N07718

N07718

Short Description:

Introduction Inconel 718 is a Nickel-Chromium alloy being precipitation hardenable and having high creep-rupture strength at high temperatures to about 700°C (1290°F). It has higher strength thanInconel X-750 and better mechanical properties at lower temperatures than Nimonic 90 andInconel X-750. Chemical Composition of Inconel 718 The compositional range for Inconel 718 is provided in the table below. Element Content Ni+Co 50 – 55 % Cr 17 – 21 % Fe BA...


  • FOB Price: US $0.5 - 9,999 / Piece
  • Min.Order Quantity: 100 Piece/Pieces
  • Supply Ability: 10000 Piece/Pieces per Month
  • Port: Shenzhen
  • Payment Terms: L/C,D/A,D/P,T/T
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    Introduction

    Inconel 718 is a Nickel-Chromium alloy being precipitation hardenable and having high creep-rupture strength at high temperatures to about 700°C (1290°F). It has higher strength thanInconel X-750 and better mechanical properties at lower temperatures than Nimonic 90 andInconel X-750.

    Chemical Composition of Inconel 718

    The compositional range for Inconel 718 is provided in the table below.

    Element

    Content

    Ni+Co

    50 – 55 %

    Cr

    17 – 21 %

    Fe

    BAL

    Nb+Ta

    4.75 – 5.5 %

    Mo

    2.8 – 3.3 %

    Ti

    0.65 – 1.15 %

    Al

    0.2 – 0.8 %

    Typical Properties of Inconel 718

    Typical properties of Inconel 718 are covered in the following table.

    Property

    Metric

    Imperial

    Density

    8.19 g/cm3

    0.296 lb/in3

    Melting point

    1336 °C

    2437 °F

    Co-Efficient of Expansion

    13.0 µm/m.°C
    (20-100 °C)

    7.2×10-6 in/in.°F
    (70-212 °F)

    Modulus of rigidity

    77.2 kN/mm2

    11197 ksi

    Modulus of elasticity

    204.9 kN/mm2

    29719 ksi

    Properties of Supplied Materials and Heat Treated Materials

    Condition of Supply

    Heat Treatment (After Forming)

    No.1 Spring Temper/Spring Temper

    1. Solution Anneal at 980°C (1800°F) for 1 hour and air cool and

    2. Age harden at 720°C (1330°F) for 8 hours and furnace cool to 620°C (1150°F) and hold at 620°C (1150°F) for a total age hardening time of 18 hours and air cool.

    No.1 Spring Temper/Spring Temper (NACE MRO175)

    1. 1010°C (1870°F) 2 hours and air cool and

    2. 790°C (1455°F) 6 hours and air cool.

    Condition

    Approx Tensile Strength

    Approx Service Temp.

    Annealed

    800 – 1000 N/mm2

    116 – 145 ksi

    -

    No.1 Spring Temper

    1000 – 1200 N/mm2

    145 – 175 ksi

    -

    No.1 Spring Temper + Annealed + Aged

    1250 – 1450 N/mm2

    181 – 210 ksi

    -200 to +550°C

    -330 to +1020°F

    Spring Temper

    1300 – 1500 N/mm2

    189 – 218 ksi

    -

    Spring Temper + Annealed + Aged

    1250 – 1450 N/mm2

    181 – 210 ksi

    -200 to +550°C

    -330 to +1020°F

    Relevant Standards

    Inconel 718 is covered by the following standards:

             AMS 5663

             AMS 5832

             AMS 5962

             AMS 5662

             ASTM B637

    Equivalent Materials

    Inconel 718 is the tradename of Special Metals Group of Companies and equivalent to:

             W.NR 2.4668

             UNS N07718

             AWS 013

    Applications of Inconel 718

    Inconel 718 typically finds application in:

             Gas turbines

             Rocket motors

             Space craft

             Nuclear reactors and pumps.

    Stock

    Form

    Specification

    Supply Form

    Others

    Sheet

    Thickness
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