Inconel 800 Flanges & Incoloy 800 Flanges Manufacturer, Supplier & Exporter

Inconel 800 Flanges and Incoloy 800 Flanges refer to the same alloy (UNS N08800 / 1.4876). “Incoloy 800” is the registered trade name by Special Metals Corporation, while “Inconel 800” is a widely used market synonym. Both terms cover the same nickel-iron-chromium alloy and are used interchangeably in the industry.

ASTM B564 / ASME SB564  |  UNS N08800  |  DIN 1.4876  |  Class 150–2500  |  Sizes ½″–48″

What are Inconel 800 / Incoloy 800 Flanges?

Incoloy 800 Flanges that are also widely traded as Inconel 800 Flanges — are high-performance pipe flanges made of UNS N08800, a nickel-iron-chromium alloy that has exceptional oxidation, carburization, sulfidation, and high temperature corrosion resistance. Solitaire Overseas produces and exports full set of Alloy 800 Flanges in ASTM B564 / ASME SB564 in weld neck, blind, slip on, socket weld, RTJ, and orifice in Class 150–2500 and 1/2 to 48 inches.

Incoloy 800 Flanges (UNS N08800) are high-performance pipe flanges produced by using a nickel-iron-chromium alloy that consists of about 30–35 percent nickel and 19–23 percent chromium. They are the best option due to their high thermal stability and resistance against corrosion in tough applications in petrochemical, refinery, power generation, and aerospace industries.

Standard Inconel 800 Flanges have good performance to temperatures of 1100°F (593°C), they are strong, and they resist oxidation, carburization, nitriding, and sulfidation. It is also characterized by the high content of nickel which gives it excellent resistance to stress corrosion cracking under aqueous conditions.

In applications with a continuous service requirement greater than 1100°F, the improved grades, Incoloy 800H (N08810) and Incoloy 800HT (N08811) have a better creep-rupture strength and grain-size control and can be used reliably over 1200 to 1600°F without embrittling like the traditional stainless steels.

Solitaire Overseas manufactures and exports all variants of Incoloy 800 Flanges including Weld Neck, Blind, Slip On, Socket Weld, Lap Joint, RTJ, Reducing, Orifice and Long Weld Neck types to global buyers across 40+ countries. We are also a full-range supplier of high-nickel Inconel flanges.

Inconel 800 / Incoloy 800 Flanges Manufacturer & Exporter — Solitaire Overseas

Solitaire Overseas is a Mumbai-based, ISO 9001:2015 certified and IBR-approved manufacturer and global exporter of Inconel 800 Flanges (UNS N08800 / DIN 1.4876), supplying the oil & gas, petrochemical, and power generation sectors. Every Incoloy 800 Flange we supply is manufactured to ASTM B564 / ASME SB564, tested to EN 10204/3.1B, and backed by full PMI and radiography reports. We export to the USA, UK, UAE, Germany, Saudi Arabia, Singapore, Australia and 35+ countries worldwide.

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Table of Contents

Specifications of Incoloy 800 Flanges / Inconel 800 Flanges (ASTM B564 UNS N08800)

Category Details
Material Standard ASTM B564 / ASME SB564
Alloy Designations Inconel 800, Incoloy 800, Alloy 800, UNS N08800, DIN 1.4876, NCF 800
Flange Size Range ½″ (15 NB) to 48″ (1200 NB), DN10–DN5000
Flange Dimensions ANSI/ASME B16.5, B16.47 Series A & B, B16.48, BS4504, BS10, EN-1092, DIN, GOST
Flange Standards ANSI, ASME, AWWA, BS 10 Table D & E, DIN, EN, GOST
Pressure Class / Rating Class 150, 300, 600, 900, 1500, 2500 LBS; PN6, PN10, PN16, PN25, PN40, PN64
Face / Connection Types Raised Face (RF), Flat Face (FF), Ring Type Joint (RTJ), Large Male-Female (LMF), Small Male-Female (SMF), Lap-Joint Face (LJF), Tongue & Groove
Flange Types WNRF, SORF, BLRF, SWRF, LJRF, RTJ, Orifice, Reducing, Long Weld Neck, Spectacle Blind
Test Certificates EN 10204/3.1B Raw Material Certificate, 100% Radiography Test, Third-Party Inspection, PMI
HS Code 73079190

