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Nickel Alloy Grade Data Sheet

Nimonic 263

Nimonic 263 is commonly specified for welded and fabricated components requiring a balanced combination of elevated-temperature strength, creep resistance, oxidation resistance and ductility. This age-hardenable nickel-chromium-cobalt-molybdenum alloy offers good formability and weldability compared with many high-strength precipitation-hardened superalloys. Typical applications include gas-turbine combustion chambers, casings, rings, exhaust ducting, afterburner components, industrial furnace parts and other high-temperature sheet and forged assemblies.

 

 

 

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Material Overview

Nimonic 263 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

Nimonic 263 is commonly specified for welded and fabricated components requiring a balanced combination of elevated-temperature strength, creep resistance, oxidation resistance and ductility. This age-hardenable nickel-chromium-cobalt-molybdenum alloy offers good formability and weldability compared with many high-strength precipitation-hardened superalloys. Typical applications include gas-turbine combustion chambers, casings, rings, exhaust ducting, afterburner components, industrial furnace parts and other high-temperature sheet and forged assemblies.

 

 

 

Nimonic 263

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

Nimonic 263 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 Nimonic 263
Nickel Ni Balance Base element providing structural stability, ductility and corrosion resistance.
Cobalt Co 19.0-21.0 Supports solid-solution strength and elevated-temperature phase stability.
Chromium Cr 19.0-21.0 Provides oxidation and high-temperature corrosion resistance.
Molybdenum Mo 5.60-6.10 Provides solid-solution strengthening and improves creep resistance.
Titanium Ti 1.90-2.40 Forms the gamma-prime precipitates responsible for age-hardening response.
Aluminum Al 0.60 max Works with titanium in precipitation strengthening and supports oxidation resistance.
Aluminum + Titanium Al + Ti 2.40-2.80 Controls the total gamma-prime-forming element content.
Carbon C 0.04-0.08 Supports carbide formation and grain-boundary strength.
Iron Fe 0.70 max Controlled residual element in the nickel-base matrix.
Manganese Mn 0.60 max Controlled minor element used during alloy production.
Silicon Si 0.40 max Controlled minor element affecting processing and oxidation behavior.
Copper Cu 0.20 max Controlled residual element.
Boron B 0.005 max Minor addition supporting grain-boundary strength and creep performance.
Sulfur S 0.007 max Closely controlled impurity for hot-workability and weldability.

 

 

 

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 8.36 g/cm3 0.302 lb/in3 Room temperature
Melting Range 1300-1355 °C 2372-2471 °F Solidus to liquidus
Specific Heat 461 J/kg·°C Approx. 0.110 Btu/lb·°F At 20 °C
Thermal Conductivity 11.72 W/m·°C Approx. 81.3 Btu·in/ft2·h·°F At 20 °C, fully heat treated
Electrical Resistivity 115 µΩ·cm Approx. 692 ohm-cmil/ft At 20 °C
Dynamic Modulus of Elasticity Approx. 221 GPa Approx. 32.1 x 103 ksi Fully heat-treated sheet at 20 °C
Mean Thermal Expansion Approx. 11.0 x 10-6/°C Approx. 6.1 x 10-6/°F Sheet between 20 and 100 °C

 

 

 

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 Notes
Bar – solution treated and aged Approx. 1004 MPa Approx. 585 MPa Approx. 45% Representative room-temperature average
Sheet – solution treated and aged Approx. 973 MPa Approx. 580 MPa Approx. 39% Representative room-temperature average
Bar – tested at 800 °C Approx. 587 MPa Approx. 460 MPa Product dependent Representative elevated-temperature value
Sheet – tested at 800 °C Approx. 556 MPa Approx. 440 MPa Product dependent Representative elevated-temperature value
Cold-drawn wire – solution treated and aged By specification and temper By specification By specification Properties depend on wire diameter and cold reduction
Cold-worked tube – heat treated By BS HR 404 or purchase specification By specification By specification Properties depend on dimensions and manufacturing route

 

 

 

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 Nimonic 263 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 BS HR 206, SAE AMS 5872, DIN 17750, AECMA PrEN 2203 / 2418 Hot rolled plate, cold rolled sheet, strip and cut blanks EN 10204 3.1, chemical, mechanical and heat-treatment records
Rod, Bar, Wire BS HR 10, DIN 17752 / 17753 / 17754, AECMA PrEN 2199 / 2200 / 2201 Round bar, rod, wire, billet and forging stock MTC, PMI, mechanical test and dimensional inspection
Pipe & Tube BS HR 404, DIN 17751, AECMA PrEN 2202 or customer specification Cold-worked tube, seamless tube and drawing-based tubular components Hydrotest, eddy current test, dimensional inspection and MTC
Forgings BS HR 10, DIN 17753 / 17754 or customer-approved aerospace specification Rings, discs, blocks, shafts and custom forgings Heat-treatment record, UT, mechanical test, PMI and MTC
Welding Products Matching Nimonic Filler Metal 263 or project-approved welding specification TIG wire, MIG wire and straight-length filler wire Mill certificate, chemistry verification and welding inspection
General Designations DIN 17744, UNS N07263, W.Nr. 2.4650, NiCo20Cr20MoTi Material identification and cross-reference requirements Specification comparison and purchaser approval may be required

 

 

 

