Alloy 800HT/N08811

Alloy 800HT/N08811

Category：Anti-corrosion alloy» | Date：2023-03-17


  1. Brief introduction:

    Alloy 800H and alloy 800HT are Ni-Fe-Cr alloys that have the same basic composition as alloy 800 but with significantely higher creep-rupture strength,normally used above  approximately 1100℉（593℃）where resistance to creep and stress rupture is required.

    Alloy 800HT is used in chemical and petrochemical processing, power plants for super-heater and reheater tubing, industrial furnaces and heat-treating equipment.

     

  2. Main specifications:

    ChineseUNSWerkstoff Nr.
    NS112N088101.4958
    800HTN088111.4959

     

  3. Chemical composition under ASTM B408-2016 standard:

    Gradechemical composition,%
    NiCrFeMnCCuSiSAlTiAl+Ti
    alloy N0881030.0-35.019.0-23.0≥39.5≤1.50.05-0.1≤0.75≤1.0≤0.0150.15-0.60.15-0.6/
    alloy N0881130.0-35.019.0-23.0≥39.5≤1.50.06-0.1≤0.75≤1.0≤0.0150.15-0.60.15-0.60.85-1.2

     

  4. Fe element shall be determined arithmetically by difference.

    wire,rod,forging, bar,strip,sheet/plate,tube/pipe.

     

  5. Main produce standards:

    Wire,Rod, BarForgingPlate/Sheet/StripSeamless Tube/Pipe
    ASTM B408
    ASME SB408    		ASTM B564    ASME SB564ASTM B409 ASME
    SB409  AMS5871    		ASTM B163 ASME SB163 ASTM B407      ASME SB407

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