Applicable specifications: ASTM F3055

Associated specifications: UNS N07718, DIN 2.4668, AMS5662, AMS5664


Type analysis

Single figures are nominal except where noted.

Nickel 50.00–55.00 %
Niobium + Tantalum 4.75–5.50 %
Cobalt 1.00 %
Silicon 0.35 %
Nitrogen 0.03 %
Sulfur 0.015 %
Iron Balance
Molybdenum 2.80–3.30 %
Aluminum 0.20–0.80 %
Copper 0.30 %
Oxygen 0.03 %
Boron 0.006 %
Chromium 17.0–21.0 %
Titanium 0.65–1.15 %
Manganese 0.35 %
Carbon 0.08 %
Phosphorus 0.015 %


PowderRange® 718 is known as the “workhorse” nickel-base superalloy, and is a key material for high temperature applications in aerospace, energy, and industrial applications. It is an age-hardenable alloy designed to display exceptionally high yield, tensile, and creep-rupture properties at temperatures up to 1300°F (704°C). The sluggish age-hardening response of 718 permits annealing without spontaneous hardening during heating and cooling, as well as highly customizable heat treatments and subsequent mechanical properties for different applications.


PowderRange® 718 for additive manufacturing is highly processable due to good phase stability, minimal segregation, and low crack susceptibility. The latter two are due to Carpenter Additive’s tight control on residual elements. Although PowderRange® 718 is precipitation hardenable, it still displays excellent mechanical properties in the as-processed state.

Key Properties

  • Tensile strength, fatigue resistance, and creep resistance up to 1300°F (704°C).
  • Customizable properties through heat treatment
  • Resistance to chlorides, stress corrosion, and sulfide stress cracking



  • Jet engine and high-speed airframe parts
  • Instrumentation devices
  • Gas turbine components
  • Oil and gas tooling
  • Impellers for high temperature operation

Powder properties

Part Number PowderRange 718 F PowderRange 718 E
Application L-PBF1 EB-PBF or DED1
Maximum Particle Size Max 1 wt% > 53 µm2 Max 10 wt% > 106 µm2
Minimum Particle Size Max 10 vol% < 15 µm3 Max 10 wt% < 45 µm2
LSD Percentile D10, D50, D903, reported
Atomization Vacuum Induction Melted, Argon Gas Atomized
Apparent Density (G/CM3) Measured according to ASTM B2124 and reported
Hall Flow (S/50G) Measured according to ASTM B2135 and reported

1 ASTM/ISO 52900: Laser — Powder Bed Fusion (L-PBF), Electron-Beam Powder Bed Fusion (EB-PBF), Directed Energy Deposition (DED)
2 ASTM B214 Standard Test Method for Sieve Analysis for Metal Powders 
3 ASTM B822 Standard Test Method for Particle Size Distribution of Metal Powders and Related Compounds by Light Scattering 
4 ASTM B212 Standard Test Method for Apparent Density of Free-Flowing Metal Powders Using the Hall Flowmeter Funnel 
5 ASTM B213 Standard Test Method for Flow Rate of Metal Powders Using the Hall Flowmeter Funnel
Testing of powder will fulfill certification requirements to Nadcap Materials Testing and ISO/IEC 17025 Chemical, per relevant ASTM procedures

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Additive manufacturing process guidance


Laser-Powder Bed Fusion(L-PBF)

PowderRange 718 for additive manufacturing is compatible with all commercially available L-PBF equipment. To achieve mean, as-built density >99.9%, 20 to 60 µm layer thicknesses and Specific Energy ≥ 50 J/mm3 is recommended.

Solution Anneal andPrecipitation Heat Treatmentcondition(Sol/Pre)

Standard solution treatment and age hardening schedules can be used to obtain different combinations of tensile and stress rupture properties (e.g. AMS5662 and AMS5664). Example AMS5662 Solution and Age Cycle: Solution Anneal per AMS5662N section 3.4 by heating to approximately 1780°F (971°C) for approximately 1 hour followed by air cool. Precipitation heat treat per AMS5662N section at 1325°F (718°C ) for 8 hours followed by cooling at 100°F (56°C) per hour to 1150°F (621°C) and hold at least another 8 hours then air cool. Schedules better tailored to the AM process thermal history may be available. Please contact Carpenter Technology for information.

