Nimonic 75 Introduction
Nimonic 75 / Alloy 75 is a Nickel-Chromium Alloy with excellent performance characteristics. Nimonic 75 has good mechanical properties, low creep, and high temperature oxidation resistance. Titanium is one of the most important factors in increasing the overall strength of the alloy.
Nimonic 80A Introduction
Nimonic 80a is a nickel chromium alloy that hardens with age. This alloy is created through precipitation hardening with titanium and aluminium additions. Alloy 80a has excellent corrosion resistance as well as high tensile and creep rupture properties. It is also resistant to oxidation.
Differences in Chemical Composition of Nimonic 75 and Nimonic 80 A
Nimonic 75
| Elements | Min | Max |
| Carbon | 0.080 | 0.150 |
| Chromium | 18.000 | 21.000 |
| Silicon | --– | 1.000 |
| Copper | --– | 0.500 |
| Iron | --– | 5.000 |
| Manganese | --– | 1.000 |
| Titanium | 0.200 | 0.600 |
| Nickel | remainder | remainder |
Nimonic 80 A
| Elements | Min | Max |
| Carbon | 0.080 | 0.150 |
| Chromium | 18.000 | 21.000 |
| Silicon | --– | 1.000 |
| Copper | --– | 0.200 |
| Iron | --– | 3.000 |
| Manganese | --– | 1.000 |
| Titanium | 1.800 | 2.700 |
| Aluminium | 1.000 | 1.800 |
| Cobalt | --– | 2.000 |
| Boron | --– | 0.008 |
| Zirconium | --– | 0.150 |
| Lead | --– | 0.0025 |
| Sulphur | --– | 0.015 |
| Nickel | --– | remainder |
Heat Treatment of 75
To achieve the desired results, these high strength alloys can be heat treated and cooled in air. Nimonic 75 can also be strain hardened if high tensile strength is required. Annealing at 1050°C (1920°F) should be followed by air cooling.
Heat Treatment of 80A
To achieve the desired results, these high strength alloys can be heat treated and cooled in air. Annealing at 1040°C (1904°F) should be followed by water quenching or air cooling for Nimonic 80a.
Working Instructions of Nimonic 75 and Nimonic 80A
Hot Working of Nimonic 75 : Nimonic 75 can be hot worked at temperatures ranging from 1220°C. to 950°C.
Hot Working of Nimonic 80A : Nimonic 80a can be hot worked at temperatures ranging from 1050 to 1200°C (1920 to 2190°F).
Forging of Nimonic 75 : Nimonic alloys can be forged at their respective allowable hot working temperatures, then heat treated to produce forgings, forged fittings, flanges, rings, discs, blocks, and so on.
Forging of Nimonic 80A : Nimonic alloys can be forged at their respective allowable hot working temperatures, then heat treated to produce forgings, forged fittings, flanges, rings, discs, blocks, and so on.
Cold working of Nimonic 75 : Nimonic alloys can be cold worked before being properly annealed. When subjected to a rapid strain hardening process, Nimonic 75 allows for greater reduction ratios without rupture.
Cold working of Nimonic 80A : Standard tooling can be used to cold work nimonic alloys, while alloy tool steels and high-speed steels produce good results.
Welding of Nimonic 75 : Before welding, the material should be annealed, though a small amount of cold work is acceptable. Nimonic alloys can be welded using MMA, TIG, and MIG welding techniques.
Welding of Nimonic 80A : NIMONIC alloy 80A sheet can be joined using any of the resistance welding processes; however, welding should be done on solution-treated material. Nimonic alloys can be welded using MMA, TIG, and MIG welding techniques.
Manufactured Product Forms of Nimonic 75
Round Bars Plate, Sheet, Strip Pipes & Tubes, Forgings, Wire Rods, Fittings, Fasteners, Filler Metal, Component Parts, Flanges
Manufactured Product Forms of Nimonic 80 A
Round Bars, Plate, Sheet, Strip, Pipes & Tubes, Forgings, Wire Rods, Fittings, Fasteners, Filler, Metal, Component Parts, Flanges
Relevant Specifiactions of Nimonic 75 A
BS HR 5, BS HR 504, BS HR 203, BS HR 403, DIN 17752, DIN 17750, DIN 17742, DIN 17751
Relevant Specifiactions of Nimonic 80 A
BS 3076 & HR 1, BS HR 201, BS HR 401, ASTM B 637, BS HR 601, DIN 17742
Applications & Industries of Nimonic 75
Aerospace Industry, High Temperature Springs, Thermal Processing Equipments, Industrial furnace structural parts, Heat treatment equipments.
Applications & Industries of Nimonic 80A
Aerospace Industry, High Temperature Springs, Thermal Processing Equipments, Industrial furnace structural parts, Heat treatment equipments.
Our product range
| Product Form | Standard Specifications | Typical Sizes / Dimensions | Common Standards (Examples) |
|---|---|---|---|
| Sheet & Plate | Thickness: 0.5mm – 50mm Width: 1000mm – 2000mm Length: 2000mm – 6000mm |
• Coils / Strips • Cut-to-Length Sheets • Heavy Plates |
ASTM B168, B906 ASME SB168 EN 10095, DIN 17752 |
| Bar & Rod | Diameter: 6mm – 300mm Length: 3000mm – 6000mm (straight) |
• Round Bars • Hexagonal Bars • Square Bars • Forging Billets |
ASTM B166 (rod/bar) ASTM B564 (forgings) |
| Pipe & Tube | Seamless Pipe: OD 6mm – 300mm, SCH 5S to XXS Welded Tube: OD 10mm – 500mm, Wall as required Heat Exchanger Tube: OD 12.7mm – 50mm |
• Hydraulic & Instrumentation Tubing • Boiler & Heat Exchanger Tubes • Mechanical Tubing |
ASTM B167, B163, B517/B75 ASTM B622 (seamless) ASTM B619/B626 (welded) |
| Fittings & Flanges | Class: 150 LBS to 2500 LBS Schedules: Matching pipe specifications |
• Elbows (90°/45°) • Tees, Reducers, Caps • Socket Weld & Butt-Weld Fittings • Slip-On & Weld Neck Flanges |
ASTM SB366 ASME B16.9 / B16.5 MSS-SP-43 / SP-75 |
| Wire & Electrodes | Diameter: 0.5mm – 5.0mm (Wire) Standard Sizes (Covered Electrodes) |
• Welding Wire (spool, coil) • Filler Metal Rods • SMAW Electrodes |
AWS A5.14 / A5.11 EN ISO 18274 / 14172 |
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Our factory
Our factory is equipped with state-of-the-art production facilities. The facility features advanced melting and thermo-mechanical processing lines, including Vacuum Induction Melting (VIM) furnaces and precision rolling mills, which transform raw materials into high-performance alloy products in forms such as plates, sheets, tubes, and bars. To ensure that every product meets the most stringent international standards and customer drawing requirements, we operate an in-house laboratory with comprehensive testing capabilities. Testing includes spectrometric chemical analysis, mechanical property testing, and non-destructive testing (NDT) methods such as ultrasonic and penetrant inspection. Governed by a certified quality management system, our integrated production process-from raw materials to finished products-ensures full traceability and consistent quality assurance.
