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Hastelloy flanges

Duplex flanges specifications

Hastelloy flanges specification


Hastelloy flanges standard Alloy c276 blind flange size Temperature of DIN 2.4819 slip on flange
  • ASTM B564
  • ASME SB564
  • 1/2" NB to 60" NB
  • 1370°C
Manufacturing methods of nickel alloy C276 weld neck flange Flange face type hastelloy alloy socket weld flange coating
  • Rolled
  • Turning
  • CNC machining
  • Stamping
  • Forged
  • Milling
  • Drilling
  • Flate face
  • Ring type joint
  • Raised face
  • Zinc plated
  • Yellow transparent
  • Oil black paint
  • Anti-rust paint
Thread types of ASTM B564 hastelloy threaded flange Types of C276 flange Pressure class of C276 hastelloy pipe flange
  • FNPT thread (Female) – ASME B1.20.1
  • BSPT thread (Female)
  • NPT thread
  • FPT thread
  • MNPT thread(Male)
  • BSPP thread (Female & male)
  • MPT thread
  • BSP thread
  • Nickel C276 blind flange
  • Slip on flange
  • Weld neck flange
  • Socket weld flange
  • Hastelloy C-276 forged flange
  • Threaded flange
  • Alloy C276 hastelloy lap joint flange
  • 150#
  • 300#
  • 600#
  • 900#
  • 1500#
  • 2500#
  • PN6
  • PN10
  • PN16
  • PN25
  • PN40

We are alloy c276 blind flanges manufacturer in India, view pressure rating of ASTM B564 N10276 weld neck flanges here

Alloy c276 weld neck flange pressure ratings


Temp. °C 600 425 500 475 538 550 450 575 400 625
Class 150 - 5.5 2.8 3.7 1.4 - 4.6 - 6.5 -
Class 300 6.6 35.2 28.2 31.7 16.5 13.9 33.7 9.4 36.5 5.1
Class 400 8.9 46.5 37.6 42.3 22.1 18.6 45.1 12.6 48.9 6.8
Class 600 13.3 70.0 56.5 63.4 33.1 27.9 67.7 18.9 73.3 10.3
Class 900 19.9 105.1 84.7 95.1 49.6 41.8 101.4 28.3 109.8 15.4
Class 1500 33.2 175.1 140.9 158.2 82.7 69.7 169.0 47.2 183.1 25.7
Class 2500 55.3 291.6 235.0 263.9 137.9 116.2 281.8 78.6 304.9 42.8
Temp. °C 350 50 200 150 250 300 100 325 -29 to 38 375
Class 150 8.4 19.5 13.8 15.8 12.1 10.2 17.7 9.3 20.0 7.4
Class 300 40.3 51.7 48.6 50.3 46.3 42.9 51.5 41.4 51.7 38.9
Class 400 53.6 68.9 64.8 66.8 61.7 57.0 68.7 55.0 68.9 51.6
Class 600 80.4 103.4 97.2 100.3 92.7 85.7 103.0 82.6 103.4 77.6
Class 900 120.7 155.1 145.8 150.6 139.0 128.6 154.6 124.0 155.1 116.5
Class 1500 201.1 258.6 243.4 250.8 231.8 214.4 257.6 206.6 258.6 194.1
Class 2500 335.3 430.9 405.4 418.2 386.2 357.1 429.4 344.3 430.9 323.2

We have ready stock of hastelloy c22 socket weld flanges for petrochemical industry, check 2.4819 hastelloy C276 pipe flange tolerances and available face finish

DIN 2.4819 socket weld flange tolerances


Hastelloy Flanges Tolerance Table
A O.D
  • O.D. is over 24": ±1/8" (3.2 mm)
  • O.D. is 24" or less: ±1/16" (1.6 mm)
  Eccentricity of bolt circle with respect to facing
  • 3" & larger ±1/16" (1.6 mm) max
  • 2 1/2" & smaller ±1/32" (0.8 mm) max
D I.D
  • 12" thru 18": +1/8" (3.2 mm)
  • 10" & smaller: ±1/32" (0.8 mm)
  • 20" & larger: -1/16" (1.6 mm)
B Diameter of contact face
  • 1/16" raised face: ±1/32" (0.8 mm)
  • 1/4" RF, T/G, (m/f): ±1/64" (0.4 mm)
H Diameter of hub at point of welding
  • 6" & larger: +5/32" (4.0 mm), -1/32 (0.8 mm)
  • 5" & smaller: +3/32" (2.4 mm), -1/32" (0.8 mm)
P Drilling
  • Bolts hole spacing: ±1/32" (0.8 mm)
  • Circle Bolts: ±1/16" (1.6 mm)
C Thickness
  • 20" & larger: ±3/16" (4.8 mm), -0"
  • 18" & smaller: ±1/8" (3.2 mm), -0"
J Diameter of hub at base
  • hub base is over 24": ±1/8" (3.2 mm)
  • hub base is 24" or smaller: ±1/16" (1.6 mm)
K Length of hub
  • 12" & larger: ±1/8" (3.2 mm)
  • 10" & smaller: ±1/16" (1.6 mm)