Equivalent Grades – Inconel 800 / Incoloy 800 / Alloy 800 / UNS N08800

Grade UNS Werkstoff Nr. JIS EN GOST BS AFNOR
Incoloy 800 / Inconel 800 N08800 1.4876 NCF 800 X10NiCrAlTi32-20 ЭИ670 NA 15 Z8NC32-21
Incoloy 800H N08810 1.4958 / 1.4876 NCF 800H X5NiCrAlTi31-20 ЭИ670 NA 15(H) Z8NC33-21
Incoloy 800HT N08811 1.4859 / 1.4876 NCF 800HT X8NiCrAlTi32-21 ЭИ670 NA 15(HT)

Note: In trade and procurement, Inconel 800 Flanges and Incoloy 800 Flanges refer to the same material — UNS N08800 (DIN 1.4876). Incoloy® is a registered trademark of Special Metals Corporation; Inconel 800 is the widely used market synonym.

Chemical Composition of Inconel 800 / Incoloy 800 Flanges (UNS N08800 / N08810 / N08811)

Grade Ni Cr Fe C Mn Si Cu Al Ti S
800 (N08800) 30.0–35.0 19.0–23.0 ≥39.50 ≤0.10 ≤1.50 ≤1.00 ≤0.75 0.15–0.60 0.15–0.60 ≤0.015
800H (N08810) 30.0–35.0 19.0–23.0 ≥39.50 0.05–0.10 ≤1.50 ≤1.00 ≤0.75 0.15–0.60 0.15–0.60 ≤0.015
800HT (N08811) 30.0–35.0 19.0–23.0 ≥39.50 0.06–0.10 ≤1.50 ≤1.00 ≤0.75 0.15–0.60 0.15–0.60 ≤0.015

Mechanical Properties of Incoloy 800 / Inconel 800 Flanges (ASTM B564)

Grade Density (g/cm³) Melting Point Tensile Strength Yield Strength (0.2%) Elongation (%) Hardness (Brinell)
Alloy 800 / N08800 7.94 1385°C (2525°F) ≥517 MPa (75 ksi) ≥207 MPa (30 ksi) ≥30% ≤192 HB
Alloy 800H / N08810 7.94 1385°C (2525°F) ≥448 MPa (65 ksi) ≥172 MPa (25 ksi) ≥30% ≤192 HB
Alloy 800HT / N08811 7.94 1385°C (2525°F) ≥448 MPa (65 ksi) ≥172 MPa (25 ksi) ≥30% ≤192 HB

Modulus of Elasticity & Fatigue Strength — Incoloy 800 / Inconel 800

Property Value Condition
Modulus of Elasticity 196 GPa (28.4 × 10⁶ psi) Room Temperature
Fatigue Strength 220 MPa 10⁸ cycles, room temperature
Thermal Conductivity 11.5 W/m·K At 20°C
Electrical Resistivity 1.03 µΩ·m At 20°C
Coefficient of Thermal Expansion 14.4 µm/m·°C 20–100°C
Specific Heat 460 J/kg·K At 20°C

Dimensions of Incoloy 800 Flanges — ASME B16.5 Class 150 (All dimensions in inches)

