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Nickel Alloy Grade Data Sheet

Nimonic 80A

Nimonic 80A is commonly specified for components requiring high tensile strength, creep resistance and oxidation resistance at elevated temperatures. This wrought, age-hardenable nickel-chromium alloy is strengthened by controlled additions of titanium, aluminum and carbon and is intended for service at temperatures up to approximately 815 °C. Typical applications include gas-turbine blades, rings and discs, high-temperature bolts, boiler-tube supports, die-casting tooling, exhaust valves and other heavily loaded hot-section components.

 

 

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Material Overview

Nimonic 80A 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 80A is commonly specified for components requiring high tensile strength, creep resistance and oxidation resistance at elevated temperatures. This wrought, age-hardenable nickel-chromium alloy is strengthened by controlled additions of titanium, aluminum and carbon and is intended for service at temperatures up to approximately 815 °C. Typical applications include gas-turbine blades, rings and discs, high-temperature bolts, boiler-tube supports, die-casting tooling, exhaust valves and other heavily loaded hot-section components.

 

 

Nimonic 80A

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 80A 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 80A
Nickel Ni Balance Base element providing structural stability, ductility and corrosion resistance.
Chromium Cr 18.0-21.0 Provides resistance to oxidation and high-temperature corrosion.
Titanium Ti 1.80-2.70 Combines with aluminum to form the strengthening gamma-prime phase.
Aluminum Al 1.00-1.80 Supports precipitation hardening and improves oxidation resistance.
Carbon C 0.10 max Contributes to carbide formation and grain-boundary strength.
Iron Fe 3.0 max Controlled residual element in the nickel-chromium matrix.
Cobalt Co 2.0 max Controlled residual element.
Manganese Mn 1.0 max Controlled minor element used during alloy production.
Silicon Si 1.0 max Controlled minor element affecting processing and oxidation behavior.
Copper Cu 0.20 max Controlled residual element.
Zirconium Zr 0.15 max Controlled minor addition supporting grain-boundary performance.
Boron B 0.008 max Minor addition used to improve grain-boundary strength and creep performance.
Sulfur S 0.015 max Controlled impurity for hot-workability and mechanical performance.

 

 

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 8.19 g/cm3 0.296 lb/in3 Room temperature
Melting Range 1320-1365 °C 2408-2489 °F Typical range
Specific Heat 448 J/kg·°C 0.107 Btu/lb·°F At 20 °C
Thermal Conductivity 11.2 W/m·°C Approx. 77.7 Btu·in/ft2·h·°F At 20 °C, fully heat treated
Electrical Resistivity 124 µΩ·cm 746 ohm-cmil/ft At 20 °C
Dynamic Modulus of Elasticity Approx. 222 GPa Approx. 32.2 x 103 ksi Cold-rolled sheet at 20 °C
Mean Thermal Expansion Approx. 12.7 x 10-6/°C Approx. 7.1 x 10-6/°F Between 20 and 100 °C, fully heat treated

 

 

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 / Notes
Cold-rolled sheet – solution treated Approx. 802 MPa Approx. 374 MPa Approx. 52% Approx. 211 HV; representative test data
Sheet – solution treated and aged Approx. 950-1200 MPa Approx. 600-850 MPa 15-35% Depends on sheet thickness and heat-treatment cycle
Extruded bar – heat treated Approx. 1000-1250 MPa Approx. 650-900 MPa 15-30% Typical room-temperature range
Forged bar – heat treated Approx. 1000-1250 MPa Approx. 650-950 MPa 15-30% Section size and forging process dependent
Wire – cold worked / aged By specification and temper By specification By specification Strength depends strongly on cold reduction and final aging
Pipe and tube – heat treated By BS HR 401 or purchase specification By specification By specification Final 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 80A 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 201, AECMA PrEN 2191 or customer specification Cold rolled sheet, strip, plate and cut blanks EN 10204 3.1, chemical, mechanical and heat-treatment records
Rod, Bar, Wire BS 3076, BS HR 1, ASTM B637, AECMA PrEN 2188 / 2189 / 2190 / 2396 / 2397 Round bar, flat bar, hexagon, rod, wire and forging stock MTC, PMI, mechanical test and dimensional inspection
Pipe & Tube BS HR 401 or approved customer specification Seamless tube, welded tube and drawing-based tubular parts Hydrotest, eddy current test, dimensional inspection and MTC
Forgings ASTM B637, BS HR 1, BS HR 601 or customer specification Rings, discs, blocks, shafts and turbine forgings Heat-treatment record, UT, mechanical test, PMI and MTC
Machined Fittings & Flanges Applicable dimensional standard plus approved N07080 raw-material specification Flanges, rings, fittings, valve parts and special machined components Dimensional inspection, PMI, NDT and MTC
General Designations DIN 17742, AFNOR NC20TA23, UNS N07080, W.Nr. 2.4952 / 2.4631 Material identification and cross-reference requirements Specification comparison and purchaser approval may be required

