Inconel718 Flat Washer

Products description

What the Inconel 718 is :

INCONEL alloy 718 (UNS N07718/W.Nr. 2.4668) is a high-strength, corrosion-resistant nickel chromium material used at -423° to 1300°F. Typical composition limits are shown in Table 1. 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 INCONEL 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. Examples of these are components for liquid fueled rockets, rings, casings and various formed sheet metal parts for aircraft and land-based gas turbine engines, and cryogenic tankage. It is also used for fasteners and instrumentation parts.

Examples of applications :

• Petroleum production

• Saltwater handling

• Pulp mill bleach systems

• Tall oil distillation columns

• Desalination equipment

• Food and chemical processing equipment

• Flue gas desulphurization scrubbers

• Offshore oil & gas production equipment

Chemical Composition

Table 1 - Limiting Chemical Composition(a) , %
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.
(a) Conforms to AMS specifications
*Reference to the 'balance' of a composition does not guarantee this is exclusively of the element mentioned but that it predominates and others are present only in minimal quantities.

Physical Properties

The physical properties of stainless steel grade inconel718 are tabulated below.

Mechanical Properties

The following table shows mechanical properties of stainless steel grade Inconel718.

Products description