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Nickel Alloy Grade Data Sheet

Inconel X-750

Inconel X-750 is a precipitation-hardenable nickel-chromium alloy specified for high strength, oxidation resistance and corrosion resistance at elevated temperatures. Its additions of titanium, aluminum and niobium enable age hardening, providing useful tensile, creep and rupture properties for gas turbines, nuclear systems, industrial springs, high-temperature fasteners, pressure vessels and rocket-engine components. The alloy is available in sheet, plate, strip, bar, rod, pipe, tube, wire, forgings and custom-machined forms.

 

 

 

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Material Overview

Inconel X-750 material profile

A concise grade introduction for buyers who need to confirm composition, properties, standards, available forms and suitable applications before sending an inquiry.

Engineering profile

Inconel X-750 is a precipitation-hardenable nickel-chromium alloy specified for high strength, oxidation resistance and corrosion resistance at elevated temperatures. Its additions of titanium, aluminum and niobium enable age hardening, providing useful tensile, creep and rupture properties for gas turbines, nuclear systems, industrial springs, high-temperature fasteners, pressure vessels and rocket-engine components. The alloy is available in sheet, plate, strip, bar, rod, pipe, tube, wire, forgings and custom-machined forms.

 

 

 

Inconel X-750

Technical data on this page is for material selection reference. Final acceptance values should be confirmed by the purchase standard, heat treatment condition, product form, size and material test certificate.

Chemical Composition

Inconel X-750 composition range

The following table shows common limiting composition values for Alloy 625 / UNS N06625. Actual product chemistry is reported by heat on the material test certificate.

Element Symbol Typical Requirement Role in Alloy X-750
Nickel + Cobalt Ni + Co 70.0 min Forms the alloy base and provides corrosion resistance and high-temperature stability.
Chromium Cr 14.0-17.0 Improves oxidation resistance and resistance to high-temperature corrosion.
Iron Fe 5.0-9.0 Balances the nickel-chromium matrix and contributes to alloy strength.
Titanium Ti 2.25-2.75 Promotes precipitation hardening and elevated-temperature strength.
Niobium + Tantalum Nb + Ta 0.70-1.20 Supports age-hardening response and improves creep and rupture properties.
Aluminum Al 0.40-1.00 Combines with titanium to form strengthening precipitates during aging.
Cobalt Co 1.00 max Controlled as part of the nickel-plus-cobalt requirement.
Carbon C 0.08 max Controlled to balance strength, ductility and fabrication performance.
Manganese Mn 1.00 max Controlled minor alloying and deoxidizing element.
Silicon Si 0.50 max Controlled minor element and deoxidizer.
Copper Cu 0.50 max Controlled residual element.
Sulfur S 0.010 max Restricted impurity for improved hot workability and material quality.

 

 

 

Physical Properties

Key physical and thermal data

These values help customers compare density, thermal behavior, magnetic response and conductivity during early material selection.

Property Metric Value Imperial / Notes Condition
Density 8.28 g/cm3 0.299 lb/in3 Room temperature
Melting Range 1393-1427 °C 2540-2600 °F Typical range
Specific Heat Approx. 431 J/kg·°C Approx. 0.103 Btu/lb·°F Approx. 20 °C
Thermal Conductivity Approx. 12.0 W/m·°C Approx. 83 Btu·in/ft2·h·°F Approx. 20 °C
Electrical Resistivity Approx. 121 µΩ·cm Approx. 729 ohm-cmil/ft Approx. 20 °C
Modulus of Elasticity Approx. 214 GPa Approx. 31.0 x 103 ksi Room temperature
Mean Thermal Expansion Approx. 12.6 µm/m·°C Approx. 7.0 µin/in·°F 20-100 °C
Magnetic Permeability Approx. 1.003 Essentially non-magnetic Room temperature, condition dependent

 

 

 

Mechanical Properties

Room-temperature mechanical properties

Mechanical properties vary with product form, size, processing route and heat treatment. The table below summarizes commonly referenced nominal values for material selection.

