Alloy 901,Nimonic 901,UNS N09901,EFORU

### **Technical Datasheet: Alloy 901 (Nimonic 901, UNS N09901)** 

 **Overview

** Nimonic 901 (Alloy 901, UNS N09901) is a precipitation-hardenable nickel-iron-chromium superalloy specifically developed for high-temperature applications requiring exceptional strength and creep resistance. This age-hardenable alloy maintains excellent mechanical properties at temperatures up to 750°C (1380°F), making it particularly suitable for gas turbine components and high-temperature fasteners. 

### **Technical Datasheet: Alloy 901 (Nimonic 901, UNS N09901)** 

 **Overview

** Nimonic 901 (Alloy 901, UNS N09901) is a precipitation-hardenable nickel-iron-chromium superalloy specifically developed for high-temperature applications requiring exceptional strength and creep resistance. This age-hardenable alloy maintains excellent mechanical properties at temperatures up to 750°C (1380°F), making it particularly suitable for gas turbine components and high-temperature fasteners. 

 **Key Characteristics** - 

**Excellent high-temperature strength and creep resistance** - 

**Good oxidation resistance up to 750°C** - 

**Outstanding fatigue resistance** - 

**Good microstructural stability** - 

**Excellent mechanical properties retention** at elevated temperatures 

1. Chemical Composition (Weight %)

| Element | Composition (%) | 

|---------|-----------------| 

| **Nickel (Ni)** | 40.0-45.0 | 

| **Chromium (Cr)** | 11.0-14.0 | 

| **Iron (Fe)** | Balance | 

| **Molybdenum (Mo)** | 5.0-6.5 | 

| **Titanium (Ti)** | 2.8-3.1 | 

| **Cobalt (Co)** | ≤1.0 | 

| **Carbon (C)** | 0.05-0.10 |

 | **Aluminum (Al)** | ≤0.30 |

 | **Manganese (Mn)** | ≤0.50 | 

| **Silicon (Si)** | ≤0.50 | 

| **Copper (Cu)** | ≤0.50 | 

| **Boron (B)** | 0.01-0.02 | 

| **Sulfur (S)** | ≤0.015 | 

2. Physical Properties** 

| Property | Value | 

|----------|-------| 

| **Density** | 8.21 g/cm³ | 

| **Melting Range** | 1360-1410°C | 

| **Thermal Conductivity** | 14.0 W/m·K | 

| **Specific Heat** | 460 J/kg·K | 

| **Coefficient of Thermal Expansion** | 13.5 μm/m·°C | 

| **Modulus of Elasticity** | 210 GPa | 

3. Mechanical Properties** 

 **Room Temperature (Aged Condition):** - 

**Tensile Strength**: 1000-1200 MPa - 

**Yield Strength (0.2% Offset)**: 700-900 MPa - 

**Elongation**: 10-20% 

 **Elevated Temperature (650°C):** - 

**Tensile Strength**: ~850 MPa - 

**Yield Strength**: ~650 MPa - 

**Excellent creep rupture strength** (1000 hours at 650°C) 

4. International Standards** 

 | Product Form | Standard |

 |--------------|----------| 

| **Bar & Forgings** | AMS 5660, ASTM B637 | 

| **Plate, Sheet, Strip** | AMS 5661 | 

| **Wire** | AMS 5832 | 

| **Billet** | AMS 5762 | 

| **European Standard** | EN 10095 | 

| **Unified Numbering** | UNS N09901 | 

5. Applications** 

 **Aerospace Industry:** 

- Gas turbine discs and blades 

- Turbine shafts and rotors 

- Compressor components 

- Jet engine parts 

 **Power Generation:** 

- Gas turbine components 

- Turbine blades and discs 

- High-temperature bolts and fasteners 

- Steam turbine parts 

 **Industrial Gas Turbines:** 

- Turbine wheels and discs 

- Compressor sections 

- High-temperature fasteners 

- Shafts and rotating components 

 **Automotive Industry:** 

- Turbocharger components 

- High-performance engine valves 

- Racing engine components 

 **Other Applications:** 

- High-temperature bolts and studs 

- Nuclear reactor components 

- Heat treatment fixtures 

- High-temperature springs

 --- **Summary** 

Nimonic 901 (UNS N09901) is a high-performance nickel-iron-based superalloy that offers an exceptional combination of high-temperature strength, creep resistance, and microstructural stability. Its precipitation-hardening characteristics, achieved through careful control of titanium and molybdenum content, make it particularly valuable for rotating components in gas turbine engines and other high-temperature applications. The alloy's ability to maintain mechanical properties at temperatures up to 750°C, combined with good fatigue resistance and oxidation resistance, has established it as a reliable material choice for critical aerospace, power generation, and industrial applications. Comprehensive international standardization ensures consistent quality and performance across all product forms.

Packing of  Nimonic 901 (UNS N09901

 Standard Packing: 

Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Solutions are packaged in polypropylene, plastic or glass jars up to palletized 1647 gallon liquid totes Special package is available on request.