NPS OD RF Dia.(R) Hole Dia. No. of Holes Min. Thk.(T) Bolt Circle(BC) WN Bore(WB) SO Bore(SB) Hub Top(HT) Hub Base(HB) WN Len.(WL) SO Len.(SL)
1⁄2 3.50 1.38 0.62 4 0.38 2.38 0.62 0.88 0.84 1.19 1.81 0.56
3⁄4 3.88 1.69 0.62 4 0.44 2.75 0.82 1.09 1.05 1.50 2.00 0.56
1 4.25 2.00 0.62 4 0.50 3.12 1.05 1.36 1.32 1.94 2.12 0.62
11⁄4 4.62 2.50 0.62 4 0.56 3.50 1.38 1.70 1.66 2.31 2.19 0.75
11⁄2 5.00 2.88 0.62 4 0.62 3.88 1.61 1.95 1.90 2.56 2.38 0.81
2 6.00 3.62 0.75 4 0.69 4.75 2.07 2.44 2.38 3.06 2.44 0.94
21⁄2 7.00 4.12 0.75 4 0.81 5.50 2.47 2.94 2.88 3.56 2.69 1.06
3 7.50 5.00 0.75 4 0.88 6.00 3.07 3.57 3.50 4.25 2.69 1.12
31⁄2 8.50 5.50 0.75 8 0.88 7.00 3.55 4.07 4.00 4.81 2.75 1.19
4 9.00 6.19 0.75 8 0.88 7.50 4.03 4.57 4.50 5.31 2.94 1.25
5 10.00 7.31 0.88 8 0.88 8.50 5.05 5.66 5.56 6.44 3.44 1.38
6 11.00 8.50 0.88 8 0.94 9.50 6.07 6.72 6.63 7.56 3.44 1.50
8 13.50 10.62 0.88 8 1.06 11.75 7.98 8.72 8.63 9.69 3.94 1.69
10 16.00 12.75 1.00 12 1.12 14.25 10.02 10.88 10.75 12.00 3.94 1.88
12 19.00 15.00 1.00 12 1.19 17.00 12.00 12.88 12.75 14.38 4.44 2.12
14 21.00 16.25 1.12 12 1.31 18.75 13.25 14.14 14.00 15.75 4.94 2.19
16 23.50 18.50 1.12 16 1.38 21.25 15.25 16.16 16.00 18.00 4.94 2.44
18 25.00 21.00 1.25 16 1.50 22.75 17.25 18.18 18.00 19.88 5.44 2.62
20 27.50 23.00 1.25 20 1.62 25.00 19.25 20.20 20.00 22.00 5.62 2.81
22 29.50 25.25 1.38 20 1.75 27.25 21.25 22.22 22.00 24.25 5.82 3.07
24 32.00 27.25 1.38 20 1.81 29.50 23.25 24.25 24.00 26.12 5.94 3.19

Additional Standards: API 6A flanges available in 2 1/16″ to 30″ (2000–20000 PSI) for oilfield/wellhead applications. For Class 300, 600, 900, 1500 and 2500 Incoloy 800 Flange dimensions, contact our technical team or request a full dimensional chart PDF.

Incoloy N08800 Blind Flanges Thickness (inches)

NPS O.D. STD Wall O.D. EXT Hvy O.D. Sch 10 Sch 20 Sch 30 Sch 40 Sch 60 Sch 80 Sch 100 Sch 120 Sch 140 Sch 160 XX Hvy
½ 0.84 0.109 0.147 0.083 - - 0.109 - 0.147 - - - 0.188 0.294
¾ 1.05 0.113 0.154 0.083 - - 0.113 - 0.154 - - - 0.219 0.308
1 1.315 0.133 0.179 0.109 - - 0.133 - 0.179 - - - 0.25 0.358
1 ¼ 1.66 0.14 0.191 0.109 - - 0.14 - 0.191 - - - 0.25 0.382
1 ½ 1.9 0.145 0.2 0.109 - - 0.145 - 0.2 - - - 0.281 0.4
2 2.375 0.154 0.218 0.109 - - 0.154 - 0.218 - - - 0.344 0.436
2 ½ 2.875 0.203 0.276 0.12 - - 0.203 - 0.276 - - - 0.375 0.552
3 3.5 0.216 0.3 0.12 - - 0.216 - 0.3 - - - 0.438 0.6
3 ½ 4 0.226 0.318 0.12 - - 0.226 - 0.318 - - - - 0.636
4 4.5 0.237 0.337 0.12 - - 0.237 - 0.337 - 0.438 - 0.531 0.674
6 6.625 0.28 0.432 0.134 - - 0.28 - 0.432 - 0.562 - 0.719 0.864
8 8.625 0.322 0.5 0.148 0.25 0.277 0.322 0.406 0.5 0.594 0.719 0.812 0.906 0.875
10 10.75 0.365 0.5 0.165 0.25 0.307 0.365 0.5 0.594 0.719 0.844 1 1.125 1
12 12.75 0.375 0.5 0.18 0.25 0.33 0.406 0.562 0.688 0.844 1 1.125 1.312 1
14 14 0.375 0.5 0.25 0.312 0.375 0.438 0.594 0.75 0.938 1.094 1.25 1.406 -
16 16 0.375 0.5 0.25 0.312 0.375 0.5 0.656 0.844 1.031 1.219 1.438 1.594 -
18 18 0.375 0.5 0.25 0.312 0.438 0.562 0.75 0.938 1.156 1.375 1.562 1.781 -
24 24 0.375 0.5 0.25 0.375 0.562 0.688 0.969 1.219 1.531 1.812 2.062 2.344 -

