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Incoloy 800 Flanges and Alloy 800HT Weld Neck Flange

Manufacturer and Supplier of Inconel 800 Blind Flange in Mumbai, India.

Although nickel alloys have the ability to withstand elevated temperatures, it is alloy 800 and its series that is extraordinary in terms of withstanding carburizing or even nitriding atmospheres. In those applications where the temperatures are limited up to 1100° F, it is advisable to use Incoloy 800 Flanges because they can demonstrate excellent performance. However, for a temperature range beyond  1100° F, most manufacturers recommend using either alloy 800H or alloy 800HT.

Incoloy 800 Flanges

Incoloy 800 Flanges

Alloy 800HT Weld Neck Flange

Alloy 800HT Weld Neck Flange

Inconel 800 Blind Flange

Inconel 800 Blind Flange

These Incoloy alloy components such as the Inconel 800 Blind Flange tend to exhibit resistance to not only creep but also in those areas where resistance to rupture is required. The chemical composition of ALLOY 800HT Weld Neck Flange permits the nickel steel metal to manifest excellent resistance to oxidation, in addition to both carburizing and nitriding atmospheres. For instance, using Incoloy 800HT for extended periods of time between a temperature range of 1200° F - 1600° F does not result in the flange turning brittle, unlike other conventional stainless steels.

Aside from its inherent heat bearing capability, the ASTM B564 UNS N08800 RTJ Flange has high mechanical strength, outstanding corrosion resistance properties, while offering an extremely stable construction, making it suited to demanding operations. Because of the higher content of nickel in Alloy 800HT Socket Weld Flange, the material is known to have resistance to stress induced corrosion cracking. Unlike several stainless steel alloys, the UNS N08800 Slip On Flange is known for being resistant in multiple aqueous mediums.


Table of Content



Confirm UNS N08800 Slip On Flange Dimensions and Alloy 800HT Socket Weld Flange Size Chart before you Buy Material.

UNS N08800 Slip On Flange Standard Dimensions / Size Table of Alloy 800HT Socket Weld Flange


Standard Dimensions Size Ranges Rating
API 6A Flanges 2 1/16” to 30” 2000 Psi to 20000 Psi
ASME / ANSI B16.36 Flanges 1” to 24” Class 300 to 2500 Lbs
ASME B16.48 / API 590 Flanges 1/2” to 24” Class 150 to 2500 Lbs
ASME B16.47 / API 605 Flanges 26” to 60” -
DIN Flanges DN10 to DN3600 PN6 to PN 160
MSS-SP-44 Flanges 12” to 60” Class 150 to 900 Lbs
ASME / ANSI B16.5 Flanges 1/2” to 24” Class 150 to 2500 Lbs
BS 3293 Flanges 26” to 48” Class 150 to 600 Lbs

Equivalent Material of Incoloy 800 Flanges


STANDARD UNS WERKSTOFF NR. JIS EN GOST BS AFNOR OR
Incoloy 800 N08800 1.4876 NCF 800 X10NiCrAlTi32-20 ЭИ670 NA 15 Z8NC32-21 XH32T
Incoloy 800H N08810 1.4958 / 1.4876 NCF 800H X5NiCrAlTi31-20 ЭИ670 NA 15(H) Z8NC33-21 XH32T
Incoloy 800HT N08811 1.4859 / 1.4876 NCF 800HT X8NiCrAlTi32-21 ЭИ670 NA 15(HT) - XH32T

Most Selling types of Incoloy Flanges


Nickel alloy Incoloy 800HT Flange
Nickel alloy Incoloy 800HT Flange

Blind flange Nickel Alloy steel 4/3" Class 300 Inconel 800 flange
Blind flange Nickel Alloy steel 4/3" Class 300 Inconel 800 flange

Steel Flanges Incoloy 800HT UNSN08810 1/2" 600 # Blind Flange rf
Steel Flanges Incoloy 800HT UNSN08810 1/2" 600 # Blind Flange rf

Incoloy 800HT flange 3" (600#) fully finished
Incoloy 800HT flange 3" (600#) fully finished

Incoloy 800H/ 800HT Blind Flange/ BL Flange
Incoloy 800H/ 800HT Blind Flange/ BL Flange

Steel Flanges Incoloy 800HT UNSN08810 1" 300# Blind Flange rf
Steel Flanges Incoloy 800HT UNSN08810 1" 300# Blind Flange rf

Weld Neck Slip on Incoloy 800 flange
Weld Neck Slip on Incoloy 800 flange

Incoloy UNS N08800 Weld Neck Reducing Flanges
Incoloy UNS N08800 Weld Neck Reducing Flanges

Best Price with Warranty of 5 years on Incoloy 800 Forged Flanges and ASTM B564 Nickel Alloy 800 RTJ Flange.