Hot IsostaticPressed condition(HIP/Sol/Pre)

We recommend HIP as standard practice for microstructure homogenization; removal of residual spatter-induced voids, trapped gas porosity in powder and keyhole porosities; as well as to heal any shrinkage-induced micro-cracks in the material. To achieve up to full density (100%): Process components per ASTM F3055 section 13: minimum pressure of 14.5 ksi (100 MPa) at a temperature of approximately 2087°F (1141°C) for 240 minutes in argon. Follow with Solution Anneal and Precipitation Heat Treatment as described above or other heat treatment as desired.


The alloy can be readily machined in either the annealed or the age-hardened condition. The age-hardened condition gives better chip action on chip breaker tools and produces a better finish. The annealed condition will give a slightly longer tool life. Because specific cutting forces are high, the machine tools used must have ample power and the cutting speed should be slow. The tools must have smooth finishes, be sharp, and be very rigid. To avoid work hardening, a continuous, smooth cutting action should be maintained; thus, the machines must have a minimum of backlash and the tool and workpiece must be rigidly supported. If possible, avoid very small cuts and feeds.







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Mean densities greater than 99.9%


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Up to 100% density

As-built, etched6

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Clean weld tracks visible Minimal spatter porosity

Sol/Pre, etched6

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Non-equiaxed / anisotropic grain size: ASTM 47 Delta phase present

HIP/Sol/Pre, etched6
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Equiaxed grain sizes ASTM 2-7 (average 5)7 No Delta phase present Delta phase present

6 Etched with Waterless Kalling’s Reagent
7 ASTM E112 Standard Test Method for Determining Average Grain Size

Typical achievable mechanical properties

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I8 Average of a minimum of 5 samples taken from across the extents of a build plate in each orientation and for each heat treatment. Testing performed in accordance with ASTM E8/E8M-16a (tensile), ASTM E23-18 (impact energy) and ASTM E18-19 (hardness). Additional data may be available through a wide range of consortia and other collaborations. Please contact Carpenter Additive for additional information. 9 ASTM F3055-14a Heat Treat Condition “D, F” Minimum Tensile Requirements

Corrosion resistance

IMPORTANT NOTE: The following 4-level rating scale (Excellent, Good, Moderate, Restricted) is intended for comparative purposes only and is derived from experiences with wrought product. Additive manufactured material may perform differently; corrosion testing is recommended. Factors that affect corrosion resistance include temperature, concentration, pH, impurities, aeration, velocity, crevices, deposits, metallurgical condition, stress, surface finish, and dissimilar metal contact.

Nitric Acid Good
Phosphoric Acid Moderate
Sodium Hydroxide Good
Sea Water Moderate
Humidity Excellent
Sulfuric Acid Moderate
Acetic Acid Good
Salt Spray (NaCl) Excellent
Sour Oil/Gas Good

Similar materials

Other Generic Names
3D Systems
GE (Concept Laser)
DMG Mori (Realizer)
SLM Solutions
Alternative Title
Alloy 718, 718, Nickel 718
LaserForm Ni718
Nickel 718
NickelAlloy IN718

For additional information, please

contact your nearest sales office:  | 610 208 2000

The mechanical and physical properties of any additively-manufactured

material are strongly dependent on the processing conditions used to

produce the final part. Significantly differing properties can be obtained by

utilizing different equipment, different process parameters, different build

rates and different geometries. The properties listed are intended as a

guide only and should not be used as design data.

The information and data presented herein are typical or average values

and are not a guarantee of maximum or minimum values. Applications

specifically suggested for material described herein are made solely for the

purpose of illustration to enable the reader to make his/her own evaluation

and are not intended as warranties, either express or implied, of fitness for

these or other purposes. There is no representation that the recipient of

this literature will receive updated editions as they become available.

Unless otherwise specified, registered trademarks are property of

CRS Holdings Inc., a subsidiary of Carpenter Technology Corporation.