Forged Blocks

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Super alloys have good creep and oxidation resistance, and can be formed in different shapes. They contain a number of elements in a variety of combinations to achieve the desired result, and can function at very high temperatures and mechanical stress. They are classified into three groups such as nickel-based, iron-based and cobalt-based alloys.

Nimonic 90™ is a nickel-chromium-cobalt alloy which can be strengthened by adding aluminum and titanium.

The following table shows the chemical composition of Nimonic 90™.

The physical properties of Nimonic 90™ are outlined in the following table.

Additional Information:

• Item Code: Nimonic_90_UNSN07090_AMS5829_DIN24632_ForgedBlock

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The age-hardenable alloy can be readily fabricated, even into complex parts. Its welding characteristics, especially its resistance to postweld cracking, are outstanding.

The ease and economy with which INCONEL Alloy 718 can be fabricated, combined with good tensile, fatigue, creep, and rupture strength, have resulted in its use in a wide range of applications. Examples of these are components for liquid fuelled rockets, rings, casings and various formed sheet metal parts for aircraft and land-based gas turbine engines, and cryogenic tankage. It is also used for fasteners and instrumentation parts.

Some physical constants of INCONEL alloy 718 are shown in Table 2. Modulus data appear in Tables 3 and 4, and thermal properties in Table 5. The values in these tables will vary slightly, depending on the composition and condition of the specimen tested. They are typical but are not suitable for specification purposes.

• Nickel (plus Cobalt) ……………………………. 50.00-55.00
• Chromium ……………………………. 17.00-21.00
• Iron …………………………………. Balance*
• Niobium (plus Tantalum) ……………………. 4.75-5.50
• Molybdenum ………………………… 2.80-3.30
• Titanium ……………………………………….. 0.65-1.15
• Aluminium ………………………………………………………………..0.20-0.80
• Cobalt …………………………………………………………………….1.00 max.
• Carbon……………………………………………………………………0.08 max.
• Manganese ……………………………………………………………..0.35 max.
• Silicon …………………………………………………………………….0.35 max.
• Phosphorus……………………………………………………………0.015 max.
• Sulfur…………………………………………………………………….0.015 max.
• Boron ……………………………………………………………………0.006 max.
• Copper……………………………………………………………………0.30 max

Product Details:

INCONEL alloy X-750 (UNS N07750/W. Nr. 2.4669) is a precipitation-hardenable nickel-chromium alloy used for its corrosion and oxidation resistance and high strength at temperatures to 1300°F. Although much of the effect of precipitation hardening is lost with increasing temperature over 1300°F, heat-treated material has useful strength up to 1800°F. Alloy X-750 also has excellent properties down to cryogenic temperatures.

The economics of INCONEL alloy X-750 coupled with its availability in all standard mill forms has resulted in applications in a wide variety of industrial fields. In gas turbines, it is used for rotor blades and wheels, bolts, and other structural members. INCONEL alloy X-750 is used extensively in rocket-engine thrust chambers. Airframe applications include thrust reversers and hot-air ducting systems. Large pressure vessels are formed from INCONEL alloy X-750. Other applications are heat-treating fixtures, forming tools, extrusion dies, and test machine grips. For springs and fasteners, INCONEL alloy X-750 is used from sub-zero to 1200°F.

Depending on the application and the properties desired, various heat treatments are employed. For service above 1100°F, particularly where loads are to be sustained for long times, optimum properties are achieved by solution treating (2100°F) plus stabilisation treating (1550°F) plus precipitation treating (1300°F). For service below 1100°F, the alloy may be strengthened by precipitation treating after hot or cold working or by precipitation treating after equalising or solution treating. A furnace-cooling treatment is also used to develop optimum properties for some applications.

The various heat treatments and the properties developed are described under the section on Mechanical Properties.

• Nickel (plus Cobalt)…………………………………………….70.00 min.
• Chromium………………………………………………………….14.0-17.0
• Iron……………………………………………………………………….5.0-9.0
• Titanium……………………………………………………………..2.25-2.75
• Aluminum…………………………………………………………..0.40-1.00
• Niobium (plus Tantalum)……………………………………….0.70-1.20
• Manganese………………………………………………………..1.00 max.
• Silicon……………………………………………………………….0.50 max.
• Sulfur…………………………………………………………………0.01 max.
• Copper…………0.50 max.
• Carbon………...0.08 max.
• Cobalt1 ……….1.00 max

Product Details:

• Designing type: Forged
• Size: Customized

• Easy to use
• Optimum strength
• Excellent finish

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The limiting chemical composition of INCONEL alloy 617. The high nickel and chromium contents make the alloy resistant to a variety of both reducing and oxidizing media. The aluminum, in conjunction with the chromium, provides oxidation resistance at high temperatures. Solid-solution strengthening is imparted by the cobalt and molybdenum.

The combination of high strength and oxidation resistance at temperatures over 1800°F (980°C) makes INCONEL alloy 617 an attractive material for such components as ducting, combustion cans, and transition liners in both aircraft and land-based gas turbines. Because of its resistance to high-temperature corrosion, the alloy is used for catalyst-grid supports in the production of nitric acid, for heat-treating baskets, and for reduction boats in the refining of molybdenum. INCONEL alloy 617 also offers attractive properties for components of power-generating plants, both fossilfueled and nuclear.

Limiting Chemical Composition, %, of INCONEL alloy 617

• Nickel…………………………………………………………………44.5 min.
• Chromium…………………………………………………………..20.0-24.0
• Cobalt………………………………………………………………..10.0-15.0
• Molybdenum ………………………………………………………..8.0-10.0
• Aluminum………………………………………………………………0.8-1.5
• Carbon ………………………………………………………………0.05-0.15
• Iron……………………………………………………………………..3.0 max.
• Manganese ………………………………………………………….1.0max.
• Silicon …………………………………………………………………1.0 max.
• Sulfur ………………………………………………………………0.015 max.
• Titanium………………………………………………………………0.6max.
• Copper………………………………………………………………..0.5 max.
• Boron ………………………………………………………………0.006 max.