Product Form / Condition Tensile Strength Yield Strength, 0.2% Elongation Hardness
Sheet, plate and strip – solution annealed 910-1100 MPa 345-620 MPa 20-35% Condition dependent
Rod and bar – solution treated 965 MPa min 585 MPa min 20% min By specification
Rod and bar – precipitation hardened 1170 MPa min 790 MPa min 15% min Approx. 302-401 HB
Rod and bar – high-strength aged condition 1240 MPa min 1035 MPa min 12% min Approx. 331-444 HB
Spring wire – cold worked and aged 1300-1700 MPa By size and temper 2-10% Approx. 35-48 HRC
Forgings – solution treated and aged 1100-1300 MPa 725-1035 MPa 12-25% By heat-treatment specification

 

 

 

For pressure equipment, aerospace parts or project-specific acceptance, use the minimum requirements in the specified ASTM, ASME, AMS, EN or customer drawing rather than nominal values.

Standards & Specifications

Common Inconel X-750 standards by product form

YSN128 can quote Alloy 625 products according to ASTM, ASME, AMS, EN, DIN, ISO or customer drawing requirements. Certificate scope can be matched to the purchase order.

Product Form Common Standards Typical Supply Item Certificate / Inspection
Plate, Sheet, Strip ASTM B670 / ASME SB670, AMS 5542 Hot rolled plate, cold rolled sheet, strip and cut blanks EN10204 3.1, chemical analysis and mechanical testing
Rod and Bar ASTM B637 / ASME SB637, AMS 5667, AMS 5668, AMS 5669 Round bar, rod, machined bar and heat-treated stock MTC, heat-treatment record, PMI and dimensional inspection
Wire and Spring Wire AMS 5698, AMS 5699 and customer specifications Cold-drawn wire, spring wire, coil and straight-length wire Chemical, tensile, dimensional and surface inspection
Seamless Tube AMS 5582 and project-specific tubing requirements Seamless tube, instrumentation tube and fabricated tubular parts Hydrostatic or pneumatic test, eddy-current test and MTC
Forgings and Rings ASTM B637 / ASME SB637, AMS 5667, AMS 5668, AMS 5669 Forged rings, discs, blocks, shafts and drawing-based forgings Heat-treatment record, ultrasonic testing, PMI and MTC
Fasteners and Bolting ASTM F2281 and customer or project specifications Bolts, studs, nuts, screws, washers and special fasteners Mechanical testing, hardness, PMI and dimensional inspection

 

 

 

Available Product Forms

Inconel X-750 supply range

Review available product forms, size ranges, standards and delivery options for this alloy.

Form Common Size Range Delivery Condition Typical Applications Page Link
Pipe & Tube OD 6-762 mm, wall thickness or schedule to specification Seamless or welded, solution treated, pickled or custom heat treated High-temperature tubing, nuclear components and gas-turbine assemblies View Pipe & Tube
Round Bar Diameter 3-500 mm, custom cut lengths available Hot rolled, forged, solution treated, aged, peeled or polished Turbine parts, shafts, fasteners, springs and machined components View Round Bar
Sheet & Plate Thickness 0.5-150 mm, custom widths and lengths Hot rolled, cold rolled, solution annealed, pickled or polished Gas-turbine components, pressure vessels, heat shields and formed parts View Sheet & Plate
Strip & Foil Thickness 0.02-5 mm, precision slit widths available Cold rolled, solution annealed, aged or spring temper High-temperature springs, clips, diaphragms, seals and flexible parts View Strip & Foil
Wire Diameter 0.1-20 mm, coil, spool or straight-length supply Cold drawn, solution treated, aged, bright or pickled Coil springs, retaining rings, wire forms and high-temperature fasteners View Wire
Fasteners Standard and custom bolts, nuts, screws, studs and washers Solution treated and precipitation hardened, machined or rolled thread Gas turbines, nuclear systems, pressure vessels and hot-section equipment View Fasteners
Fittings ASME, ANSI, EN and custom drawing dimensions Formed, forged or machined, solution treated and aged as specified High-temperature piping, nuclear equipment and pressure-system connections View Fittings
Flanges ASME B16.5, ASME B16.47, EN and custom large-diameter designs Forged, solution treated, aged, machined and inspected Pressure systems, turbine equipment and high-temperature process connections View Flanges
Forgings Rings, discs, blocks and shafts up to 2000 mm or drawing requirements Open-die or closed-die forged, solution treated, aged and machined Turbine rotors, rocket-engine parts, pressure components and nuclear hardware View Forgings
Welding Wire Diameter 0.8-4.0 mm, spool, coil or straight length Precision drawn, clean bright finish and controlled chemistry Specialized fabrication, repair procedures and application-specific joining View Welding Wire

 

 

 

Material Selection Guide

When to consider Inconel X-750

This guide helps buyers connect service conditions with the typical advantage of Alloy 625. Final selection should consider medium concentration, temperature, pressure, fabrication, availability and budget.

