Nickel Alloy 909 /Incoloy 909® (UNS N19909)
Technical Data Sheet
Chemical Composition Limits |
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Weight% |
N |
Co |
Nb |
Ti |
Fe |
Si |
Al |
C |
Alloy 909 |
35.0 - 40.0 |
12.0 - 16.0 |
4.3 - 5.2 |
1.3 - 1.8 |
Bal |
0.25 - 0.50 |
0.15 max |
0.06 max |
Alloy 909/ Incoloy 909® (UNS N19909) is a nickel-iron-cobalt alloy. Alloy 909 is a high strength alloy with impressive constant low coefficient of thermal expansion. Due to Alloy 909 characterisitics it has wide applications where low expansion together with high strength is required. Uses of Alloy 909 include gas turbines, rocket-engine thrust chambers, ordnance hardware, springs, steam-turbine bolts, gauge blocks, instrumentation, glass-sealing applications etc.
Typical Mechanical Properties
Material |
Temperature |
Yield Strength (0.2% Offset) |
Tensile Strength |
Elongation (%) |
Reduction Area % |
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Ksi |
MPa |
Ksi |
MPa |
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Alloy 909 |
70F |
20C |
150 |
1034 |
185 |
1276 |
15 |
30 |
Alloy 909 |
1200 |
650 |
125 |
862 |
150 |
1034 |
25 |
60 |
Typical Tensile Properties of Age-Hardened Alloy 909 |
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Super Alloy Incoloy 909(tm)
Specifications
- UNS N19909
Related Metals:
- Pyromet CTX-909(tm)
Chemistry Data : [top]
Aluminum |
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Boron |
0.012 max |
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Carbon |
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Chromium |
1 max |
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Cobalt |
12 - 16 |
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Copper |
0.5 max |
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Iron |
Balance |
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Manganese |
1 max |
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Nickel |
35 - 40 |
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Niobium |
4.3 - 5.2 |
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Phosphorus |
0.015 max |
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Silicon |
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Sulphur |
0.015 max |
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Titanium |
Principal Design Features |
This is a nickel-cobalt-iron alloy with high strength and a stable, or constant, coefficient of thermal expansion and constant modulus of elasticity. |
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Applications |
A typical application utilizes the constant coefficient of expansion characteristic of this alloy for uses such as gas turbine shrouds, high temperature bolting and gauge blocks. |
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Machinability |
Conventional machining techniques used for iron based alloys may be used. This alloy does work-harden during machining and has higher strength and "gumminess" not typical of steels. Heavy duty machining equipment and tooling should be used to minimize chatter or work-hardening of the alloy ahead of the cutting. Most any commercial coolant may be used in the machining operations. Water-base coolants are preferred for high speed operations such as turning, grinding, or milling. Heavy lubricants work best for drilling, tapping, broaching or boring. Turning: Carbide tools are recommended for turning with a continuous cut. High-speed steel tooling should be used for interrupted cuts and for smooth finishing to close tolerance. Tools should have a positive rake angle. Cutting speeds and feeds are in the following ranges: For High-Speed Steel Tools For Carbide Tooling Depth Surface Feed Depth Surface Feed of cut speed in inches of cut speed in inches inches feet/min. per rev. inches feet/min. per rev. 0.250" 25-35 0.030 0.250" 150-200 0.020 0.050" 50-60 0.010 0.050" 325-375 0.008 Drilling: Steady feed rates must be used to avoid work hardening due to dwelling of the drill on the metal. Rigid set-ups are essential with as short a stub drill as feasible. Heavy-duty, high-speed steel drills with a heavy web are recommended. Feeds vary from 0.0007 inch per rev. for holes of less than 1/16" diameter, 0.003 inch per rev. for 1/4" dia., to 0.010 inch per rev. for holes of 7/8"diameter. Milling: To obtain good accuracy and a smooth finish it is essential to have rigid machines and fixtures and sharp cutting tools. High-speed steel cutters such as M-2 or M-10 work best with cutting speeds of 30-40 feet per minute and feed of 0.004"-0.006" per cutting tooth. Grinding: The alloy should be wet ground and aluminum oxide wheels or belts are preferred. |
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Forming |
This alloy has good ductility and may be readily formed by all conventional methods. Because the alloy is stronger than regular steel it requires more powerful equipment to accomplish forming. Heavy-duty lubricants should be used during cold forming. It is essential to thoroughly clean the part of all traces of lubricant after forming as embrittlement of the alloy may occur at high temperatures if lubricant is left on. |
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Welding |
