High-Performance Nimonic 80A Round Bar

Product Highlights

• Nimonic 80A precipitation‑hardening nickel‑base superalloy round bar, UNS N07080 / W.Nr 2.4952, compliant with AMS 5696 & ASTM B637 bar specifications
• Ni‑Cr‑Al‑Ti alloy system, strengthened by γ′‑phase precipitates; excellent creep‑rupture strength up to service temperature 815 °C
• Superior high‑temperature oxidation resistance, stable microstructure under long‑term thermal cyclic loading
• Supplied in solution‑annealed soft condition for full‑range CNC machining prior to multi‑step aging heat‑treatment
• Good ductility, acceptable weldability; vacuum‑remelted premium ingot option available for critical aerospace components
• Custom diameter, length & complete CNC turning, milling, threading per customer CAD/PDF drawings
• Premium raw stock for gas‑turbine parts, high‑temp fasteners, engine exhaust valves, nuclear‑power and thermal‑process equipment components

Product Overview

This series of Nimonic 80A round bars are manufactured by hot rolling, forging or cold‑drawing from air‑melted or vacuum‑remelted superalloy ingots, followed by solution annealing to achieve uniform austenitic matrix microstructure. Standard delivery state is solution‑annealed soft blank for rough & finish CNC machining. Final high‑temperature mechanical properties are obtained by multi‑stage stabilization plus aging precipitation hardening heat‑treatment.

Nimonic 80A is classic wrought precipitation‑hardening nickel‑chromium superalloy. Aluminum‑titanium elements form nano‑sized γ′ intermetallic precipitates, delivering outstanding creep‑rupture resistance under sustained high‑temperature load up to 815°C. It exhibits reliable high‑temperature anti‑oxidation performance. Widely processed into gas‑turbine blades & rings, high‑strength high‑temperature bolts, internal‑combustion‑engine exhaust valves, nuclear‑plant support components and hot‑working tool blanks for aerospace, power‑generation, automotive high‑performance engine and nuclear‑energy industries.

Material Grade Characteristics – Nimonic 80A (UNS N07080 / 2.4952)

• Precipitation‑hardening nickel‑base superalloy strengthened by Ni₃(Al,Ti) gamma‑prime precipitates after multi‑step aging cycle
• Solution‑annealed soft state for all machining workpieces before stabilization & aging heat‑treatment
• Excellent creep‑rupture strength and oxidation resistance for long‑term service up to 815 °C
• Good thermal‑fatigue resistance for components under repeated heating‑cooling cyclic conditions
• Vacuum‑remelted variant available for aerospace high‑reliability critical‑part requirements, minimizing internal inclusions
• Acceptable weldability; full post‑weld solution‑anneal plus aging is recommended for maximum high‑temperature performance
• Not suitable for heavy sulphur‑containing corrosive flue‑gas environments

Chemical Composition (Weight %)

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Mechanical Properties (ASTM B637 / AMS 5696 Heat‑Treatment States)

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Unified Base Delivery Standard: Hot Rolled / Forged / Cold Drawn, Solution Annealed, Stress‑Relieved, Pickled

Related Material Grades

• Nimonic Series: Nimonic 75, Nimonic 80A, Nimonic 90, Nimonic 105, Nimonic 263
• Inconel Series: 600, 601, 625, 718, X‑750
• Incoloy Series: 800H / 800HT, 825, 925
• Hastelloy Series: C4, C22, C276, B3
• Super‑Austenitic / Duplex: 254SMO, 2205, 2507, S32760
• PH Stainless Steel:17‑4PH,15‑5PH
• High‑Temperature Alloy Steel: 4140, F22, F91

Key Advantages

1 Outstanding High‑Temperature Creep‑Rupture Performance
Gamma‑prime precipitation hardening provides sustained high strength and creep resistance for long‑term service up to 815 °C, well suited for gas‑turbine and hot‑cycling components.

2 Excellent High‑Temperature Oxidation Resistance
Chromium‑rich surface protective oxide scale retains stability under repeated heating‑cooling cycles, resisting high‑temperature scaling.

3 Multi‑Step Aging Customizable Properties
Machine from soft solution‑annealed blank; apply standard solution‑stabilization‑aging cycle to reach target high‑temperature mechanical requirements.

4 Premium Vacuum‑Remelted Option
Vacuum‑arc‑remelted ingot minimizes non‑metallic inclusions for aerospace critical‑component reliability.

5 Good Fabrication Compatibility
Adequate machinability in solution‑annealed state; can be welded, post‑weld full heat‑treatment recommended for optimal service performance.

Typical Applications

• Aerospace & Gas Turbine: Turbine blades, turbine rings, casing high‑temperature bolts, gas‑turbine hot‑section component blanks
• Automotive High‑Performance Engine: Turbo‑charged engine exhaust valves, hot‑valve spindle blanks
• Nuclear Energy: Reactor internal support bars, high‑temperature fastener raw stock
• Industrial Thermal Equipment: High‑temp furnace fixture blanks, hot‑working die‑casting insert cores
• Power‑Generation: Steam‑plant high‑stress bolt blanks, thermal‑cycling mechanical component preforms

Processing Service

We provide integrated hot rolling / forging / cold‑drawn Nimonic 80A round‑bar production, full custom CNC machining per customer CAD/PDF drawings:

• Fixed‑length cutting, facing, centering, external turning & chamfering
• Precision threading, spline machining, cylindrical grinding & surface polishing
• Custom multi‑step solution‑annealing, stabilization and aging heat‑treatment service
• Pickling, passivation anti‑corrosion surface finishing; vacuum‑remelted material sourcing upon request

We supply Nimonic 80A round‑bar blanks and semi‑finished machined parts for aerospace, power‑generation, automotive and nuclear‑energy global industrial clients.

Quality Assurance

• 100% UT + Eddy‑Current dual inspection for rolling / forging internal segregation, inclusion and crack defects
• Full‑batch tensile, yield, elongation & hardness mechanical testing for each heat lot & heat‑treatment condition
• High‑precision micrometer & CMM for diameter, straightness & dimensional‑tolerance control
• Spectrometer full‑spectrum chemical‑composition verification per heat number; vacuum‑remelted ingot trace‑element audit if required
• Metallographic gamma‑prime precipitate microstructure inspection after aging heat‑treatment

Mill Test Certificate EN 10204 3.1 can be issued and delivered together with shipment documents before delivery.

Packing & Delivery

Packing ‑ Inner: Independent anti‑rust plastic sleeve + waterproof film full wrap for bar‑surface scratch protection ‑ Outer: Reinforced fumigated wooden pallet with separation strips to prevent collision & bending deformation ‑ Custom heavy‑duty export packaging for extra‑long / large‑diameter bars available upon request

Lead Time
Normally 15‑50 working days after receiving advance payment. Exact lead time depends on bar diameter, length, order quantity, vacuum‑remelted requirement and custom aging / machining demands.

Request Custom Quotation

Please specify material melting route (air‑melt / vacuum‑remelt), heat‑treatment requirement, bar dimension and engineering drawings. Our superalloy metallurgy team will send competitive factory price within 24 hours. Free high‑temperature‑service material‑matching technical consultation!