Incoloy 800 Flange Bolt Data — ASME B16.5 / DIN / AS4087 Standards

Standard Class No. of Bolts Bolt Circle Dia. O.D. Bolt Hole Dia. Bolt Size
AS4087 PN14 4 67 95 14 M12
ISO 7005 Flange (DIN) PN6 4 55 80 11 M10
PN10 4 65 95 14 M12
PN16 4 65 95 14 M12
PN20 4 60.5 90 16 M14
PN25 4 65 95 14 M12
PN40 4 65 95 14 M12
AS 2129 Flange Table C 4 67 95 14 13
Table D 4 67 95 14 13
Table E 4 67 95 14 13
Table F 4 67 95 14 13
Table H 4 83 114 17 16
Table J 4 83 114 17 16
ANSI B16.5 ANSI 150 4 60 89 16 13
ANSI 300 4 67 95 16 13
ANSI 600 4 67 95 16 13
ANSI 900 / 1500 4 83 121 22 19

Alloy 800 Flanges Pressure Rating (PSI) — ASME B16.5

Temp. °F 2500# 1500# 900# 600# 400# 300# 150#
-20 to 100 6000 3600 2160 1440 960 720 275
200 5160 3095 1860 1240 825 620 235
300 4660 2795 1680 1120 745 560 215
400 4280 2570 1540 1025 685 515 195
500 3980 2390 1435 955 635 480 170
600 3760 2255 1355 900 600 450 140
650 3700 2220 1330 890 590 445 125
700 3620 2170 1305 870 580 430 110
750 3560 2135 1280 855 570 425 95
800 3520 2110 1265 845 565 420 80
850 3480 2090 1255 835 555 420 65
900 3460 2075 1245 830 555 415 50
1000 2915 1750 1050 700 465 350 20
1100 2545 1525 915 610 405 305 20
1200 1545 925 555 370 245 185 20
1300 970 585 350 235 155 115 20
1400 630 380 225 150 100 75 20
1500 345 205 125 85 55 40 20

Need Incoloy 800 Flanges fast? Ex-stock inventory of ASTM B564 UNS N08800 flanges in all common sizes.

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ASTM B564 Incoloy 800 Flanges Price List

Incoloy 800 Flange prices vary by grade (800 / 800H / 800HT), type, size, pressure class, and order quantity. We offer ex-stock pricing for standard sizes and ex-works pricing for custom orders. All orders include EN 10204/3.1B material test certificates.

Product Description FOB Price (USD)
½″ Class 600 SO RF UNS N08800 Flange US $2.00–$10.00 / Piece
Nickel Alloy Steel Incoloy 800 Slip On Flange RF 5″ 600LB Forged US $23.40–$25.30 / Piece
Customized Precision Incoloy 800 Flange US $5.00–$20.00 / Piece
Incoloy Alloy 800 UNS N08800 3/4″ 150# Blind Flange RF US $35.00–$39.00 / Piece
Customized Precision Incoloy 800 / 800H / HT Flanges US $17.50–$20.00 / Piece
Incoloy 800 UNS N08800 Paddle Blind and Spacer Ring US $5.00–$7.00 / Piece
Incoloy 800 N08800 SO SW WN PL LJ RJ RF BLD US $1.00 / Piece
½″ Class 600 SO RF N08800 Orifice Flange US $11.00–$30.00 / Piece
Incoloy 800 RF 4″ 150BL ASME B16.5 US $456.92–$458.00 / Piece
Large Diameter Incoloy 800 Flange (Shipbuilding & Marine) US $20.00 / Piece
ASTM B564 Incoloy 800 UNS N08800 Weld Neck Flat Face (FF) Flanges US $3.00 / Piece
½″ Class 600 SO RF N08800 Flange US $1.00–$1.80 / kg
SORF / WNRF Incoloy 800 Forged Flanges US $5.00–$7.00 / Piece

Note: Prices are indicative and subject to change based on grade, size, quantity, and market conditions. Contact us for a current price list with certified MTC.

