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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

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                                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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