Available Product Forms

Nimonic 263 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 6-610 mm, wall thickness or schedule to specification; large fabricated sizes subject to review Seamless, cold worked, welded or fabricated, solution treated and aged Combustion systems, exhaust ducting, turbine equipment and high-temperature tubular assemblies View Pipe & Tube
Round Bar Diameter 3-350 mm, custom cut lengths and larger forged sections available Hot rolled, extruded, forged, solution treated, aged, peeled or ground Turbine components, shafts, rings, fasteners and machined high-temperature parts View Round Bar
Sheet & Plate Thickness 0.5-100 mm, custom widths, lengths and cut profiles Cold rolled, hot rolled, solution treated, aged, pickled or polished Combustion chambers, turbine casings, exhaust systems, heat shields and welded assemblies View Sheet & Plate
Strip & Foil Thickness 0.02-3 mm, slit widths and coil weights to specification Cold rolled, solution treated, aged or spring temper Seals, diaphragms, heat shields, clips and formed hot-section components View Strip & Foil
Wire Diameter 0.1-15 mm, supplied in coils, spools or straight lengths Cold drawn, solution treated, aged, bright or pickled Springs, fasteners, retaining components and formed high-temperature parts View Wire
Fasteners Standard and custom bolts, nuts, screws, studs, pins and washers Hot forged, cold formed or machined, solution treated and aged Gas turbines, combustion systems and high-temperature welded assemblies View Fasteners
Fittings ASME, EN and drawing-based dimensions, including custom fabricated sizes Machined, formed or welded, with project-specified heat treatment Hot-gas piping, exhaust systems, turbine equipment and industrial furnaces View Fittings
Flanges ASME B16.5, ASME B16.47, EN and custom drawing dimensions Forged, solution treated, aged, machined and inspected Combustion equipment, hot-gas systems and high-temperature process connections View Flanges
Forgings Rings, discs, billets, blocks, shafts and custom forgings up to mill capability Forged, solution treated and aged, rough machined or finish machined Turbine rings, casings, structural parts and heavily loaded hot-section components View Forgings
Welding Wire Diameter 0.8-4.0 mm, supplied in spool, coil or straight length Clean bright finish, precision drawn and chemistry controlled TIG and MIG welding of Nimonic 263 sheet, tube and fabricated assemblies View Welding Wire

 

 

 

Material Selection Guide

When to consider Nimonic 263

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 Nimonic 263 Helps Common Product Form Buyer Note
Welded high-temperature structures Offers good weldability and useful post-weld ductility compared with many precipitation-hardened superalloys. Sheet, plate, tube and welding wire Specify welding process, filler metal, joint thickness and post-weld heat treatment.
Gas-turbine combustion components Combines oxidation resistance, creep strength and formability for complex hot-section fabrications. Sheet, strip, tube and fabricated assemblies Confirm operating temperature, pressure, vibration and thermal-cycle requirements.
Elevated-temperature creep service Molybdenum solid-solution strengthening and gamma-prime precipitation provide useful creep resistance. Bar, forgings, rings and structural components Provide operating stress, required life and maximum metal temperature.
Complex sheet-metal fabrication Good solution-treated ductility supports forming before the final aging treatment. Sheet, strip and cold-worked tube Confirm forming sequence, intermediate annealing and final dimensional tolerances.
High-temperature corrosion and oxidation Approximately 20% chromium provides a protective oxide scale in many hot-gas environments. Sheet, plate, tube and fabricated components Review fuel chemistry, sulfur level, deposits and thermal cycling.
Matching-alloy repair and fabrication welding Matching Nimonic Filler Metal 263 is available for qualified TIG and MIG procedures. Welding wire, sheet, plate and tube Use clean shielding gas and avoid argon-oxygen or carbon-dioxide mixtures.

 

 

 

Why Choose Us

Supply and quality support for Nimonic 263

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.

Related Nickel Alloys

Compare nearby grades and product forms

Explore related grades and product forms for comparison.

FAQ

Nimonic 263 questions from buyers

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

Nimonic 263 is mainly used for gas-turbine combustion chambers, casings, rings, exhaust ducting, afterburner components, heat shields, industrial furnace parts and welded assemblies requiring elevated-temperature strength and good fabrication characteristics.

Yes. UNS N07263 is the standardized UNS designation for Nimonic 263. The alloy may also be identified as Alloy 263, W.Nr. 2.4650 or NiCo20Cr20MoTi.

Nimonic 263 contains approximately 6% molybdenum and was developed to provide a strong balance of creep strength, formability, weldability and post-weld ductility. Nimonic 90 provides high creep strength but is generally more sensitive during welding and fabrication.

YSN128 can quote plate, sheet, strip, round bar, rod, wire, pipe, tube, forging stock, billets, rings, fasteners, flanges, fittings and matching welding wire. Drawing-based fabricated and machined components can also be discussed.

Common standards include BS HR 10 for bar and forging stock, BS HR 206 and SAE AMS 5872 for plate and sheet, BS HR 404 for tube, DIN 17750-17754 and related AECMA PrEN aerospace specifications.

A commonly referenced treatment for bar is solution treatment for 2 hours at 1150 °C followed by water quenching, then aging for 8 hours at 800 °C followed by air cooling. Sheet normally uses a shorter solution-treatment time before the same aging treatment.

Yes. Nimonic 263 is readily welded by qualified TIG and MIG procedures, and resistance spot, stitch and seam welding can also be used. Matching Nimonic Filler Metal 263 is recommended where applicable. Welding is normally performed in the solution-treated condition followed by the specified aging treatment.

Please send the grade or UNS number, product form, dimensions, quantity, applicable standard, required heat treatment, mechanical-property requirements, certificate requirements, destination and service temperature. Drawings, welding requirements and inspection requirements are also welcome.

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