The commonly used welding methods work well with this alloy. Matching alloy filler metal should be used. If matching alloy is not available then the nearest alloy richer in the essential chemistry (Ni, Co, Cr, Mo) should be used. All weld beads should be slightly convex. It is not necessary to use preheating. Surfaces to be welded must be clean and free from oil, paint or crayon marking. The cleaned area should extend at least 2" beyond either side of a welded joint. Gas-Tungsten Arc Welding: DC straight polarity (electrode negative) is recommended. Keep as short an arc length as possible and use care to keep the hot end of filler metal always within the protective atmosphere. Shielded Metal-Arc Welding: Electrodes should be kept in dry storage and if moisture has been picked up the electrodes should be baked at 600 F for one hour to insure dryness. Current settings vary from 60 amps for thin material (0.062" thick) up to 140 amps for material of 1/2" and thicker. It is best to weave the electrode slightly as this alloy weld metal does not tend to spread. Cleaning of slag is done with a wire brush (hand or powered). Complete removal of all slag is very important before successive weld passes and also after final welding. Gas Metal-Arc Welding: Reverse-polarity DC should be used and best results are obtained with the welding gun at 90 degrees to the joint. For Short-Circuiting-Transfer GMAW a typical voltage is 20- 23 with a current of 110-130 amps and a wire feed of 250-275 inches per minute. For Spray-Transfer GMAW voltage of 26 to 33 and current in the range of 175-300 amps with wire feed rate of 200-350 inches per minute are typical. Submerged-Arc Welding: Matching filler metal, the same as for GMAW, should be used. DC current with either reverse or straight polarity may be used. Convex weld beads are preferred. |
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Heat Treatment |
Solution anneal at 1800 F and air cool. Then age-harden at 1325 F for 8 hours and furnace cool at 100 F per hour to 1150 F. Hold at 1150 F for 8 hours and air cool. |
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Forging |
Forging may be done in the range of 2050 F to 1940 F for initial working. Finish forging should be done at 1875 F to 1800 F. Air cool, do not water quench. |
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Hot Working |
Hot work in the range of 1900 F to 1800 F. Air cool, do not water quench. |
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Cold Working |
Cold forming may be done using standard tooling although plain carbon tool steels are not recommended for forming as they tend to produce galling. Soft die materials (bronze, zinc alloys, etc.) minimize galling and produce good finishes, but die life is somewhat short. For long production runs the alloy tool steels ( D-2, D-3) and high-speed steels (T-1, M-2, M-10) give good results especially if hard chromium plated to reduce galling. Tooling should be such as to allow for liberal clearances and radii. Heavy duty lubricants should be used to minimize galling in all forming operations. Bending of sheet or plate through 180 degrees is generally limited to a bend radius of 1 T for material up to 1/8" thick and 2 T for material thicker than 1/8". |
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Annealing |
Anneal at 1800 F and air cool. |
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Aging |
See "Heat Treat". |
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Hardening |
Hardens due to cold working and thermal aging - see "Heat Treat". |
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Other Mechanical Props |
Strength and Expansion at higher temperatures. At 1200 F Tensile strength: 150 ksi Yield strength: 125 ksi Elongation: 25% Reduction of area: 60% Coef. of Thermal Expansion at: 200 F 400 F 600 F 800 F 1000 F in./in./degree F x 10 -6 4.2 4.2 4.15 4.15 5.1 |
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Physical Data : [top]
Density (lb / cu. in.) |
0.296 |
Specific Gravity |
8.19 |
Specific Heat (Btu/lb/Deg F - [32-212 Deg F]) |
0.107 |
Electrical Resistivity (microhm-cm (at 68 Deg F)) |
438 |
Melting Point (Deg F) |
2590 |
Mean Coeff Thermal Expansion |
4.2 |
Modulus of Elasticity Tension |
23 |
Reduction of Area |
30 |
Provide all grade of these alloy by different shape & size is Our expertise
For any inquiry & request, don't hesitate to contact us
Availability: |
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INCOLOY 909 Plate |
INCOLOY 909 Fittings |
INCOLOY 909 Tube / Pipe |
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INCOLOY 909 Bar |
INCOLOY 909 Sheet |
INCOLOY 909 Coil /Strap |
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INCOLOY 909 Fasteners / Flanges |
INCOLOY 909 Powder |
INCOLOY 909 Welding Product |
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Specifications
UNS N19909
AMS 5884 Bars, Forgings, Rings
AMS 5892 Sheet, Strip
AMS 5893 Bars, Forgings, Rings
Incoloy 909 (trademark)
Disclaimer
Every effort is made to ensure that technical specifications are accurate. However, technical specifications included herein should be used as a guideline only. All specifications are subject to change without notice.
Provide all grade of these alloy by different shape & size is Our expertise
For any inquiry & request, don't hesitate to contact us