Alloy 800HT Weld Neck Flange Specification List


Specification ASTM B564/ ASME SB564
Size Ranges From 1/2 inch (i.e. 15 NB) upto 48 inch (i.e. 1200NB)
Grade 800/ 800H/ 800HT
Pressure Classes Class 150, Cl 300, 400, Cl. 600, Cl 900, Class 1500 and 2500
JIS Standards 5 K, 10K, 16K, 20 K, 30K, 40K, 63 K
Flange Face Type FF, RF, LMF, SMF, RTJ, LJF.
Standards ASME | BS | DIN | ANSI | GOST | EN Flange
UNI/ DIN / EN Standard 6Bar, 10 Bar, 16Bar, 25 Bar, 40Bar

Check Incoloy 800HT Flanges Price List of All Face Types/ Holes from Class 150 to CL 300 Pressure rating as per ASME/ ANSI B16.5.

Price List of ASTM B564 Nickel Alloy 800 RTJ Flange


Product Price
6 INCH 300# Weld Neck RF Flange Incoloy 800 $1,250.00 - $1,985.00/ Piece
800 Incoloy Flange Alloy 800 Incoloy 800 Nickel Alloy Steel 150# STD 12x1 Inch Nipo Flange $128.50 - $145.25/ Piece
4 INCH 300# Weld Neck RF Flange Incoloy 800 $1,190.00 - $1,965.00/ Piece
Incoloy 800 800H flange alloy N08800 WN RF Flanges $2.30 - $9.89/ Piece

Incoloy 800 Forged Flanges Weights


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

Incoloy 800HT Flanges Pressure Rating


Temperature °F 150# 300# 400# 600# 900# 1500# 2500#
-20 to 100 275 720 960 1440 2160 3600 6000
200 235 620 825 1240 1860 3095 5160
300 215 560 745 1120 1680 2795 4660
400 195 515 685 1025 1540 2570 4280
500 170 480 635 955 1435 2390 3980
600 140 450 600 900 1355 2255 3760
650 125 445 590 890 1330 2220 3700
700 110 430 580 870 1305 2170 3620
750 95 425 570 855 1280 2135 3560
800 80 420 565 845 1265 2110 3520
850 65 420 555 835 1255 2090 3480
900 50 415 555 830 1245 2075 3460
950 35 385 515 775 1160 1930 3220
1000 20 350 465 700 1050 1750 2915
1050 20 345 460 685 1030 1720 2865
1100 20 305 405 610 915 1525 2545
1150 20 235 315 475 710 1185 1970
1200 20 185 245 370 555 925 1545
1250 20 145 195 295 440 735 1230
1300 20 115 155 235 350 585 970
1350 20 95 130 190 290 480 800
1400 20 75 100 150 225 380 630
1450 20 60 80 115 175 290 485
1500 20 40 55 85 125 205 345

Inconel 800 Blind Flange Mechanical Properties Analysis


Grade Melting Point Density Yield Strength (0.2%Offset) Tensile Strength Elongation
800 / 800H / 800HT 1385 °C (2525 °F) 7.94 g/cm3 Psi – 30,000 , MPa – 205 Psi – 75,000 , MPa – 520 30 %

Buy Online Nickel Alloy 800 Blind Flange and Incoloy 800HT SORF Flange and save up to 20% also Get PMI Test Report and Heat treatment Test Certificate.

Chemical Structure of Nickel Alloy 800 Blind Flange


Grade C Cu Mn S Fe Si Ni Al Cr Ti
800 0.10 max 0.75 max 1.50 max 0.015 max 39.50 min 1.00 max 30.00 – 35.00 0.15 – 0.60 19.00 – 23.00 0.15 – 0.60
800H 0.05 – 0.10 0.75 max 1.50 max 0.015 max 39.50 min 1.00 max 30.00 – 35.00 0.15 – 0.60 19.00 – 23.00 0.15 – 0.60
800HT 0.06 – 0.10 0.75 max 1.50 max 0.015 max 39.50 min 1.00 max 30.00 – 35.00 0.15 – 0.60ᴬ 19.00 – 23.00 0.15 – 0.60ᴬ