Types of Incoloy 800 / Inconel 800 Flanges

Incoloy 800 Weld Neck Flange (WNRF)
Incoloy 800 Weld Neck Flange (WNRF)
Inconel 800 Blind Flange (BLRF)
Inconel 800 Blind Flange (BLRF)
Incoloy 800 Slip On Flange (SORF)
Incoloy 800 Slip On Flange (SORF)
Alloy 800 Socket Weld Flange (SWRF)
Alloy 800 Socket Weld Flange (SWRF)
UNS N08800 Lap Joint Flange (LJRF)
UNS N08800 Lap Joint Flange (LJRF)
Incoloy 800 Ring Type Joint Flange (RTJ)
Incoloy 800 Ring Type Joint Flange (RTJ)
Alloy 800 Orifice Flange
Alloy 800 Orifice Flange
Incoloy 800 Long Weld Neck Flange
Incoloy 800 Long Weld Neck Flange
Alloy 800HT Reducing Flange
Alloy 800HT Reducing Flange
UNS N08800 Spectacle Blind Flange
UNS N08800 Spectacle Blind Flange
Incoloy 800 Threaded Flange
Incoloy 800 Threaded Flange
1.4876 Plate Flange (SORF / BLRF)
1.4876 Plate Flange (SORF / BLRF)

Applications of Incoloy 800 / Inconel 800 Flanges

The outstanding combination of heat resistance, corrosion resistance, and mechanical strength makes Incoloy 800 Flanges and Inconel 800 Flanges the preferred choice across demanding industrial sectors:

  • Petrochemical Plants: Ethylene cracking furnaces and reformer outlets — resistance to carburization and cyclic thermal stress.
  • Oil & Gas Refineries: High-temperature process pipelines where sulfidation and oxidation resistance are critical.
  • Power Generation: Steam generator headers and superheater piping above 500°C — Alloy 800H/HT creep resistance.
  • Chemical Processing: Nitric acid, ammonia, and organic chemical plants where corrosion and heat stability are required.
  • Heat Exchangers: Tube sheet and shell flanges in high-temperature shell-and-tube heat exchangers.
  • Ammonia Plants: Ammonia synthesis and reforming service requiring nitriding and carburization resistance.
  • Aerospace: Exhaust and hot-gas path components requiring high-temperature strength and oxidation resistance.
  • Marine Environments: Seawater-cooled systems and offshore piping — corrosion resistance in chloride environments.
  • Nuclear Applications: Steam generator flanges and heat exchange systems in nuclear power plants.
  • Pulp & Paper: Digester and black liquor evaporator flanges — sulfidic and alkaline corrosion resistance.
  • LNG / Cryogenic: Cryogenic flanges where toughness at low temperatures and oxidation resistance are required.
  • Pressure Vessels: Nozzle flanges and manhole flanges on high-temperature pressure vessels and reactors.

Incoloy 800 vs 800H vs 800HT – Key Differences

All three grades share the same base chemistry (Fe-Ni-Cr), but they differ in carbon content, grain size, and allowable design temperature:

Property

Incoloy 800 (N08800)

Incoloy 800H (N08810)

Incoloy 800HT (N08811)

Max Service Temp.

Up to 1100°F (593°C)

Up to 1500°F (816°C)

Up to 1600°F (871°C)

Carbon Content

≤0.10%

0.05–0.10%

0.06–0.10%

Grain Size Control

No requirement

Coarse grain (ASTM 5 or coarser)

Coarse grain (ASTM 5 or coarser)

Ti + Al Content

No min. sum requirement

No min. sum requirement

(Ti + Al) ≥ 0.85%

Primary Use

General high-temperature service

Elevated temperature creep service

Highest temp. creep & rupture service

Equivalent Standards

UNS N08800, 1.4876

UNS N08810, 1.4958

UNS N08811, 1.4859

Note: Alloy 800H and 800HT flanges are also covered under ASTM B564 and can be supplied by Solitaire Overseas. Please specify the grade when requesting a quotation.

Heat Treatment of Incoloy 800 / Inconel 800 Flanges

Standard Alloy 800 Flanges (N08800) are solution annealed at 980°C–1040°C (1800°F–1900°F) followed by rapid quenching in water or rapid air cooling. This treatment produces a fine-grained microstructure suitable for general corrosion and moderate temperature service.

Alloy 800H (N08810) and Alloy 800HT (N08811) require annealing at a minimum of 1149°C (2100°F) to develop the required coarse grain size (ASTM Grain Size No. 5 or coarser). This coarse grain structure provides the superior creep-rupture strength needed for prolonged service above 1100°F. The 800HT grade additionally requires the combined titanium and aluminium content to be ≥0.85% to further enhance high-temperature stability.

