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718-NACE Round Bar - MRO175


Alloy 718-NACE round bar is a precipitation-hardening nickel-chromium alloy containing significant amounts of iron, columbium, and molybdenum, along with lesser amounts of aluminum and titanium. In general this grade offers a combination of high strength; resistance to high temperatures and good corrosion resistance.

Standard Inventory Specifications

  • API 6A718
  • API 6A
  • MRO175/ISO 15156
  • UNS N07718 
  • API 6A 19th Ed.
  • BMS N201 P
  • 40 HRC Max Hardness

Common Trade Names

  • NACE Nickel 718, Alloy 718 NACE, Inconel® 718 NACE

Industry Applications

  • Oil & Gas

Properties

  • Alloy 718 NACE round bar is specially processed to offer a combination of high strength and resistance to sulfide stress corrosion cracking. Surface hardness is closely controlled as are mechanical properties.

Inventory Size Range

  • Bar : 0.500" - 12.000"

Please contact us for more details.

The technical data provided is for information only and not for design purposes. It is not warranted or guaranteed.

* INCONEL and INCOLOY are trademarks of the Special Metals Corporation group of companies. 

Chemical Composition of 718 Nace

Element

Percent by Weight

Nickel (plus cobalt)

50.0/55.0%

Aluminum

0.20/0.80%

Silicon

0.35% max

Chromium

17.0/21.0%

Cobalt

1.00% max

Phosphorus

0.015% max

Cb + Ta

4.75/5.50%

Boron

0.006% max

Sulfur

0.15% max

Molybdenum

2.80/3.30%

Carbon

0.08% max

Copper

0.30% max

Titanium

0.65/1.15%

Manganese

0.35% max

Mechanical Properties of 718 NACE

Alloy 718 NACE round bar is stocked in the solution annealed and aged condition.

 

 

Tensile Strength    

150 ksi minimum

Yield Strength        

120 ksi minimum

Elongation (4D)

12% minimum

Hardness  

40 HRC maximum

Elongation

20% minimum

 

Machinability Rating: 12% of B-1112 Carbide tooling preferred for turning operations, but high speed steel preferred for milling (to avoid tooth chipping). Use relatively heavy cuts and low speeds to minimize surface work hardening.


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