Aashish Metal & Alloys is an Inconel products supplier and stockist in India for nickel-chromium alloys used in high-temperature, corrosion-resistant and high-strength service. The range covers pipes and tubes, buttweld and forged fittings, flanges, fasteners, round bars, sheets and plates, tube fittings and instrumentation valves in Inconel 600, 601, 625 and 718.
Grade selection should follow the actual service condition: Inconel 600 combines heat and corrosion resistance; 601 is selected where high-temperature oxidation resistance is important; 625 adds strong resistance to chloride-related localised corrosion with useful strength; and precipitation-hardened 718 is used where substantially higher mechanical strength is required.
Orders can be supplied with EN 10204 3.1 Mill Test Certificates and heat-number traceability. PMI, EN 10204 3.2 documentation and third-party inspection can be arranged when specified in the purchase order. Send the grade/UNS number, product form, size, quantity, applicable standard, condition and certification requirement for a project-specific quotation.
What Are Inconel Products?
Inconel products include pipes, tubes, fittings, flanges, fasteners, bars and sheets manufactured from nickel-chromium-based alloys developed for demanding industrial conditions. These alloys offer strong resistance to oxidation, corrosion and mechanical degradation at elevated temperatures, making them suitable for chemical processing, power generation, aerospace, oil and gas and other high-temperature applications.
Their performance comes from a combination of nickel, chromium and other alloying elements. Nickel contributes to corrosion resistance and high-temperature stability, while chromium forms a protective oxide layer on the surface. Different Inconel grades are designed for specific service requirements. Inconel 625 contains molybdenum and niobium, which enhance its resistance to localized corrosion and contribute to its strength. Inconel 718 contains niobium, titanium and aluminium and develops high strength through precipitation hardening.
Aashish Metal & Alloys supplies core Inconel grades 600, 601, 625 and 718 across selected product forms. INCONEL® is a trademark of the Special Metals Corporation group; engineering orders should identify the UNS designation and applicable product standard. Inconel 690 and other grades should be added only where current product availability and the applicable product standard are confirmed.
For related nickel-alloy families, use contextual internal links to Nickel Alloy Products, Hastelloy Products and Monel Products. Keep Incoloy 800/800H/800HT and Incoloy 825 in a separate related-family block rather than presenting them as Inconel grades.
Inconel Products List
Inconel Products Range
Inconel Pipes & Tubes
Seamless and welded forms are subject to grade and governing product standard. Specify NPS + schedule for pipe or exact OD × wall for tube; confirm stock/mill range before publishing fixed size limits.
Inconel Buttweld Pipe Fittings
Use ASTM B366/B366M material requirements where applicable, with dimensions to ASME B16.9. Include elbows, tees, reducers, caps and stub ends only where supplied.
Inconel Forged Fittings
Socket-weld and threaded fittings require the grade-specific material/product specification and dimensions to ASME B16.11. Confirm pressure class and size against the actual product offering.
Inconel Flanges
Weld-neck, slip-on, blind, socket-weld, lap-joint and threaded forms are available where supported by the grade/product range. Use the grade-specific forging/material standard together with ASME B16.5 or B16.47 dimensional/class requirements.
Inconel Round Bars
Bright, peeled, hot-finished or forged forms are subject to grade, condition and current stock/mill range. Do not publish a blanket diameter range unless the stock list supports it.
Inconel Sheets & Plates
Hot-rolled or cold-rolled forms are subject to the grade-specific ASTM/AMS specification and mill range. Confirm thickness and width before publishing fixed capability claims.
Inconel Fasteners
Stud bolts, bolts, nuts, washers and machined fasteners are subject to alloy grade, condition, thread/dimensional standard and project specification.
