Brief Introduction of Nimonic 75
Nickel alloy 75 is a creep-resistant nickel-chromium-iron alloy with controlled carbon content and a small amount of titanium. The alloy is characterized by good mechanical properties at elevated temperatures up to 1000°C (1830°F), excellent oxidation resistance at temperatures up to 1100°C (2000°F), and good metallurgical stability.
Chemical Composition of Nimonic 75
| Element | Content (%) |
|---|---|
| Chromium, Cr | 18-21 |
| Iron, Fe | ≤ 5 |
| Manganese, Mn | ≤ 1 |
| Silicon, Si | ≤ 1 |
| Copper, Cu | ≤ 0.5 |
| Titanium, Ti | 0.2-0.6 |
| Carbon, C | 0.08-0.15 |
| Nickel, Ni | Balance |
Physical Properties of Nimonic 75
| Properties | Metric | Imperial |
|---|---|---|
| Density | 8.37 g/cm3 | 0.302 lb/in3 |
| Melting point | 1340-1380°C | 2440-2520°F |
Mechanical Properties of Nimonic 75
| Properties | Metric | Imperial |
|---|---|---|
| Tensile strength (Annealed) | 750 MPa | 109000 psi |
| Yield strength (Annealed) | 275 MPa | 39900 psi |
| Elongation at break (Annealed prior to test) | 42% | 42% |
Thermal Properties of Nimonic 75
| Properties | Metric | Imperial |
|---|---|---|
| Thermal expansion co-efficient (@20-100°C/68-212°F) | 11 µm/m°C | 6.11 µin/in°F |
| Thermal conductivity | 11.7 W/mK | 81.2 BTU.in/hrft².°F |
Fabrication and Heat Treatment of Nimonic 75
Machinability
Nimonic 75 alloy can be machined using conventional machining techniques used for iron-based alloys.
Forming
The alloy has good ductility, and can be readily formed using all conventional methods.
Welding
Nimonic 75 alloy can be welded using conventional welding techniques such as gas-tungsten arc welding, shielded metal-arc welding and submerged-arc welding.
Heat Treatment
The alloy can be annealed at (1925°F) and then air cooled.
Forging
The alloy can be hot forged at temperatures in the range of 982 to 1204°C (1800 to 2200°F).
Cold Working
Cold working of this alloy can be done using standard tooling.
Annealing
The alloy can be annealed at 1052°C (1925°F) and air cooled.
Hardening
The alloy can be hardened by cold working.
Applications of nimonic 75:
● Sheet-metal fabrications in gas-turbine engines
● Heat-treating equipment and fixtures
● Components of industrial furnaces
● Nuclear engineering
● Thermocouple sheathing
● High temperature fasteners, springs, dies and cores
Specifications for Nimonic 75
DIN 17752………………………….Rod, Bar, Wire and Forging Stock
DIN17750…………………………..Plate, Sheet and Strip
DIN 17751…………………………Pipe and Tube
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 |
Get the complete product catalog
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.
