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Alloy 800H/HT / Incoloy 800H/HT ®

Alloy 800H/HT / Incoloy 800H/HT ®

W-Nr. 1.4958, 1.4959; UNS N08810, N08811

Composition 800H

Nickel (Ni) Iron (Fe) Chromium (Cr) Carbon (C) Aluminum (Al) Titanium (Ti) Aluminum + Titanium
30.0 – 35.0 min. 39.5 19.0 – 23.0 0.05 – 0.10 0.15 – 0.60 0.15 – 0.60 0.30 – 1.20

Composition 800HT

Nickel (Ni) Iron (Fe) Chromium (Cr) Carbon (C) Aluminum (Al) Titanium (Ti) Aluminum + Titanium
30.0 – 35.0 min. 39.5 19.0 – 23.0 0.06 – 0.10 0.25 – 0.60 0.15 – 0.60 0.85 – 1.20

General Characteristics

Alloy 800H/HT / Incoloy 800H/HT® (W-Nr. 1.4958, 1.4959; UNS N08810, N08811; DIN 17459, 17460) Alloy 800H/HT is a nickel-iron-chromium alloy that shares the same base composition as Incoloy 800, but with greater rupture strength. This enhanced strength is achieved through controlled levels of carbon, aluminum, and titanium, along with high-temperature heat treatment.
Applications include:

  • Chemical and petrochemical industry, due to its high-temperature resistance
  • Power plants, for heating and superheating systems
  • Industrial furnaces, where thermal stability is essential
  • Heat treatment equipment used in demanding applications

Incoloy 800H/HT is ideal for applications that require structural stability, durability, and resistance to elevated temperatures.

View Technical Datasheet
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All Products

Nickel & Nickel Alloys
Alloy 725 / Inconel 725®
W-Nr. 2.4857; UNS N07725
Alloy 925 / Incoloy 925®
W-Nr. 2.4852; UNS N09925
Nichel 200/201
W-Nr. 2.4060 / 61 / 66 / 68, UNS N02200 / N02201
Alloy 400 / Monel 400 ®
W-Nr. 2.4360/2.4361; UNS N04400
Alloy K-500 / Monel K-500 ®
W-Nr. 2.4375, UNS N05500
Alloy 625 / Inconel 625 ®
W-Nr. 2.4856; UNS N06625
Alloy 686 / Inconel 686 ®
W-Nr. 2.4606; UNS N06686
Alloy C-276 / Inconel C-276 ®
W-Nr. 2.4819; UNS N10276
Alloy 22 / Inconel 22 ®
W-Nr. 2.4602; UNS N06022
Alloy 75 / Nimonic 75 ®
W-Nr. 2.4630/2.4951; UNS N06075
Alloy 80A / Nimonic 80A ®
W-Nr. 2.4631/2.4952; UNS N07080
Alloy 90 / Nimonic 90 ®
W-Nr. 2.4632/2.4969; UNS N07090
Alloy X-750 / Inconel X-750 ®
W-Nr. 2.4669; UNS N07750
Alloy 600 / Inconel 600 ®
W-Nr. 2.4816; UNS N06600
Alloy 601 / Inconel 601 ®
W-Nr. 2.4851; UNS N06601
Alloy 718 / Inconel 718 ®
W-Nr. 2.4668; UNS N07718
Alloy HX / Inconel HX ®
W-Nr. 2.4665; UNS N06002
Alloy 800 / Incoloy 800 ®
W-Nr. 1.4876; UNS N08800
Alloy 800H/HT / Incoloy 800H/HT ®
W-Nr. 1.4958, 1.4959; UNS N08810, N08811
Alloy 300/DS / Incoloy 300/DS ®
W-Nr. 1.4862, UNS N08330
Titanium Grade 1
W-Nr. 3.7025; UNS R50400
Titanium Grade 2
W-Nr. 3.7035; UNS R50400
Titanium Grade 5 (6Al4V)
W-Nr. 3.7164; UNS R56400
Titanium Grade 5 ELI (Grade 23)
W-Nr. 3.7165 UNS R56401
Titanium Grade 4
W-Nr. 3.7065; UNS R50700
Titanium Grade 7
W-Nr. 3.7235; UNS R52400
Titanium Grade 9 (3AL2.5V)
W-Nr. 3.7195; UNS R56320
Alloy 15-5 PH
W-Nr. 1.4545; UNS S15500
Alloy 253MA
W-Nr. 1.4835; UNS S30815
Alloy 254 SMO
W-Nr. 1.4547; UNS S31254
Stainless Steel 310 / 310S / 310H
W-Nr. 1.4845; UNS S31000 / S31008 / S31009
Stainless Steel 316
W-Nr. 1.4401; UNS S31600
Stainless Steel 316 Ti
W-Nr. 1.4571; UNS S31635
Stainless Steel 347
W-Nr. 1.4550; UNS S34700
Stainless Steel 410 / 410S
W-Nr. 1.4006/1.4000; UNS S41000/S41008
Stainless Steel 420
W-Nr. 1.4034; UNS S42000
Stainless Steel 904L
W-Nr. 1.4539, UNS N08904
Stainless Steel A286
W-Nr. 1.4980; UNS S66286
Duplex F61
W-Nr.1.4507 / UNS S32550
It is an alloy characterized by a ferritic-austenitic microstructure, containing approximately 40–50% ferrite in the annealed condition. As such, it effectively combines the high mechanical strength of ferritic steels with the corrosion resistance typical of austenitic grades.
W-Nr. 1.4462 / UNS S31803
Super Duplex F53
W-Nr. 1.4410 / UNS S32750
Super Duplex F55
W-Nr. 1.4501 / UNS 32760
Welding Electrodes
Welding Wire
17-4PH
W-Nr. 1.4548, UNS 17400
Inox 304
UNS S30400; W-Nr. 1.4301
Inox 321
UNS S32100; W-Nr. 1.4541

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