Testing of Incoloy 800 Forged Flanges

Every Incoloy 800 Flange supplied by Solitaire Overseas undergoes comprehensive testing to confirm alloy integrity and dimensional compliance before dispatch:

  • Hardness Test (Brinell)
  • Tensile Testing
  • Hydrostatic Pressure Test
  • PMI (Positive Material ID)
  • Radiography (RT)
  • Dye Penetrant Test (DP)
  • Ultrasonic Test (UT)
  • Third-Party Inspection

Third-party inspection by TÜV, Lloyds, DNV, Bureau Veritas, or SGS can be arranged on request.

Why Choose Solitaire Overseas for Inconel 800 / Incoloy 800 Flanges?

  • ISO Certified & IBR Approved
    ISO 9001:2015 certified, IBR-approved, with EN 10204/3.1B material test certificates for every heat.
  • Full Traceability
    100% PMI testing, radiography, and hydrostatic testing ensure alloy integrity on every order.
  • Custom Sizes
    Non-standard and large-diameter sizes up to 60″ manufactured as per buyer drawings.
  • All Grades Ex-Stock
    Incoloy 800 (N08800), 800H (N08810), and 800HT (N08811) available from stock.
  • Global Exporter
    Exporting to USA, UK, UAE, Saudi Arabia, Germany, Singapore, Australia, and 35+ countries.
  • Competitive Pricing
    Direct-from-manufacturer pricing with no intermediary mark-up. Bulk discounts available.

Request a Quote for Incoloy 800 / Inconel 800 Flanges

Our team responds within 24 hours with a detailed quotation and MTC. Email sales@solitaire-overseas.com or fill out the enquiry form.

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Frequently Asked Questions – Inconel 800 & Incoloy 800 Flanges

Inconel 800 Flanges and Incoloy 800 Flanges are the same product. Both refer to flanges made from UNS N08800 (DIN 1.4876), a nickel-iron-chromium alloy. "Incoloy 800" is the registered trademark of Special Metals Corporation, whereas "Inconel 800" is a widely adopted trade alias used across the piping, oil & gas, and chemical industries. Solitaire Overseas manufactures and supplies both under these names to serve all search and procurement requirements.

800 Flanges (N08800) perform excellently up to 1100°F (593°C). For continuous high-temperature service above this threshold, Alloy 800H (N08810) and Alloy 800HT (N08811) are recommended, capable of withstanding 1200°F–1600°F without embrittlement or significant loss of mechanical properties.

Flanges comply with: ASTM B564 / ASME SB564 (material), ANSI/ASME B16.5 (dimensions, ½″–24″), ASME B16.47 Series A & B (large bore, 26″–60″), API 6A (oilfield/wellhead), DIN, EN 1092-1, and BS4504. Third-party inspection (TÜV, Bureau Veritas, Lloyd's) is available on request.

Available types include: Weld Neck (WNRF), Slip On (SORF), Blind (BLRF), Socket Weld (SWRF), Lap Joint (LJRF), Ring Type Joint (RTJ), Orifice, Long Weld Neck, Reducing, Spectacle Blind, and Threaded flanges. All types available in Class 150, 300, 600, 900, 1500, and 2500 LBS.

We stock and manufacture Weld Neck (WNRF), Slip-On (SORF), Blind (BLRF), Socket Weld, Threaded (Screwed), Lap Joint, Ring-Type Joint (RTJ), Plate, Spectacle Blind, Orifice, Expander, Reducer, and Spacer flanges in Alloy 800 / 800H / 800HT.

The price of Incoloy 800 Flanges depends on grade (800 / 800H / 800HT), flange type, size, pressure class, and quantity. Contact Solitaire Overseas for a detailed, competitive price list. We offer best factory-direct pricing with certified test reports.

The UNS number for Incoloy 800 (also called Inconel 800) is UNS N08800. The DIN/Werkstoff number is 1.4876. The JIS designation is NCF 800, and the EN designation is X10NiCrAlTi32-20.

Key industries include: petrochemical processing (ethylene cracking, reforming), oil & gas refineries, power generation (steam generators, heat exchangers), chemical plants, aerospace, marine, pulp & paper, nuclear, ammonia plants, and cryogenic/LNG applications. The alloy's resistance to carburization, sulfidation, and oxidation makes it indispensable wherever high-temperature corrosion is a concern.