About Alloy
HAYNES® 75 alloy (UNS N06075) is a solution-strengthened nickel-chromium alloy with moderate strength to 1200°F (650°C). It is principally used in low stress elevated temperature application requiring reasonable oxidation resistance, and is approximately equivalent to alloy 600 in performance. Alloy 75 is used in a number of fabricated part applications in the gas turbine and aerospace industries in Europe, and is also employed in general industrial heating uses. The alloy is readily formed and fabricated using conventional techniques.
Product Form
| Rod, Bar, Wire and Forging Stock | BS HR 5, BS HR 504, DIN 17752, AECMA PrEN2306, AECMA PrEN2307, AECMA PrEN2306, AECMA Pr EN2307, AECMA PrEN2402, ISO 9723, ISO 9724, ISO 9725, MSRR 7004 |
| Plate, Sheet, Strip | BS HR 203, DIN 17750, AECMA PrEN2293, AECMA PrEN2302, AECMA PrEN2411, ISO 6208, MSRR 7104 |
| Pipe and Tube | BS HR 403, DIN 17751, AECMA PrEN2294, ISO 6207 |
| Other | DIN 17742, AECMA PrEN2308, Werkstoff Nr 2.4630, W. Nr 2.4951, UNS N06075, Nimonic 75 (tradename), MSRR 7104 and MSRR 7004, AFNOR NC 20T |
Chemical Composition
| Weight% | Ni | Cr | Ti | C | Si | Cu | Fe | Mn |
| Alloy 75 | Bal | 18.9 - 21.0 | 0.2 / 0.6 | 0.08 / 0.15 | 1.0 max | 0.5 max | 5.0 max | 1.0 max |
Property
| Material | Test Temp °F | Ultimate Tensile Strength (ksi) | 0.2 % Yield Strength (ksi) | Elongation in 2" |
| Alloy 75 Sheet 1925°F Anneal | Room | 114.4 | 59.4 | 31 |
| Alloy 75 Sheet 1925°F Anneal | 1000 | 105.6 | 51.9 | 27 |
| Alloy 75 Sheet 1925°F Anneal | 1200 | 69.3 | 40.0 | 32 |
| Alloy 75 Sheet 1925°F Anneal | 1400 | 41.4 | 22.0 | 75 |
| Alloy 75 Sheet 1925°F Anneal | 1600 | 20.2 | 9.9 | 90 |
| Alloy 75 Sheet 1925°F Anneal | 1800 | 9.7 | 4.4 | 91 |
Application
Aerospace: Haynes 75 is utilized in aerospace components such as gas turbine engines, where it provides excellent strength and oxidation resistance at elevated temperatures.
Gas Turbines: It is commonly used in industrial gas turbines for power generation due to its ability to withstand high temperatures and harsh operating conditions.
Chemical Processing: Haynes 75 is employed in chemical processing equipment such as reactors, distillation columns, and heat exchangers where resistance to corrosion from acids, alkalis, and other chemicals is crucial.
Marine Environments: Components made from Haynes 75 are used in marine applications where resistance to saltwater corrosion and high-strength properties are required.
Oil and Gas Industry: It finds use in oil and gas exploration and production equipment, particularly in downhole tools and wellhead components exposed to corrosive environments and high temperatures.
Power Generation: In power plants, Haynes 75 is used in steam generators and other components where resistance to oxidation and high-temperature strength are essential.
Overall, Haynes 75 is valued for its combination of high strength, excellent corrosion resistance, and reliability in extreme conditions, making it suitable for a wide range of demanding industrial applications.
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