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          • 800-HPALLOY
          • 1985 E 500 N Windfall, IN 46076
            444 Wilson St Tipton, IN 46072
            Post Office Box 40 Tipton, IN 46072
            tel:8004725569

          Incoloy 800 H / HT (UNS N08811) Fe base, Ni 32, Cr 21, Mn 1.5 Description

          Request a quote

          Ni 32.5 Cr 21 Mn 1.5 C 0.10 Si 1.0 Fe 39.5 Cu 0.75 S 0.015 Al 0.60 max. Ti 0.60 max

           

          High Performance Alloys stocks and produces Incoloy 800 H in this grade in the following forms: Bar, sheet/plate, fasteners. Request quote on this grade.

           

          1. Download FDA statement concerning the use of stainless steels as food contact surfaces of equipment. 154 KB PDF

           

          Overview

          UNS N08810 / UNS N08811
          Incoloy 8Incoloy 800 H is an iron-nickel-chromium alloy having the same basic composition as Incoloy 800, with significantly higher creep rupture strength. The higher strength results from close control of carbon, aluminum and titanium contents in conjunction with a high temp anneal. The 800H modification was to control carbon (0.05 to 0.10%) and grain size to (>ASTM 5) to optimize stress rupture properties. Incoloy 800 H has further modifications to the combined titanium and aluminum levels (0.85 to 1.2%) to ensure optimum high temperature properties. The alloy is dual certified and combines the properties of both forms.

          The chemical balance allows the alloy to exhibit excellent resistance to carburization, oxidation and nitriding atmospheres. 800HT will not become embrittled even after long periods of usage in the 1200-1600 deg F range where many stainless steels become brittle. Excellent cold forming characteristics typically associated with the nickel-chromium alloys are exhibited with 800HT. When cold formed extensively the grain size produces a visibly undulated surface called "orange peel". 800HT can be welded by the common techniques used on stainless steels.

          Typical applications for the alloy include ethylene pyrolysis, hydrocarbon cracking, cracking furnaces for vinyl chloride, diphenol and acetic acid. The alloy is also used for valves, fittings and other components exposed to corrosive attack from 1100 to 1800 deg F.

          Round bar ranging from 3/4" to 6" diameter, and light gauge sheet and plate. Incoloy 800 H material can be supplied in random lengths, cut to order or machined to customer requirements. Machining includes drilling, threading, milling, CNC shapes, turning, tapping, flanges and others.

          Chemistry

          Chemical Requirements

          Ni

          Cr

          Mn

          C

          Si

          Fe

          C

          Max

          35.0

          23.0

          1.5

          0.10

          1.0

          0.75

          Min

          30.0

          19.0

          39.5


          Tensile Data

          Mechanical Property Requirements

          Ultimate Tensile, min.

          Yield Strength (0.2% OS)

          Elong. in 2 in. or 50mm (or 4D) min., %

          R/A

          Hardness

          Min

          80 KSi

          35 KSi

          25

          Max

          Min

          550 MPa

          240 MPa

          Max

           


          Specifications

          Form

          Standard

          Metal Type

          UNS N08800 / N08810 / N08811

          Bar

          ASTM B408

          Wire

          Sheet

          ASTM B409

          Plate

          ASTM B409

          Fitting

          ASTM B366

          Forging

          ASTM B564

          Weld Wire

           

          Weld Electrode

           


          Machining

          MACHINING DATA
          Carbide tools are suggested
          for rates better than 50% of Type 304.
          Machining Type Suggested starting rates are:
          Single Point turning : Roughing - 0.15" depth, 0.015"/rev feed -175 SFM
          Finishing - 0.025" depth, 0.007"/rev feed - 200 SFM
          Drilling : 1/4" Dia hole - 0.004"/rev feed - 60 SFM
          1/2" Dia hole - 0.007"/rev feed - 60 SFM
          3/4" Dia hole - 0.010"/rev feed - 60 SFM
          Reaming : Feed - same as drilling - 100 SFM
          Side and Slot Milling : Roughing - 0.25" depth - 0.007"/tooth feed - 125SFM
          Finishing - 0.050" depth - 0.009"/tooth feed - 140SFM
          These rates are for carbide tools,
          Type C-2 for roughing, drilling and reaming.
          Type C-3 for finishing.

           


          INCOLOY® is a registered trademark of the INCO family of companies.



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