| Customization: | Available |
|---|---|
| Processing Object: | Metal |
| Molding Style: | Forging |
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Alloy 718 is a high-strength, corrosion-resistant nickel chromium material used at -423° to 1300°F. 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 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
Inconel 718 Chemical composition:
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
Aluminum ......................................................................................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.
Mechanical property
| Yield Strength (Mpa) |
Tensile Strength (Mpa) |
Elongation (%) |
Reduction (%) |
Hardness (HRC) |
Charpy Impact (J) |
||||||
| 1034 | 1270 | 12 | 15 | 331 |
Corrosion resistant
Alloy 718 has excellent corrosion resistance to many media. This resistance, which is similar to that of other nickel-chromium alloys, is a function of its composition. Nickel contributes to corrosion resistance in many inorganic and organic, other than strongly oxidizing, compounds throughout wide ranges of acidity and alkalinity. It also is useful in combating chloride-ion stress-corrosion cracking. Chromium imparts an ability to withstand attack by oxidizing media and sulfur compounds. Molybdenum is known to contribute to resistance to pitting in many media.
Applications of Alloy 718 (UNS N07718/W.Nr. 2.4668)
Components for liquid fueled rockets, rings, casings and various formed sheet metal parts for aircraft and land-basedgas turbine engines, and cryogenic tankage. It is also used for fasteners and instrumentation parts.Oil field applications
Available Products and Specifications at Huntec Alloys
Bar, Rod, Forgings - ASTM B 637, ASME SB 637, SAE AMS 5662, SAE AMS 5663, SAE AMS 5664, SAE AMS 5832, SAE AMS 5914, SAE AMS 5962, ASME Code Case 1993, ASME Code Case 2206, ASME Code Case 2222, AECMA PrEN 2404, AECMA PrEN 2405, AECMA PrEN 2952, AECMA PrEN 2961, AECMA PrEN 3219, AECMA PrEN 3666, ISO 9723, ISO 9724, ISO 9725, DIN 17752-17754
Plate, Sheet, Strip - ASTM B 670, ASTM B 906, ASME SB 670, ASME SB 906, SAE AMS 5596, SAE AMS 5597, SAE AMS 5950, AECMA PrEN 2407, AECMA PrEN 2408, ISO 6208, DIN 17750
Pipe and Tube - SAE AMS 5589, SAE AMS 5590, ASME Code Case N-253, DIN 17751
Other - ASME Code Case N-62, ASME Code Case N-208, DIN 17744
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