| In 903 Alloy High Lights |
| Common Fabrication Processes |
- Rocket-Engine Thrust Chambers
- Gage Blocks
- Ordnance Hardware
- Rings and Castings
|
| Material Group |
S - Superalloys (Heat resistant and Titanium) |
| Sub-Group |
Superalloy |
| Hardness |
41.0 HRC |
| Tensile Strength |
1250[N/mm^2] |
| Machinability Range |
11% |
| Category |
High alloy steel |
| Class |
High temperature corrosion Alloy steel |
| Common Names |
Chromium-Manganese-INCOLOY alloy 903 |
| Designations |
ASTM, UNS, AISI, DIN EN, DIN SEW, ISO, JIS, NF, BS, GB. |
|
Get UNS N19903 as per Standards Click Here
|
Table of Content
Incoloy 903 Supplier in India Suitable to Work At Temperature Above 540°C (1000°F)
Incoloy 903 Temprature Range
| Minimum Service Temperature |
-196°C (-320°F) |
| Maximum Service Temperature |
650°C (1200°F) |
| Optimum Operating Temperature Range |
400°C to 650°C (750°F to 1200°F) |
Equivalent International Designations for Material Incoloy 903
| Standard |
Name |
| UNS |
UNS N19903 |
| DIN |
NiFe42K15Nb |
| ANFOR |
Z3NK28 |
Super Alloy Incoloy 903 Advantages
- Excellent strength and toughness
- High resistance to thermal expansion
- Outstanding oxidation and corrosion resistance
- Good fatigue and creep resistance
- Maintains dimensional stability
- Excellent weldability and fabricability
Buy UNS N19903 Material in Various Form With Density 8.25 g/cm³ and Melting Point 1385°C
Physical Properties of Age-Hardened Incoloy Alloy 903
| Property |
Value |
| Density |
0.298 lb/in³ |
| 8.25 g/cm³ |
| Melting Range |
2405-2539 °F |
| 1318-1393 °C |
| Curie Temperature |
780-880 °F |
| 416-471 °C |
Cutting Speeds Recomendations for Incoloy Alloy 903
| Application |
Vc (SFM) |
Vc (m/min) |
| Turning |
110-160 |
35-50 |
| Milling |
100-130 |
30-40 |
| Parting |
80-100 |
25-30 |
| Grooving |
110-150 |
35-45 |
| Drilling |
110-150 |
35-45 |
Modulus of Elasticity of Nickel Incoloy 903
| Temperature (°C) |
Tensile Modulus (GPa) |
Poisson’s Ratio |
Torsional Modulus (GPa) |
| 0 | 146.8 |
- |
- |
| -196 |
148.9 |
- |
- |
| -50 |
146.9 |
- |
- |
| -100 |
147.4 |
- |
- |
| 50 |
146.9 |
0.239 |
59.3 |
| 100 | 147.2 |
0.247 |
59.0 |
| 150 | 147.8 |
0.242 |
59.5 |
| 200 | 149.3 |
0.226 |
60.9 |
| 250 | 150.2 |
0.227 |
61.2 |
| 300 | 151.3 |
0.236 |
61.4 |
| 350 | 152.4 |
0.241 |
61.4 |
| 400 | 153.5 |
0.273 |
62.3 |
| 450 | 153.9 |
0.307 |
62.2 |
| 500 | 151.8 |
0.318 |
57.6 |
| 550 | 149.8 |
0.318 |
55.4 |
| 600 | 149.8 |
0.352 |
55.4 |
Thermal Properties of Nickel Alloy 903
| Temperature |
Specific Heat |
Electrical Resistivity |
Thermal Conductivity |
| Btu/lb•°F |
ohm•circ mil/ft |
Btu•in/ft²•h•°F |
| °C |
| 50 |
442 J/kg•°C |
0.650 μΩ•m |
16.9 W/m•°C |
| 100 |
454 J/kg•°C |
0.735 μΩ•m |
17.9 W/m•°C |
| 200 |
482 J/kg•°C |
0.880 μΩ•m |
19.7 W/m•°C |
| 300 |
507 J/kg•°C |
1.020 μΩ•m |
19.3 W/m•°C |
| 400 |
532 J/kg•°C |
1.135 μΩ•m |
20.5 W/m•°C |
| 500 |
559 J/kg•°C |
1.195 μΩ•m |
20.3 W/m•°C |
| 600 |
584 J/kg•°C |
1.220 μΩ•m |
21.9 W/m•°C |
| °F |
| 100 | 0.105 | 379 | 117 |
| 200 | 0.108 | 433 | 119 |
| 400 | 0.115 | 532 | 124 |
| 600 | 0.122 | 626 | 128 |
| 800 | 0.129 | 692 | 134 |
| 1000 | 0.135 | 721 | 143 |
| 1200 | 0.143 | 734 | 158 |
Stockist Of Nickel Alloy 903 in Mumbai At Best Price For Rocket Engine and Gas Turbine
Incoloy 903 500-h Static Oxidation Resistance
| Test Temperature |
Depth of Attack |
Weight Gaina
(mg/cm²) |
| °F |
°C |
in |
cm |
| 1000 |
540 |
0.0015 |
0.0038 |
0.7 |
| 1100 |
595 |
