0mm thickness |
| Hollow Bar | 32mm OD x 16mm ID to 250mm OD x 200mm ID) |
| Threaded Bar Billet Size | 1/2 to 495mm Diameter |
| Rectangular Size | 33 x 30mm to 295 x 1066mm |
| Hex Bars Finish | Cold (bright) drawn, centreless ground, hot rolled, smooth turned, peeled, slit rolled edge, hot rolled annealed, Rough Turned, Bright, Polish, Grinding, Centreless Ground & Black |
| Hollow Bar Tolerance | H8, H9, H10, H11, H12, H13K9, K10, K11, K12 or as per clients’ requirements |
| T-Bar Surface | Bright, Hot Rolled Pickled, Cold Drawn, Sand Blasting Finished, Polished, Hairline |
| Tempers | Tempers range from dead soft annealed to ultra spring temper |
| Condition | Hardened & tempered, annealed |
| Cold Rolled Bar Technique | Hot Rolled, Cold Drawn, Cold Rolled, Forged Round Bar, Rod |
| Form | Round, Rod, T-Bar, Channel Bar, Precision Ground Bar, Flat Bar, Square, Blocks, Round Rod, Rings, Hollow, Triangle, Rectangle, Hex (A/F), Threaded, Half Round Bar, Profiles, Billet, Ingot, I/H Bar, Forging etc. |
| Wire available in form of | Flat, Coil, mesh, Knitted wire mesh, spring, stranded and twisted |
| STANDARD | UNS | WERKSTOFF NR. | AFNOR | EN | JIS | BS | GOST | OR |
| Incoloy 800 | N08800 | 1.4876 | Z8NC32-21 | X10NiCrAlTi32-20 | NCF 800 | NA 15 | ЭИ670 | XH32T |
| Incoloy 800H | N08810 | 1.4958 / 1.4876 | Z8NC33-21 | X5NiCrAlTi31-20 | NCF 800H | NA 15(H) | ЭИ670 | XH32T |
| Incoloy 800HT | N08811 | 1.4859 / 1.4876 | – | X8NiCrAlTi32-21 | NCF 800HT | NA 15(HT) | ЭИ670 | XH32T |
| Grade | C | Ni | Cr | Cu | Fe | Ti | Mn | Si | S | Al |
| Incoloy 800 | 0.1 max | 30-35 | 19-23 | 0.75 max | 39.5 min | 0.15-0.60 | 1.5 max | 1.0 max | 0.015 max | 0.15-0.60 |
| Incoloy 800H | 0.05-0.1 | 30-35 | 19-23 | 0.75 max | 39.5 min | 0.15-0.60 | 1.5 max | 1.0 max | 0.015 max | 0.15-0.60 |
| Incoloy 800HT | 0.06-0.1 | 30-35 | 19-23 | 0.75 max | 39.5 min | 0.25-0.60 | 1.5 max | 1.0 max | 0.015 max | 0.85-1.20 |
| Element | Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| Incoloy 800 / 800H / 800HT | 7.94 g/cm3 | 1385 °C (2525 °F) | Psi – 75,000 , MPa – 520 | Psi – 30,000 , MPa – 205 | 30 % |
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