Technical Data
Inconel Product Specifications
| Parameter | Details |
|---|---|
| Grades | Core Inconel: 600, 601, 625, 718. Add 690 only where current supply is confirmed. Related family: Incoloy 800/800H/800HT and 825 — do not label these as Inconel. |
| Pipe / tube size | Do not use one blanket range across every grade/form. State NPS + schedule for pipe or OD × wall for tube and confirm availability by grade and governing product standard. |
| Schedule | Schedule applies to applicable pipe dimensions only; tube should be specified by OD × wall. Confirm available schedules by grade and manufacturing route. |
| Fittings standard | ASTM B366/B366M material specification for applicable wrought nickel-alloy fittings; ASME B16.9 for buttweld dimensions; ASME B16.11 for forged socket-weld/threaded dimensions; MSS SP-97 only where an integrally reinforced branch outlet is supplied. |
| Flange standard | Use the grade-specific forging/material specification plus ASME B16.5 / B16.47 dimensional and pressure-class requirements as applicable. List EN 1092-1 or API 6A only for products actually offered to those standards. |
| Pressure class | Flange class and forged-fitting class depend on component type, dimensional standard, size and material. Publish only classes supported by the current product range. |
| Bar size | Confirm bar diameter range by grade, condition and current stock/mill list before publishing. |
| Sheet / plate | Confirm sheet/plate thickness and width by grade and governing ASTM/AMS product specification before publishing. |
| Test certificate | EN 10204 3.1 MTC where ordered; EN 10204 3.2, PMI and third-party inspection can be arranged when specified. |
ASTM / AMS Specifications by Product Form
| Grade | UNS | Werkstoff | Pipe / tube | Bar | Plate / sheet | Fittings | Flanges / forgings |
|---|---|---|---|---|---|---|---|
| Inconel 600 | N06600 | 2.4816 | ASTM B167 seamless pipe/tube; ASTM B516 welded tube; ASTM B517 welded pipe; ASTM B163 condenser/heat-exchanger tube | B166 | B168 | B366 WPNCI | B564 |
| Inconel 601 | N06601 | 2.4851 | ASTM B167 seamless pipe/tube; ASTM B516 welded tube; ASTM B163 condenser/heat-exchanger tube | B166 | B168 | B366 | B564 |
| Inconel 625 | N06625 | 2.4856 | ASTM B444 seamless pipe/tube; ASTM B704 welded tube; ASTM B705 welded pipe | B446 | B443 | B366 WPNCMC | B564 |
| Inconel 718 | N07718 | 2.4668 | ASTM B983 seamless high-strength pipe/tube where specified; AMS 5589 tubing for applicable aerospace requirements | B637, AMS 5662 | B670, AMS 5596 | – | B637 |
| Incoloy 825 | N08825 | 2.4858 | ASTM B423 seamless pipe/tube; ASTM B704 welded tube; ASTM B705 welded pipe | B425 | B424 | B366 WPNICMC | B564 |
Inconel Chemical Composition by Grade (%)
| Element | 600 | 601 | 625 | 718 | 825 |
|---|---|---|---|---|---|
| Nickel (Ni) | 72.0 min | 58.0 – 63.0 | 58.0 min | 50.0 – 55.0 | 38.0 – 46.0 |
| Chromium (Cr) | 14.0 – 17.0 | 21.0 – 25.0 | 20.0 – 23.0 | 17.0 – 21.0 | 19.5 – 23.5 |
| Iron (Fe) | 6.0 – 10.0 | Balance | 5.0 max | Balance | Balance / remainder |
| Molybdenum (Mo) | – | – | 8.0 – 10.0 | 2.8 – 3.3 | 2.5 – 3.5 |
| Niobium + Ta | – | – | 3.15 – 4.15 | 4.75 – 5.50 | – |
| Aluminium (Al) | – | 1.0 – 1.7 | 0.40 max | 0.20 – 0.80 | 0.20 max |
| Titanium (Ti) | – | – | 0.40 max | 0.65 – 1.15 | 0.6 – 1.2 |
| Copper (Cu) | 0.50 max | 1.0 max | – | 0.30 max | 1.5 – 3.0 |
| Carbon (C) | 0.15 max | 0.10 max | 0.10 max | 0.08 max | 0.05 max |
Reference Mechanical & Physical Properties
| Property | 600 (annealed) | 601 (annealed) | 625 (annealed) | 718 (aged) |
|---|---|---|---|---|
| Tensile strength (MPa, min) | 550 | 550 | 827 | 1275 |
| Yield strength 0.2% (MPa, min) | 240 | 205 | 414 | 1034 |
| Elongation (%, min) | 30 | 30 | 30 | 12 |
| Density (g/cm³) | 8.47 | 8.11 | 8.44 | 8.19 |
| Melting range (°C) | 1354 – 1413 | 1360 – 1411 | 1290 – 1350 | 1260 – 1336 |
| Temperature limit | Service-dependent | Service-dependent | Service-dependent | Service-dependent |
Reference values only. Mechanical minimums depend on product form, material condition and the governing ASTM/AMS specification; density and melting range are typical physical properties. Do not use this table as pressure/temperature design data. Confirm the applicable specification, design code and MTC.
Inconel 600 vs 601 vs 625 vs 718 — plus Incoloy 825
| Grade | Best at | Typical use |
|---|---|---|
| Inconel 600 | Oxidation and caustic resistance | Furnace parts, heat-treat fixtures, caustic soda plants |
| Inconel 601 | High-temperature oxidation resistance enhanced by aluminium | Radiant tubes, burner parts, thermal reactors |
| Inconel 625 | Pitting, crevice and seawater corrosion plus strength | Offshore risers, flue-gas scrubbers, marine hardware |
| Inconel 718 | Very high strength (precipitation hardened) | Turbine discs, fasteners, wellhead parts, springs |
| Incoloy 825 | Sulphuric and phosphoric acid resistance | Pickling tanks, sour-gas piping, acid production |
Selection guide: consider Inconel 625 where chloride/seawater corrosion and strength are important; 718 where precipitation-hardened high strength is required; 601 for high-temperature oxidation resistance; and 600 for a broad combination of heat and corrosion resistance. Final selection must account for medium, concentration, temperature, stress, fabrication and design code. Incoloy 825 is a separate nickel-iron-chromium alloy family for selected acid and sour-service duties.
