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Wholesale price stable quality for Incoloy Forged Flanges ASTM B462 UNS N08020 Alloy 20 Forged Flange supply to Maldives Exporter

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Wholesale price stable quality for Incoloy Forged Flanges ASTM B462 UNS N08020 Alloy 20 Forged Flange supply to Maldives Exporter

Yuhong Group manufacture and export ASTM B462 Incoloy Alloy 20 Blind Flanges, Forged and Plate Flanges | Slip-On | Weld Neck | Blind | Lap Joint | Socket Weld | Reducing
We're the most profesional manufacturer, stockist & supplier of ASTM B462 Incoloy Alloy 20 Blind Flanges, Forged and Plate Flanges | Slip-On | Weld Neck | Blind | Lap Joint | Socket Weld | Reducing. Supplying ASTM B462 Incoloy Alloy 20 Blind Flanges

ASTM B462 UNS N08020 Alloy 20 Forged Flange.  ASTM B462 UNS N08020 Alloy 20 Flange for Corrosive High-Temperature Services.


General Introduction to Alloy 20 (UNS N08020)

Alloy 20, designated as UNS N08020, is an austenitic corrosion-resistant alloy with nominal composition of 35Ni-35Fe-20Cr-Cb. It has the addition of small amount of copper and molybdenum. Alloy 20 was originally developed in 1951 for dilute sulfuric acid service. Niobium is added which makes the alloy can be used without PWHT. Alloy 20 flanges can be readily made from ASTM B462 UNS N08020 forgings or ASTM B463 UNS N08020 plates. They can be furnished in a variety of flange types including weld neck, slip on, threaded, socket welding, blind, lap joint, and LWN, etc. There are 7 rating classes available: Class 150, Class 300, Class 400, Class 600, Class 900, Class 1500, Class 2500.


ASTM B462 UNS N08020 (Alloy 20), weld neck flanges, Class 150 RF, 1-1/2″ SCH40.


ASTM B462 UNS N08020 Alloy 20 Forged Flange

Chemical Composition

Element Wt, %
Carbon [C] ≤0.07
Manganese [Mn] ≤2.00
Phosphorus [P] ≤0.045
Sulfur [S] ≤0.035
Silicon [Si] ≤1.00
Nickel [Ni] 32.00~38.00
Chromium [Cr] 19.00~21.00
Molybdenum [Mo] 2.00~3.00
Copper [Cu] 3.00~4.00
Niobium+Tantalum [Nb+Ta] 8xCarbon~1
Iron Remainder

*The tabulated values are abstracted from ASTM B462 Gr. UNS N08020.

Mechanical Properties

Alloy Tensile Strength, min. Yield Strength, min. Elongation, min. Reduction of Area, min.
ASTM B462 ksi MPa ksi MPa % %
UNS N08020 80 551 35 241 30.0 50.0
*All values shall be measured at room temperature.
*Alloy 20 flanges shall be supplied in stabilized-annealed condition.

Pressure-Temperature Ratings for Alloy 20(UNS N08020) Flanges

Temp. °C Class 150 Class 300 Class 400 Class 600 Class 900 Class 1500 Class 2500
-29~38 20.0 51.7 68.9 103.4 155.1 258.6 430.9
50 19.5 51.7 68.9 103.4 155.1 258.6 430.9
100 17.7 50.9 67.8 101.7 152.6 254.4 423.9
150 15.8 48.9 65.3 97.9 146.8 244.7 407.8
200 13.8 47.2 62.9 94.3 141.5 235.8 392.9
250 12.1 45.5 60.7 91.0 136.5 227.5 379.2
300 10.2 42.9 57.0 85.7 128.6 214.4 357.1
325 9.3 41.4 55.0 82.6 124.0 206.6 344.3
350 8.4 40.3 53.6 80.4 120.7 201.1 335.3
375 7.4 38.9 51.6 77.6 116.5 194.1 323.2
400 6.5 36.5 48.9 73.3 109.8 183.1 304.9
425 5.5 35.2 46.5 70.0 105.1 175.1 291.6
*Working pressures by classes, unit: bar.

ASTM B16.5 weld neck flange, 300# 4″ SCH40 RF, Alloy 20 (UNS N08020) material.

Temp. °F Class 150 Class 300 Class 400 Class 600 Class 900 Class 1500 Class 2500
-20~100 290 750 1000 1500 2250 3750 6250
200 260 740 990 1485 2225 3710 6180
300 230 710 945 1420 2130 3550 5920
400 200 680 910 1365 2045 3410 5680
500 170 655 875 1310 1965 3275 5460
600 140 605 805 1210 1815 3025 5040
650 125 590 785 1175 1765 2940 4905
700 110 570 755 1135 1705 2840 4730
750 95 530 710 1065 1595 2660 4430
800 80 510 675 1015 1525 2540 4230
*Working pressures by classes, unit: psig.

"Our products are broadly regarded and reliable by end users and can meet up with constantly transforming financial and social requires of ASTM B462 UNS N08020 Alloy 20 Forged Flange. The product will supply to all over the world, such as: Tuvalu,Uganda,Albania. With good quality reasonable price and sincere service we enjoy a good reputation. Merchandise are exported to South America Australia Southeast Asia and so on. Warmly welcome customers at home and abroad to cooperate with us for the brilliant future.

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