 

 

Available Product Forms

Nimonic 80A 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, welded or fabricated, solution treated and aged as specified Boiler-tube supports, hot-gas systems, turbine equipment and high-temperature 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 High-temperature bolts, turbine components, shafts and exhaust valves 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 Gas-turbine fabrications, heat shields, hot-section components and industrial tooling 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 High-temperature springs, seals, clips, retainers and formed 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 High-temperature fasteners, springs, retaining parts and formed wire components 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, power-generation equipment, furnaces and high-temperature bolted joints View Fasteners
Fittings ASME, EN and drawing-based dimensions, including custom heavy-wall parts Machined, formed or welded, with project-specified heat treatment High-temperature piping, turbine systems and industrial thermal equipment View Fittings
Flanges ASME B16.5, ASME B16.47, EN and custom drawing dimensions Forged, solution treated, aged, machined and inspected Hot-gas systems, turbine equipment, pressure connections and furnace assemblies View Flanges
Forgings Rings, discs, blocks, shafts and custom forgings up to mill capability Forged, solution treated and aged, rough machined or finish machined Turbine blades, rings, discs, tooling inserts and heavily loaded hot-section parts 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 Qualified fabrication and repair welding of Nimonic 80A assemblies View Welding Wire

 

 

Material Selection Guide

When to consider Nimonic 80A

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 80A Helps Common Product Form Buyer Note
High-temperature creep resistance Gamma-prime precipitation strengthening provides useful creep and stress-rupture strength at elevated temperatures. Bar, forgings, rings, discs and fasteners Provide operating stress, temperature, required life and thermal-cycle information.
Gas-turbine components Combines elevated-temperature strength with oxidation and hot-corrosion resistance. Forgings, bar, sheet, rings and discs Confirm the applicable aerospace specification and approved heat-treatment route.
High-temperature bolting Age hardening provides higher tensile and relaxation resistance than solid-solution-strengthened alloys such as Nimonic 75. Bar, wire, bolts, studs and nuts Specify thread method, proof load, service temperature and required mechanical properties.
Automotive and industrial exhaust valves Retains useful strength while resisting oxidation and repeated thermal cycling. Bar, forgings and finish-machined parts Confirm valve design, operating temperature and surface-treatment requirements.
Boiler and heat-exchanger tube supports Provides elevated-temperature strength, oxidation resistance and dimensional stability. Bar, forgings, fasteners and machined supports Review load, steam environment, temperature and expected service duration.
Welded high-temperature assemblies Thin sections can be joined using qualified resistance, TIG or MIG procedures. Sheet, strip, tube and welding wire Thicker sections require careful process selection because weld and heat-affected-zone cracking may occur.

 

 

Why Choose Us

Supply and quality support for Nimonic 80A

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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Compare nearby grades and product forms

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FAQ

Nimonic 80A questions from buyers

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

Nimonic 80A is used for gas-turbine blades, rings and discs, high-temperature bolts, boiler-tube supports, exhaust valves, die-casting inserts, furnace hardware and other components requiring elevated-temperature tensile and creep strength.

Yes. UNS N07080 is the standardized UNS designation for Nimonic 80A. The alloy may also be identified as Alloy 80A, W.Nr. 2.4952, W.Nr. 2.4631, NiCr20TiAl or AFNOR NC20TA23.

Nimonic 80A contains higher controlled additions of titanium and aluminum and is strengthened by gamma-prime precipitation. It provides substantially higher creep and tensile strength than Nimonic 75 but requires more precise heat treatment and more careful welding control.

YSN128 can quote plate, sheet, strip, round bar, flat bar, hexagon, rod, wire, pipe, tube, forging stock, rings, discs, fasteners, flanges and drawing-based machined components.

Common standards include ASTM B637, BS 3076 and BS HR 1 for bar and forging stock, BS HR 201 for plate and sheet, BS HR 401 for pipe and tube, BS HR 601, DIN 17742 and related aerospace specifications.

The exact heat treatment depends on the product form. A commonly referenced treatment for extruded bar is 8 hours at 1080 °C followed by air cooling, then 16 hours at 700 °C followed by air cooling. Sheet, forged bar and cold-worked products may require different solution and aging cycles.

Yes, but welding requires qualified procedures. Resistance welding and carefully controlled TIG or MIG welding are commonly applied to thin sections. Thick sections have a greater risk of weld-metal or heat-affected-zone microcracking, so alternative joining methods and post-weld heat treatment may be required.

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 and inspection requirements are also welcome.

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