Inconel 625 vs Stainless Steel 316L: Selection Factors
| Factor | Inconel 625 | SS 316L |
|---|---|---|
| High-temperature oxidation | Higher capability; service-dependent | Lower than 625; service-dependent |
| Chloride SCC | High resistance in many chloride environments | More susceptible in warm chloride service |
| Localized corrosion | High resistance in many chloride/seawater environments | Lower resistance; strongly dependent on chloride and temperature |
| Mechanical strength | Generally higher; exact value depends on product standard/condition | Lower reference strength; exact value depends on product standard/condition |
| Price / alloy cost | Higher; quote by grade, form and market conditions | Lower than Alloy 625 in most commercial comparisons |
Applications of Inconel Products by Industry
| Industry | Typical components | Preferred grade |
|---|---|---|
| Oil & Gas / Offshore | Risers, subsea fittings, wellhead bolting, sour-gas piping | 625, 718; Incoloy 825 where specified |
| Petrochemical & Refining | Reformer tubes, heat exchangers, flare stacks | 600, 625; Incoloy 800H where specified |
| Chemical Processing | Caustic evaporators, acid piping, reactor vessels | 600, 625; Incoloy 825 where specified |
| Power Generation | Boiler parts, flue-gas desulphurisation, turbine seals | 625, 718 |
| Aerospace | Exhaust systems, turbine discs, engine fasteners | 718, 625 |
| Nuclear | Steam generator tubing, control-rod parts | 600, 690 |
| Heat Treatment & Furnaces | Muffles, retorts, radiant tubes, trays | 601, 600 |
| Marine | Propeller shafts, exhaust ducts, seawater systems | 625 |
Standards, Certification & Documentation
| Area | Standards / documents |
|---|---|
| Material | Use the grade/product-form standards listed under Standards by Grade & Form. Do not state blanket compliance with every ASTM/ASME/AMS/EN/DIN standard. |
| Dimensions | ASME B16.5, B16.9, B16.11 and B16.47 where applicable to the component. Pipe/tube dimensions must follow the governing material/dimensional specification stated on the order. |
| Sour service | NACE MR0175 / ISO 15156 only where the project requires sour-service qualification and the selected alloy/product condition meets the applicable requirements. |
| Documentation | EN 10204 3.1 MTC and heat traceability where ordered; EN 10204 3.2, heat-treatment records, PMI and TPI reports where specified and applicable. |
| Company | ISO 9001:2015 certified — verify the current certificate number, scope and validity internally before publishing those details. |
Fabrication & Machining Notes for Inconel Alloys
Inconel alloys can work-harden during machining and have relatively low thermal conductivity, so fabrication commonly requires rigid setups, sharp tooling, controlled feeds and adequate cooling. Welding procedure, filler metal and heat-treatment requirements vary by grade; Inconel 718 is precipitation-hardening and its final properties depend strongly on material condition and heat treatment. Confirm WPS/PQR, filler metal and any post-weld treatment against the grade, product form and project specification.
Quality Control & Traceability Workflow
-
Approved mill
sourcing -
Heat number
& MTC check -
PMI / XRF
alloy verification When specified -
Dimensional &
visual inspection Against order requirement -
UT / DPT /
hydrostatic testing Where standard or PO requires -
Marking, packing
& dispatch With ordered documentation
Inconel Products Price & RFQ Information
Inconel product pricing depends on alloy grade, product form, dimensions, material condition or heat treatment, quantity, testing/certification and current nickel/alloy market inputs. Inconel 718 and other precipitation-hardened products can also vary by solution/age condition and machining requirements.
For a current quotation, send the grade/UNS number, product form, size or dimensions, quantity, applicable ASTM/AMS/ASME standard, material condition, testing/certification and delivery destination.
FAQs About Inconel Products
Inconel alloys are used in chemical processing, aerospace, power generation, heat-treatment equipment and marine applications. They are selected for their resistance to corrosion, oxidation and elevated temperatures.
Neither material is universally better. Inconel is generally preferred for high-temperature and corrosive environments, while titanium is valued for its low density, high strength-to-weight ratio and corrosion resistance.
Inconel is not the single strongest metal. Different Inconel grades offer different combinations of strength, corrosion resistance and high-temperature performance depending on the application.
Inconel has high resistance to corrosion and oxidation and does not rust like ordinary carbon steel. However, its corrosion resistance varies by alloy grade and service environment.
Inconel can be difficult to weld because its low thermal conductivity and high work-hardening characteristics can increase heat concentration and distortion during welding. Proper welding procedures and suitable filler materials are important.
INCONEL® and INCOLOY® are separate Special Metals alloy families. This page focuses on Inconel 600, 601, 625 and 718. Incoloy 800/800H/800HT and 825 should be treated as related products, not as Inconel grades.
Send the alloy grade or UNS number, product form, size/dimensions, quantity, applicable material standard, condition or heat treatment, testing/certification requirement and delivery destination.
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