Service Requirement Why Alloy X-750 Helps Common Product Form Buyer Note
High-temperature springs Precipitation hardening provides high strength and useful stress-relaxation resistance at elevated temperatures. Wire, strip, spring bar and formed components Specify operating temperature, spring load, dimensions and required fatigue life.
Gas-turbine components The alloy combines elevated-temperature strength with oxidation and corrosion resistance. Bar, sheet, plate, forgings and fasteners Confirm heat treatment, grain requirements and inspection class.
High-temperature fasteners Age-hardened material retains useful strength in demanding thermal and mechanical service. Bar, wire, bolts, studs, nuts and washers Provide the fastener standard, thread form, service temperature and test requirements.
Nuclear reactor hardware Alloy X-750 is used for springs, hold-down components and other reactor hardware requiring strength and corrosion resistance. Bar, wire, forgings, springs and machined parts Specify the applicable nuclear standard, heat treatment and supplementary testing.
Rocket and aerospace equipment High strength and oxidation resistance support service in hot, highly stressed assemblies. Sheet, bar, forgings, fasteners and custom components Confirm temperature cycles, loading, traceability and nondestructive testing.
Low-temperature high-strength service The nickel-rich matrix maintains good toughness and useful mechanical properties over a wide temperature range. Bar, plate, wire, fasteners and forgings Confirm impact-testing temperature and the required heat-treatment condition.

 

 

 

Why Choose Us

Supply and quality support for Inconel X-750

For ranking traffic, buyers need more than a data sheet. This section gives clear trust signals for procurement, engineering and quality teams.

STASTM / ASME / AMS / EN

Quotation can be matched to project standards and product form specifications.

MTEN10204 3.1 MTC

Heat number, chemistry, mechanical properties and inspection records can be supplied.

QCPMI & Inspection

PMI, UT, dimensional inspection, visual inspection and packing check are available.

CSCustom Size

Cutting, machining allowance, rough machining and drawing-based supply can be arranged.

EPExport Packing

Wooden case, bundle, waterproof protection and international shipping documents.

RFFast Technical Reply

Send grade, size, standard, quantity and destination for a practical quotation route.

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FAQ

Inconel X-750 questions from buyers

Find practical answers about procurement, standards, fabrication and industrial applications.

Inconel X-750 is commonly used for gas-turbine components, high-temperature springs, nuclear reactor hardware, rocket-engine parts, pressure vessels, hot-section fasteners and other components requiring high strength and oxidation resistance.

Yes. UNS N07750 is the standardized UNS designation for Inconel X-750. The alloy may also be identified as Alloy X-750, Nickel Alloy X-750, W.Nr. 2.4669 or NiCr15Fe7TiAl.

Alloy X-750 is strengthened through solution heat treatment followed by controlled aging. Titanium, aluminum and niobium promote the formation of strengthening precipitates, giving the alloy higher tensile, creep and stress-rupture strength.

YSN128 can quote sheet, plate, strip, round bar, rod, wire, spring wire, pipe, tube, forgings, rings, flanges, fittings and custom-machined components. Cutting, heat treatment and drawing-based production can also be discussed.

Common specifications include ASTM B637 for bar and forgings, ASTM B670 for plate, sheet and strip, AMS 5542, AMS 5667, AMS 5668, AMS 5669, AMS 5698, AMS 5699 and AMS 5582. The correct standard depends on product form and heat-treatment condition.

Yes, but welding must account for the alloy's age-hardening response and possible heat-affected-zone cracking. Welding is normally performed in a suitable solution-treated condition, followed by the heat treatment required by the component specification. Filler metal and procedure qualification should be selected for the actual service conditions.

Yes. Material can be supplied solution treated, stabilized, precipitation hardened or in another specified condition. The required heat-treatment cycle should be stated because mechanical properties vary significantly between AMS 5667, AMS 5668, AMS 5669 and other conditions.

Please send the product form, dimensions, quantity, applicable ASTM or AMS standard, heat-treatment condition, mechanical-property requirements, inspection requirements, destination and service temperature. Drawings should be provided for forgings, fasteners and custom-machined parts.

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