[Download](https://presentations-decks-uploads-prod.s3.amazonaws.com/7403838/3888537/12414a9d77c0e8922332cee99c8836e36d7746ccda751d87f542742c6a6e80bf.pdf?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Date=20260910T074626Z&X-Amz-SignedHeaders=host&X-Amz-Expires=60&X-Amz-Credential=AKIAZ32RUKUMSNCVYAKB%2F20260910%2Fus-east-1%2Fs3%2Faws4_request&X-Amz-Signature=d38ee3ee79ae440a58c93667816572b64134f9419059e2abe0f290894ab91842) This data sheet contains approximate values that may vary with build conditions and is intended for reference and comparison purposes only. It should not be used for design specifications or quality control. The performance characteristics of the material can be affected (±) by, but are not limited to, part design, part geometries, application and operating conditions. Each user is responsible for determining that the material is safe, lawful and technica lly suitable for the intended laws and regulations. A DDITIVA makes no warranties of any kind, express or implied, including, but not limited to, the warranties of merchantability, fitness for a particular use, or warranty against patent infringement. ADDITIVA excludes liability, however arising, for any inac curacies in this document. ADDITIVA\_INCONEL718\_rev006.docx INCONEL® alloy 718 is a high \- strength, corrosion \- resistant nickel \- chromium material. Similar to its sister alloy 625, Inconel 718 is an age \- hardened version of alloy 625. Ageing (or precipitation hardening) produces precipitates within the microstructure t hat pin the metal's grains in place. As a result, the material typically becomes significantly stronger. Service temperatures range from \- 196°C to 700°C (\- 321°F to 1.300°F). Its welding characteristics, especially its resistance to post \- weld cracking, are outstanding. Good tensile, fatigue, creep, and rupture strengths have led to its use in a wide range of applications. The alloy is utilised in jet engines, liquid \- fuelled rockets, rings, casings, and metal parts for aircraft and land \- based gas turbine engi nes, cryogenic tankage, and high \- temperature fasteners. INCONEL 718 is also employed in the oil and gas drilling and production industries due to its high strength and resistance to chlorides, stress corrosion, and sulphide stress cracking. Parts can be ma chined, welded, shot \- peened, polished, and coated. UNS AMS ASTM DIN N07718 5596 \- 5832 B670 – F3055 2.4668 Chemical composition Physical properties Ni – Nickel 50.0÷55.0% Relative density Approx. 99.9% Cr – Chromium 17.0÷21.0% Density 8.15 g/cm 3 Nb – Niobium 4.7÷5.5% Heat Treatment (AMS 5662) Mo – Molybdenum 2.8÷3.3% STEP 1 – Annealing Ti – Titanium 0.6÷1.2% 20°C → 980°C \- Al – Aluminium 0.2÷0.8% 980°C 1 hour Co – Cobalt ≤ 1.0% 980°C → 20°C \- Cu – Copper ≤ 0.3% STEP 2 – Ageing C – Carbon ≤ 0.08% 20°C → 720°C \- Mn – Manganese ≤ 0.35% 720°C 8 hours Si – Silicon ≤ 0.35% 720°C → 620°C 2 hours P – Phosphorus ≤ 0.015% 620°C 10 hours S – Sulfur ≤ 0.015% 620°C → 20°C \- Technical data Typical part accuracy (quote < 150 mm) ± 0.2/0.3 mm Typical part accuracy (quote ≥ 150 mm) ± 0.05mm each 25mm Surface roughness (as built) Ra: 5 ÷ 9 µm Surface roughness (after machining / polishing) Ra < 1.6 µm Mechanical properties Mechanical data Test method As Built Heat Treated AMS 5662 Tensile strenght ISO 6892 \- 1:2009(B) Annex D 1020 ± 15 MPa 1.400 ± 15 MPa Yield strenght (Rp 0.2%) ISO 6892 \- 1:2009(B) Annex D 630 ± 15 MPa 1.1 4 0 ± 15 MPa Elongation at break ISO 6892 \- 1:2009(B) Annex D 30 ± 5 % 10 ± 2% Young’s modulus 1 85 ± 1 0 GPa 210 ± 1 0 GPa Hardness DIN EN ISO 6508 \- 1 30 HRC 46 HRC Thermal properties Maximum long \- term operating temperature Approx. 700°C / 1.300 °F Thermal conductivity 6 ÷ 12 W/mK Pagina 1 di 1 ![](https://presentations-slides-prod.s3.amazonaws.com/7403838/3888537/2026/05/26/ac2e8eefcbbf8692e4c7f51584321ed5.thumb.jpg)