0.0025 |
0.0064 |
2.2 |
| 1200 |
650 |
0.0040 |
0.0102 |
2.7 |
Refer High Strength Inconel 903 Chemical Composition and Mechanical Properties
Inconel 903 Chemical Composition
| Element |
Content (%) |
| Nickel, Ni |
38 |
| Cobalt, Co |
15 |
| Niobium, Nb |
3 |
| Iron, Fe |
42 |
| Titanium, Ti |
1.4 |
| Aluminum, Al |
0.9 |
Nickel Alloy 903 Mechanical Properties
| Properties |
Metric |
Imperial |
| Yield strength (@ strain 0.200 %, precipitation hardened) |
1100 MPa |
160000 psi |
| Tensile strength (precipitation hardened) |
1310 MPa |
190000 psi |
| Elastic modulus (@ 0°C/32°F) |
146.8 GPa |
21290 ksi |
| Elongation at break (precipitation hardened) |
14% |
14% |
| Poisson's ratio (@ 250°C/482°F) |
0.226 |
0.226 |
Super Alloy Incoloy 903 Cyclic Oxidation Resistance
Cyclica
Exposure Time, h |
Weight Gain, mg/cm² |
| 1000°F (540°C) |
1100°F (595°C) |
1200°F (650°C) |
| 200 |
0.38 |
0.7 |
1.9 |
| 100 |
0.32 |
0.6 |
1.1 |
| 400 |
0.43 |
1.0 |
3.0 |
| 300 |
0.40 |
0.9 |
2.4 |
| 500 |
0.48 |
1.1 |
3.6 |
Understand Difference Between Super Alloy 903 vs 909
| Property |
Incoloy 903 |
Incoloy 909 |
| Density |
8.12 g/cm³ |
8.14 g/cm³ |
| Melting Point |
1350-1380°C |
1360-1390°C |
| Coefficient of Thermal Expansion |
Low |
Very low |
| Tensile Strength (at 650°C) |
~950 MPa |
~980 MPa |
| Yield Strength (at 650°C) |
~720 MPa |
~740 MPa |
| Oxidation Resistance |
Excellent up to 650°C |
Excellent up to 650°C |
| Service Temperature Range |
-196°C to 650°C |
-200°C to 650°C |
Recommended Insert Cutting Edge Geometry for Material Incoloy 903
| Honing Size |
0.02-0.05 mm / 0.001-0.002" |
| Land Width |
0.10-0.20 mm / 0.004-0.008" |
| Ground Insert |
Recommended |
| Rake Angle |
13° -18° |
| Land Angle |
Neutral |
Dynamic Modulus of Inconel 903 Material
| Temperature |
Dynamic Modulus |
| °K |
°F |
kN/m² × 10⁶ |
psi |
| 297 |
75 |
159.3 |
23.1 |
| 477 |
400 |
158.6 |
23.0 |
| 589 |
600 |
160.6 |
23.3 |
| 700 |
800 |
162.0 |
23.5 |
| 811 |
1000 |
161.3 |
23.4 |
| 922 |
1200 |
156.5 |
22.7 |
| 1033 |
1400 |
148.9 |
21.6 |
Strain Parameters of Incoloy Alloy 903 in Gaseous Environments
| 1400°F Hydrogen |
SWX-1 (AW+OA) 1400°F Helium |
SWX-2 (AW+OA) 1400°F Hydrogen |
SWX-3 (AW+OA) 1400°F Hydrogen |
| Strain (in./in. × 10⁻³) |
Stress (ksi) |
Strain (in./in. × 10⁻³) |
Stress (ksi) |
Strain (in./in. × 10⁻³) |
Stress (ksi) |
Strain (in./in. × 10⁻³) |
Stress (ksi) |
| 1.33 | 34.6 | 1.51 | 37.5 | 1.84 | 36.8 | 1.80 | 36.8 |
| 2.18 | 48.1 | 2.30 | 51.9 | 2.80 | 53.1 | 1.85 | 53.1 |
| 2.80 | 54.6 | 2.89 | 59.0 | 3.31 | 59.0 | 3.39 | 59.0 |
| 3.56 | 59.7 | 3.18 | 62.5 | 4.06 | 64.0 | 4.14 | 64.0 |
| 4.15 | 62.3 | 4.23 | 66.2 | 5.27 | 66.4 | 5.36 | 66.4 |
| 4.69 | 64.0 | 4.77 | 66.4 | 6.66 | 68.4 | 6.54 | 68.4 |
| 6.18 | 65.1 | 6.86 | 69.1 | 8.91 | 70.9 | 9.54 | 70.9 |
| 8.91 | 66.8 | 8.91 | 70.1 | 9.46 | 71.4 | 9.54 | 71.4 |
| 10.96 | 66.8 | 10.88 | 69.8 | 12.13 | 72.4 | 13.56 | 72.4 |
| 13.05 | 65.2 | 12.85 | 68.3 | 13.47 | 72.0 | 15.54 | 72.0 |
| 15.10 | 64.2 | 14.77 | 67.3 | 14.71 | 72.0 | 17.45 | 72.0 |
| 17.11 | 62.7 | 16.74 | 66.4 | 17.11 | 71.2 | 18.96 | 71.2 |
| 21.09 | 59.3 | 20.50 | 66.2 | 21.05 | 68.8 | 23.34 | 68.8 |
| 23.10 | 57.4 | 22.43 | 66.2 | 23.22 | 68.7 | 23.34 | 68.7 |
| 25.15 | 55.4 | 24.35 | 66.8 | 26.05 | 67.6 | 27.23 | 67.6 |
| 27.11 | 53.2 | 26.32 | 64.8 | 29.12 | 66.0 | 29.21 | 66.0 |
| 29.16 | 50.7 | 28.16 | 64.5 | 31.09 | 65.2 | 31.21 | 65.2 |
| 31.17 | 47.3 | 30.00 | 63.5 | — | — | — | — |
