Short Description

Model No.: Nimonic-80a-LWNRF-Flange-3"-CL150

China Long Weld Neck Flange Manufacturer www.metallicsteel.com offers ASME B16.5 ASTM B637 Nimonic 80a LWNRF Flange, 3″, CL150.

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Key Specifications / Features

Type:  Nimonic 80a LWNRF Flange
Size: 3″ (DN80)
Class / Pressure150#
StandardASME B16.5

MaterialNimonic Alloy 80A (UNS N07080/w. Nr.2.4952 & 2.4631)

Alloy 80A (Nimonic® alloy 80A) is a wrought, age-hardenable nickel-chromium alloy. Alloy 80A is similar to alloy 75 but made precipitation hardenable by additions of aluminium and titanium. Alloy 80A has good corrosion and oxidation resistance and high tensile and creep-rupture properties at temperatures to 815ºC (1500ºF). Vacuum refined versions are also available. Alloy 80A is used for gas-turbine components (blades, rings, discs), bolts, tube supports in nuclear generators, exhaust valves in internal combustion engines and has many other offshore/marine, automotive and electrical applications.

CHEMICAL COMPOSITION of NIMONIC alloy 80A (UNS N07080/W. Nr. 2.4952 & 2.4631) 

ELEMENT %
GRADE C
max
Cr Si
max
Cu
max
Fe
max
Mn
max
Ti Al Co
max
B
max
Zr
max
Pb
max
S
max
Ni
alloy 80A 0.10 18.0-21.0 1.0 0.2 3.0 1.0 1.8-2.7 1.0-1.8 2.0 0.008 0.15 0.0025 0.015 Balance
B 637
UNS N07080
0.10 18.00-21.00 1.00 3.00 1.00 1.80-2.70 0.50-1.80 0.015 remainder

PHYSICAL PROPERTIES of NIMONIC alloy 80A (UNS N07080/W. Nr. 2.4952 & 2.4631) 

GRADE Density Melting Range
g/cm3 lb/in3 °C °F
alloy 80A 8.19 0.296 1320-1365 2410-2490

HEAT TREATMENT REQUIREMENTS of NIMONIC alloy 80A (UNS N07080/W. Nr. 2.4952 & 2.4631) 

GRADE Solution Treatment Stabilizing Treatment Precipitation Hardening Treatment
B 637
UNS N07080

1950±25°F [1066±14°C]

 hold 8 h, air cool

1560±25°F [849±14°C]

 hold 24 h, air cool

1290±25°F [699±14°C], hold 16 h, air cool

MECHANICAL PROPERTIES of NIMONIC alloy 80A (UNS N07080/W. Nr. 2.4952 & 2.4631) 

GRADE Heat Treatment Tensile Strength
min
Yield Strength
(0.2% Offset), min

Elongation in 2 in

 [50mm] or 4D min, %

Reduction of Area,

min,%

Brinell Hardness

Approximate Rockwel

 Hardness, B and C

psi MPa psi MPa min max
B 637
UNS N07080
solution+stabilize+
precipitation harden
135000 930 90000 620 20

STREE RUPTURE REQUIREMENTS of NIMONIC alloy 80A (UNS N07080/W. Nr. 2.4952 & 2.4631) 

GRADE Heat Treatment Test Temperature Stress, min Time to Rupture

Elongation in 2 in

 or 50mm (or 4D), min, %

psi MPa min, h
B 637
UNS N07080
solution+stabilize+
precipitation harden
1400 760 47000 325 23 3.5

Spec. No. of NIMONIC alloy 80A (UNS N07080/W. Nr. 2.4952 & 2.4631) 

Rod, Bar, Wire and Forging Stock

BS 3076 & HR 1; ASTM B 637

 AECMA PrEn 2188, 2189, 2190, 2396, 2397; AIR 9165-37

Plate, Sheet and Strip BS HR 201, AECMA PrEn 2191
Pipe and Tube BS HR 401
Others BS HR 601, DIN 17742, AFNOR NC 20TA

APPLICATIONS of NIMONIC alloy 80A (UNS N07080/W. Nr. 2.4952 & 2.4631) 

  • Gas turbine engines
  • Die-casting inserts and cores
  • Nuclear steam generators
  • Internal-combustion engines

Long Weld neck flange dimensions are covered in ASME B16.5 – which covers Pipe Flanges and Flanged Fittings for size NPS ½” to 24” for above NPS 26” to 60” it should be as per ASME B16.47.

During dimensional inspection of flange, you should check for

  • Outer & Inner Diameter of body
  • Bolt Circle & Bolt hole Diameter
  • Thickness of weld end
  • Length of the Hub
  • Straightness and alignment of the bolt hole

long weld neck flange dimensions 1024x791 1 - ASME B16.5 ASTM B637 Nimonic 80a LWNRF Flange 3" CL150

Class 150 Long Weld Neck Flange Dimensions

Size in Inch Size in mm Outer Dia. Flange Thick. Hub OD Weld Neck OD RF Dia. RF Height PCD Hub Length No of Bolts Bolt Size UNC Machine Bolt Length RF Stud Length Hole Size ISO Stud Size
A B C D E F G H
1/2 15 90 9.6 30 21.3 34.9 2 60.3 As Required 4 1/2 50 55 5/8 M14
3/4 20 100 11.2 38 26.7 42.9 2 69.9 As Required 4 1/2 50 65 5/8 M14
1 25 110 12.7 49 33.4 50.8 2 79.4 As Required 4 1/2 55 65 5/8 M14
1 1/4 32 115 14.3 59 42.2 63.5 2 88.9 As Required 4 1/2 55 70 5/8 M14
1 1/2 40 125 15.9 65 48.3 73 2 98.4 As Required 4 1/2 65 70 5/8 M14
2 50 150 17.5 78 60.3 92.1 2 120.7 As Required 4 5/8 70 85 3/4 M16
2 1/2 65 180 20.7 90 73 104.8 2 139.7 As Required 4 5/8 75 90 3/4 M16
3 80 190 22.3 108 88.9 127 2 152.4 As Required 4 5/8 75 90 3/4 M16
3 1/2 90 215 22.3 122 101.6 139.7 2 177.8 As Required 8 5/8 75 90 3/4 M16
4 100 230 22.3 135 114.3 157.2 2 190.5 As Required 8 5/8 75 90 3/4 M16
5 125 255 22.3 164 141.3 185.7 2 215.9 As Required 8 3/4 85 95 7/8 M20
6 150 280 23.9 192 168.3 215.9 2 241.3 As Required 8 3/4 85 100 7/8 M20
8 200 345 27 246 219.1 269.9 2 298.5 As Required 8 3/4 90 110 7/8 M20
10 250 405 28.6 305 273 323.8 2 362 As Required 12 7/8 100 115 1 M24
12 300 485 30.2 365 323.8 381 2 431.8 As Required 12 7/8 100 120 1 M24
14 350 535 33.4 400 355.6 412.8 2 476.3 As Required 12 1 115 135 1 1/8 M27
16 400 595 35 457 406.4 469.9 2 539.8 As Required 16 1 115 135 1 1/8 M27
18 450 635 38.1 505 457.2 533.4 2 577.9 As Required 16 1 1/8 125 145 1 1/4 M30
20 500 700 41.3 559 508 584.2 2 635 As Required 20 1 1/8 140 160 1 1/4 M30
24 600 815 46.1 663 610 692.2 2 749.3 As Required 20 1 1/4 150 170 1 3/8 M33

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