Inconel 718 Nickel Alloy Plate & Sheet Alloy 718 Cold Rolled Sheet 2B Surface With ASTM Standard

Inconel 718 (Nickel 718) Strip, Coil, Foil, Wire, AMS 5596, AMS 5597, ASTM B670,

APPLICATIONS OF ALLOY INCONEL 718

• Honeycombs
• bellows
• seal rings
• fasteners
• spacers

DESCRIPTION OF INCONEL 718 MATERIALS

lnconel® 718 is a nickel-chromium alloy being precipitation hardenable and having high creep-rupture strength at high temperatures to about 1300 °F (700 °C). The poor age-hardening response of alloy 718 permits annealing and welding without spontaneous hardening during heating and cooling. This alloy has excellent weldability compared to the nickel-base super alloys hardened by Aluminum and Titanium.

CHEMISTRY TYPICAL OF INCONEL 718 MATERIALS

Nickel + Cobalt: 50.00 -55.00
Chromium: 17.00-21.00
Molybdenum: 2.80 -3.30
Columbium + Tantalum: 4.75 -5.50
Titanium: 0.65 -1.15 Aluminum: 0.20 -0.80
Cobalt: 1.00 max Carbon: 0.80 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
Iron: Balance

PHYSICAL PROPERTIES OF INCONEL 718

Density: 0.296 lbs/in3, 8.19 g/cm3

Specific Heat: Btu/lb ° F (J/kg ° C):
At 70 ° F (21 ° C): 0.104 (435)

Mean Coefficient of Thermal Expansion: in/in!° (mm/m/° C) 70 - 212 ° F (20 - 100 ° C): 7.6 x 10-5 (13.0)

Modulus of Elasticity: KSI (MPa)
29.7 x 103 (204.9 x 103) in tension

Magnetic Permeability, H = 200 Oersteds:
Annealed: 1.013
Annealed and Aged: 1.011

Melting Range: 2300 - 2437 ° F (1260 - 1336 ° C)

FORMS

Coil

• Strip
• Foil
• Ribbon

Wire

• Profile
• Round
• Flat
• Square

MECHANICAL PROPERTIES OF ALLOY 718 AT ROOM TEMPERATURE

ANNEALED TYPICAL

Ultimate Tensile Strength: 120 KSI min (827 MPa min)
Yield Strength: (0.2% offset) 60 KSI min (414 MPa min)
Elongation: 30% min (gauges:> 0.040 inches)

TEMPERED

lnconel® 718 can be cold rolled to various tempers. Contact Ulbrich Technical Service for additional information.

HEAT TREAT CAPABILITIES

Two heat treatments are generally utilized for lnconel® 718: Solution anneal at 1700 - 1850 ° F followed by rapid cooling, usually in water, plus precipitation hardening at 1325 ° F for 8 hours, furnace cool to 1150 ° F, hold at 1150 ° F for a total aging time of 18 hours, followed by air cooling. Solution anneal at 1900 - 1950 ° F followed by rapid cooling, usually in water, plus precipitation hardening at 1400 ° F for 10 hours, furnace cool to 1200 ° F, hold at 1200 ° F for a total aging time of 20 hours, followed by air cooling.

* Contact Ulbrich Technical Service for additional information.

ADDITIONAL PROPERTIES

INCONEL 718 CORROSION RESISTANCE

Refer to NACE (National Associate of Corrosion Engineers) for recommendations.

FINISHES

#1 - Hot rolled annealed and descaled. It is available in strip, foil and ribbon. It is used for applications where a smooth decorative finish is not required.
#2D - Dull finish produced by cold rolling, annealing and descaling. Used for deep drawn parts and those parts that need to retain lubricants in the forming process. #2B - Smooth finish produced by cold rolling, annealing and descaling. A light cold rolling pass is added after anneal with polished rolls giving it a brighter finish than 2D. #BA- Bright annealed cold rolled and bright annealed
#CBA- Course bright annealed cold rolled matte finish and bright anneal
#2 - Cold Rolled #2BA- Smooth finish produced by cold rolling and bright annealing. A light pass using highly polished rolls produces a glossy finish. A 2BA finish may be used for lightly formed applications where a glossy finish is desired in the formed part. Polished - Various grit finish for specific polish finished requirements.
* Not all finishes are available in all alloys - Contact Ulbrich Sales for more information.

WIRE FINISHES

XC - Extra Clean Bright Annealed or Bright Annealed and Cold Rolled Grease - Ultra bright finish (for decorative applications) Soap - Soap coating on tempered wire to act as lubricant. * Contact Wire Sales for custom wire finishes.

HEAT TREATMENT

lnconel® 718 can be hardened by: Cold Working Age Hardening Cold Working followed by Age Hardening