Hastelloy C-276 blind flange finishes


  • Serrated finish
  • Smooth Finish
  • Spiral Serrated
  • Concentric Serrated
  • Mirror finish
  • Stock Finish
  • Zinc Plated

ASTM B564 Hastelloy flange types


Hastelloy blind flange

Hastelloy blind flange

ASTM B564 hastelloy weld neck flanges

ASTM B564 hastelloy weld neck flange

Nickel alloy C276 socket weld flange

Nickel alloy C276 socket weld flange

2.4819 hastelloy C276 threaded flange

2.4819 hastelloy C276 threaded flange

Hastelloy alloy C276 slip on flange

Hastelloy alloy C276 slip on flange

DIN 2.4819 reducing flange

DIN 2.4819 reducing flange

Alloy c276 lap joint flange

Alloy c276 lap joint flange

C276 plate flanges

C276 plate flanges

We supply SB564 N10276 slip on flange and hastelloy c276 flanges in 1/2 inch(15 NB) to 48 inch (1200NB) size range

Dimension chart of alloy C276 hastelloy weld neck flange


Alloy C276 hastelloy weld neck flange dimension
CLass Thk B Diameter D Diameter K Diameter G H Diameter A Diameter L NO. L
600 20.7 95 66.7 35.1 58.4 38 15.9 4
300 14.3 95 66.7 35.1 52.6 38 15.9 4
2500 36.6 135 88.9 35.1 79.4 43 22.2 4
900 28.7 120 82.6 35.1 66.4 38 22.2 4
150 11.2 90 60.3 35.1 47.6 30 15.9 4
1500 28.7 120 82.6 35.1 66.4 38 22.2 4
We provide MTC with all delivery of nickel C276 threaded flange, connect with us to know more about weight chart

C276 weld flanges weight chart


C276 weld flanges class 150 (weight kg)
NPS Blind  Socket Weld  Weld Neck  Slip On 
1 2 2 3 2
1½  4 3 4 3
3 3 3 3
2 5 5 6 5
3 9 9 11.5 9
2½  7 8 10 8
3½  13 11 12 11
5 20 15 21 15
¾ 2 2 2 2
4 17 13 16.5 13
6 27 19 26 19
12 123 64 88 64
8 47 30 42 30
½  2 2 2 1
10 70 43 54 43
14 140 90 114 90
16 180 98 140 106
18 220 130 165 130
20 285 165 197 165
24 430 220 268 220
22 355 185 225 185
Finding hastelloy b2 flanges supplier in Mumbai ? browse with us to get ASME SB564 hastelloy forged flange chemical and mechanical properties

Chemical composition of nickel C276 threaded flange


C Tungsten Mn Cu V Ni Mo Iron Si Cobalt Cr
≤0.01 4 ≤1 ≤0.5 ≤0.35 Balance 16 5 ≤0.08 ≤2.5 16

C276 hastelloy reducing flange mechanical properties


Element Yield Strength (0.2%Offset) Tensile Strength Melting Point Elongation Density
Hastelloy C276 Flanges Psi – 52,000 , MPa – 355 Psi – 1,15,000 , MPa – 790 1370 °C (2500 °F) 40 % 8.89 g/cm3

Equivalent properties of Hastelloy alloy pipe flange


Standard WNR. AFNOR UNS JIS EN OR
Hastelloy C276 Flanges 2.4819 - N10276 NW 0276 NiMo16Cr15W ЭП760

ASME SB564 hastelloy slip on forged ring applications


  • Heat Exchangers
  • Pulp and Paper Industry
  • Specialty Chemicals
  • Gas Processing
  • Pharmaceutical Equipment
  • Sea Water Equipment
  • Petrochemicals
  • Off-Shore Oil Drilling Companies
  • Power Generation
  • Condensers
  • Pharmaceuticals
  • Chemical Equipment