UNS N07090 (Nimonic 90)

Short Introduction:

  • Nimonic 90/GB GH90/UNS N07090/BS Nimonic90/W. Nr. 2.4632 is aging strengthen ni-based deformation high temperature ally, with a high amount of cobalt and many kinds of strengthening element, this alloy in 815 ~ 870 °C have high tensile strength and contravariance ability, good oxidation resistance and corrosion resistance, cold and heat alternately repeatedly in under the action of a higher fatigue strength and good formability and weldability. Used for turbine engine turbine dish, leaf, high temperature fasteners, card hoop, seals and elastic components etc.

    Category:

    Description

    UNS N07090 /Nimonic 90

    Material grades and equivalents

    Nimonic 90/GB GH90/ UNS N07090 / BS Nimonic90/ W. Nr. 2.4632

    Nimonic 90 characteristics and application fields of summary:

    • This alloy is aging strengthen ni-based deformation high temperature ally, with a high amount of cobalt and many kinds of strengthening element, this alloy in 815 ~ 870 °C have high tensile strength and contravariance ability, good oxidation resistance and corrosion resistance, cold and heat alternately repeatedly in under the action of a higher fatigue strength and good formability and weldability. Used for turbine engine turbine dish, leaf, high temperature fasteners, card hoop, seals and elastic components etc.

    Nimonic 90 chemical ingredients: (GB/T14992-2005):

     %

     Ni

     Cr

     Fe

     Zr

     B

     Co

     C

     Mn

     Si

     S

     Cu

     Al

     Ti

     Min

     Bal

     18.0

     15.0

     1.0

     2.0

     Max

     21.0

     1.5

     0.15

     0.02

     21.0

     0.13

     0.4

     0.8

     0.015

     0.2

     2.0

     3.0

     

    Nimonic 90 physical ability:

     density g/cm3

      M.point°C

     Heat transfer Rate λ/(W/m•°C)

    specific heat capacityJ/kg•°C

     modulus of elasticityGPa

     shear elasticityGPa

      RμΩ•m

     coefficient of linear expansiona/10-6°C-1

     8.2

     1400

    21.76(100°C)

     225

     12.7(20~100°C)

     

    Nimonic 90 force ablity:

     Heat treatment

     Tensile Strength σb/MPa

    Yield Strength σp0.2/MPa

     Elongationσ5 /%

     HB HBS

    Solutiontreatment

     820

     590

     8

    Nimonic90 process performance and requirements:

    • 1, the alloy in forging easily produce inside crack, allow hammer blow, don’t allow low temperature chamfering. Ingot outfit furnace temperature is not higher than 700 °C, 1150 °C ± final heating temperature 10 °C, open forging not below 1060 °C temperature, and forging temperature not less than 950 °C.

    • 2, the size of the average grain degrees of alloy forgings and deformation degree, eventually forging is closely related to the temperature.

    • 3, alloy in solid solution state can be inert gas protection electric arc welding and tungsten very flash butt weld.

    Specification:

       bar/wire

    BS HR2 Nimonic 90 bars, billet, forgings;BS HR501 Nimonic 90 cold drawn wire for springs;BS HR502 Nimonic 90 cold drawn and solution; treated wire for springs; BS HR503 Nimonic 90 wire for thread inserts;AMS 5829;AECMA PrEN 2295;AECMA PrEN 2296;AECMA PrEN 2297;AECMA PrEN 2400;AECMA PrEN 2401;AECMA PrEN 2669;AECMA PrEN 2670;MSRR 7016;MSRR 7137;Siemens DL 1641-1; ABB Stal 63 73 01

     sheet/plate/strip

    BS HR202 Nimonic 90 sheet and strip;MSRR 7087;AECMA PrEN 2298;SiemensTLV8525 2100;Siemens TLV8525 31001

    Tube

    BS HR 402;AECMA PrEN 2299