80A
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80A
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- Product Description
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- Commodity name: 80A
GH80A (domestic designation, corresponding to the international designation Nimonic 80A) is a nickel-chromium based precipitation hardening superalloy. It is strengthened by the formation of a γ' phase through aluminum and titanium elements, and exhibits excellent comprehensive properties in high-temperature environments.
Product Description
GH80A (domestic grade, corresponding to international grade Nimonic 80A) is a nickel-chromium based precipitation-hardening superalloy, strengthened by γ' phase formed by aluminum and titanium elements. It exhibits excellent comprehensive performance under high-temperature environments. Its main characteristics and applications are as follows:
Excellent High-Temperature Performance
Maintains high strength and creep resistance in the 700–800℃ range, and still possesses good long-term strength and oxidation resistance at 815℃, particularly exhibiting outstanding comprehensive performance at 650–850℃.
High chromium content (18–21%) forms a dense Cr₂O₃ oxide film, effectively resisting high-temperature oxidation and corrosion by sulfur/chloride-containing media.
Physical and Mechanical Properties
Density 8.15–8.19 g/cm³ Melting Point Range 1320–1365℃ Room Temperature Mechanical Properties Tensile strength 850–1250 MPa, yield strength 600–900 MPa, elongation ≥20% High-Temperature Mechanical Properties
Temperature 650℃ Tensile Strength (MPa) 700–740 480–500 Yield Strength (MPa) 750℃ ≥450 (long-term strength) Processing and Technological Properties
Melting process: Vacuum induction melting (VIM) combined with electroslag remelting (ESR) or vacuum arc remelting (VAR), ensuring low impurities (S, P ≤ 0.015%).
Key Application Areas
● Aerospace, engine turbine blades, guide vane supports, combustion chamber flame tubes and blade locking plates, withstanding 850℃ high-speed airflow scouring.
● Spacecraft thermal protection components, high-temperature bolts and fasteners.
● Energy and industry, gas turbine turbine disks, nuclear power control rod guide frames and piping systems.
● Chemical reactor linings, heat treatment furnace rollers, suitable for alternating oxidation-reduction conditions.
● Precision components, cold-rolled tubes (coil round materials undergo multiple cold rolling + intermediate heat treatment).
● Precision wire (h8 tolerance grade) used for springs and connectors.
Technical Specifications and Standards
● China GB/T 14992
● GJB 3165A Grade specification, cold-drawn bar
● International AMS 5842 (US standard)
● DIN 2.4952 (German standard) Cold-worked bar/coil
Comparative Advantages and Limitations
● Advantages: The γ' phase (Ni₃(Al,Ti)) remains stable at temperatures 100–150℃ higher than Alloy 718, with superior creep resistance (750℃/150MPa fracture time > 1000 hours).
● Limitations: Welding requires matching special welding wire to avoid hot cracking; narrow hot working temperature window (strict temperature control required).
The company currently owns production equipment such as vacuum melting, electroslag remelting, forging and hot rolling (outsourced), solution treatment, machining, cold drawing, cold rolling (outsourced), and polishing. Our own laboratory can complete the testing of alloy chemical composition, mechanical properties, and flaw detection.
We can independently produce high-performance alloy materials such as nickel-based superalloys, cobalt-based superalloys, precision alloys, and special stainless steels. Products: forgings, billets, coils, bars, slabs/sheets, etc.
High-temperature alloy cobalt-based GH605/Co-50, etc. Iron-based GH1035/GH696, etc. Nickel-based GH901/GH3030/GH3044/GH4033/GH80A/GH90, etc. Corrosion-resistant alloys Inconel600/625/718/X-750/C276, etc. Expansion/precision alloys 4J29/32/33/36, etc.
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