Alloy Wire International
Datasheet: Nimonic® 75
Nimonic® 75
Nimonic® 75 is a Nickel-Chromium alloy with good corrosion and heat resistance, and contains Titanium and Carbon as additives. Initially used as turbine blades in the 1940s, Nimonic® 75 is readily fabricated and welded, and is now more regularly used in gas turbine engines, industrial furnaces and nuclear engineering.
Nimonic® 75 is also known as Nicrofer 7520.
Available in all profile options
Key Features
Nimonic® 75 offers the following key features:
Good corrosion resistance
Good heat resistance
**High temperature static applications
Typical Applications
Nimonic® 75 is known to be suitable for the following applications:
Designations
W.Nr 2.4951
W.Nr 2.4630
UNS N06075
AWS 032
Specifications
BS HR 5
BS HR 504
Chemical Composition
The chemical composition of Nimonic® 75 is indicated in the table below:
| Element | Min % | Max % |
|---|---|---|
| C | 0.08 | 0.15 |
| Si | – | 0.30 |
| Mn | – | 1.00 |
| S | – | 0.15 |
| Co | – | 5.00 |
| Cr | 19.0 | 21.00 |
| Cu | – | 0.50 |
| Fe | – | 5.00 |
| Pb | – | 0.005 |
| Ti | 0.2 | 0.50 |
| P | – | 0.015 |
| Al | – | 0.40 |
| Ni | bal |
Alloy Details
Nimonic® 75 density, melting point, coefficient of expansion, modulus of rigidity, and elasticity is indicated in the table below:
| Density | Melting Point | Coefficient of Expansion | Modulus of Rigidity | Modulus of Elasticity |
|---|---|---|---|---|
| 8.37 g/cm³ | 1380 °C | 11.0 μm/m °C (20 – 100 °C) | 75.6 kN/mm² | 206 kN/mm² |
| 0.302 lb/in³ | 2520 °F | 6.1 x 10-6 in/in °F (70 – 212 °F) | 10965 ksi | 29878 ksi |
Heat treatment of finished parts
The typical heat treatment of Nimonic® 75:
| Condition as supplied by AWI | Type | Temperature | Time | Cooling |
|---|---|---|---|---|
| Annealed or Spring Temper | Stress Relieve | 450 – 470 °C (840 – 880 °F) | 0.5 – 1 | Air |
Properties
The typical mechanical properties of Nimonic® 75:
| Annealed | ||
|---|---|---|
| Approx. tensile strength | <800 N/mm² | <116 ksi |
| Approx. operating temperature depending on load** and environment | -200 to +1000 °C | -330 to +1830 °F |
| Spring Temper | ||
|---|---|---|
| Approx. tensile strength | 1200 – 1500 N/mm² | 174 – 218 ksi |
| Approx. operating temperature depending on load** and environment | -200 to +1000 °C | -330 to +1830 °F |
The above tensile strength ranges are typical. If you require different please ask.
*Trade name of Special Metals Group of Companies ** High temperature static applications = still/fixed/motionless/rigid
