Nickel AlloysAMS 5663 (Alloy 718) Bar

A precipitation-hardenable nickel chromium grade with extremely high strength.

AMS 5663 is a designation of alloy 718, itself a nickel-chromium alloy with high strength, corrosion and oxidation resistance, and excellent tensile and impact strength at cryogenic temperatures.

AMS 5663 is bar that is already aged (precipitation hardened). As supplied, this material provides high tensile strength and hardness compared to 718 in the annealed condition. Machining aged 718 is generally more difficult than machining annealed material.

The benefit is that once machining is completed the part is complete. Avoiding post machining heat treatment has several benefits since it eliminates the issue of dimensional change during aging. It also provides significant logistical advantages.

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Properties

Chemical Composition

Chemical Element	% Present
Nickel (Ni)	50.00 - 55.00
Chromium (Cr)	17.00 - 21.00
Molybdenum (Mo)	2.80 - 3.30
Niobium (Columbium) (Nb)	4.75 - 5.50
Copper (Cu)	0.00 - 0.30
Aluminium (Al)	0.20 - 0.80
Carbon (C)	0.00 - 0.08
Cobalt (Co)	0.00 - 1.00
Manganese (Mn)	0.00 - 0.35
Nickel + Cobalt (Ni+Co)	50.00 - 55.00
Phosphorous (P)	0.00 - 0.15
Silicon (Si)	0.00 - 0.35
Sulphur (S)	0.00 - 0.15
Titanium (Ti)	0.65 - 1.15
Boron (B)	0.00 - 0.06
Columbium + Tantalum (Cb+Ta)	4.75 - 5.50
Iron (Fe)	Balance

Mechanical Property	Value
Proof Stress	70 MPa
Tensile Strength	135 MPa
Elongation A50 mm	45 %
Hardness Rockwell B	100 HRB

Characteristics

Aged to final heat treat condition
Good mechanical properties: tensile, fatigue and creep-rupture
Weldable
Oxidation resistant throughout its useful temperature range
Durability and high strength in extreme temperature conditions

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Disclaimer

This Data is indicative only and as such is not to be relied upon in place of the full specification. In particular, mechanical property requirements vary widely with temper, product and product dimensions. All information is based on our present knowledge and is given in good faith. No liability will be accepted by the Company in respect of any action taken by any third party in reliance thereon. Please note that the 'Datasheet Update' date shown above is no guarantee of accuracy or whether the datasheet is up to date.

The information provided in this datasheet has been drawn from various recognised sources, including EN Standards, recognised industry references (printed S online) and manufacturers' data. No guarantee is given that the information is from the latest issue of those sources or about the accuracy of those sources. Material supplied by the Company may vary significantly from this data but will conform to all relevant and applicable standards. As the products detailed may be used for a wide variety of purposes and as the Company has no control over their use; the Company specifically excludes all conditions or warranties expressed or implied by statute or otherwise as to dimensions, properties and/or fitness for any particular purpose, whether expressed or implied. Advice given by the Company to any third party is given for that party's assistance only and without liability on the part of the Company. All transactions are subject to the Company's current Conditions of Sale. The extent of the Company's liabilities to any customer is clearly set out in those Conditions; a copy of which is available on request.

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Properties

Typical

Characteristics

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