ASTM A350 LF2 Flanges Manufacturers In India

ASTM A350 LF2 Flanges

Check ASTM A350 LF2 Flanges Temperature Range, Carbon Steel A350 LF2 CL1 Flanges Chemical Composition.

ASTM A350 LF2 Flanges belongs to a specification of flanges that are made up of different low carbon steel alloys. These are either ring rolled or forged. The Carbon Steel A350 LF2 CL1 Flanges is usually supplied in normalized, quench, normalized and tempered or tempered conditions. The applications of these flanges vary throughout the oil and gas industries, the chemical industries and in fabrication industries. The flanges are intended for the low temperature services. The Ltcs A350 LF2 Blind Flange Dimensions vary according to the standards. These flanges usually range from ½ inches to 24 inches in diameter.




A350 LF2 Flanges Temperature Table

( Carbon Steel ASTM A350 LF2 Flanges)
Temperature (F°)150 Class300 Class400 Class600 Class900 Class1500 Class2500 Class
-20 to 1002857409851480222037056170
2002606809051360203533955655
3002306558701310196532705450
4002006358451265190031705280
5001706058051205181030155025
6001405707551135170528404730
6501255507301100165027454575
7001105307101060159026554425
750955056751015152025354230
80080410550825123520553430
8506532042564095515952655
9005023030546069011501915
950351351852754106851145
10002085115170255430715

ASTM A350 LF2 Flanges

ASTM A350 LF2 Flanges


Chemical Compatibility Of A350 LF2 CL1 Flanges And SA350 LF2 Flanges Mechanical Behavior

A350 Lf2 Chemical Properties A350 Lf2 Mechanical Properties
C 0.30 Maximum TS Min psi (Mpa) 70,000 (485)
Mn 0.60 – 1.35 YS Min psi (Mpa) 36,000 (250)
Si 0.15 – 0.30 EL (2″ Min) 22%
P 0.035 Maximum RA Min 30%
S 0.040 Maximum Hardness, Bhn Maximum 197
Cr 0.30 Maximum -50ºF Charpy Min Impact
Ni 0.40 Maximum Energy F t/Lb (J):-
Mo 0.12 Maximum Set of 3 Specimen* 15 (20)
V 0.08 Maximum For One Specimen 12 (16)
Cb 0.02 Maximum
Cu 0.04 Maximum
Pb 0.02 Maximum
Total Residuals = 0.50

Refer Ltcs A350 LF2 Blind Flange Equivalent Material, Specification Chart Of ASME B16.5 A350 LF2 Welding Neck Flange, Wn Flange LF2 Mechanical Properties.



LTCS A350 LF2 Blind Flange Equivalent

Group Of Material Common Name Material Type UNS Forging Spec. Casting Spec. Equivalent DIN DIN W. No Application
Carbon Steel CS C-Si K03504 A105 A216-WCB C22.8 DIN 17243 1.0460 General non-corrosive service from -29ºC (-20ºF) to 425ºC (800ºF)
LTCS LTCS C-Mn-Fe K03011 A350-LF2 A352-LCB A352-LCC TSTE 355 DIN 18103 1.0566 General non-corrosive service from -46ºC (-50ºF) to 340ºC (650ºF), LF2 -46ºC ~ 425ºC
Low Alloy Steel Nickel Steel 3.1/2Ni K32025 A350-LF3 A352-LC3 10Ni14 1.5637 -101ºC (150ºF) to 340ºC (650ºF)

A350 LF2 Welding Neck Flange Material Specification

Specification ASTM A350 LF2 Flanges
Material ASTM A240, ASME SA240, ASTM A182, ASME SA182
Production Technique Machined, Forged, Heat Treated
Test X-ray detector, Direct-reading Spectrograph, UI trasonic flaw detector, Magnetic particle detector, Hydrostatic testing machine,
Origin West Europe / Japan / Indian / USA / Korean
Equipments Sand-Blasting Machine, Press Machine, Electric Bevelling Machine, Bending Machine, Pushing Machine, etc.
ANSI ANSI B16.47, MSS SP44, ANSI B16.48, ANSI B16.36, ANSI B16.5
BS BS4504 , BS4504, BS1560, BS10
JIS 16K 40K, 5K, 20K, 30K, 10K, 63K
DIN DIN2637, DIN2638, DIN2641, DIN2642, DIN2655, DIN2527, DIN2573, DIN2576, DIN2633, DIN2634, DIN2635, DIN2627, DIN2628, DIN2636, DIN2566, DIN2656, DIN2629, DIN 2631, DIN2632, DIN2673
Dimensions ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, AWWA, and Custom Drawings Flanges
Size 1/2" (15 NB) to 48" (1200NB) DN10~DN5000
Pressure Rate 300 LBS, 150 LBS, 1500 LBS, 2500 LBS, 600 LBS, 900 LBS
Facing Types Ring Type Joint (RTJ), Raised Face (RF), Flat Face (FF), Large Tongue & Groove, Small Tongue, Lap-Joint Face (LJF), Large Male-Female (LMF), Small Male-Female (SMF), Groove
Value Added Services Zinc Blindd, Antirust Paint, Oil Black Paint, Yellow Transparent, Cold and Hot Dip Galvanized

What is ASTM A350 LF2 Flanges?

The ASME B16.5 A350 LF2 Welding Neck Flange Rating gives an idea of the pressure containment capacities of the flanges. There are different classes in each category and they all have different pressure capacities and diameters. The ASME B16.34 standard governs the maximum allowed pressure for the flanges. Rajveer Stainless And Alloys is a manufacturer of flanges in this range. We supply any quantity of flanges according to the customer needs. The Carbon Steel A350 LF2 Flanges are primarily used in oil and gas, natural gas, petrochemical and petroleum refineries under low temperature conditions. The A350 LF2 Class 1 Flange has the ANSI pressure rating of 75.1 and is the most common class in this range. Please contact us for further technical information and product requirement.


Looking to buy SA350 LF2 Flanges Manufacturers In India? Contact Rajveer Stainless And Alloy, A Reliable A350 Lf2 Class 1 Material Supplier In Mumbai, Buy Sa350 Lf2 Steel Threaded Flanges Certified & Tested.


Types Of ASTM Carbon Steel A350 LF2 Flanges

6 Inch, Class 300, ANSI B16.5, ASTM A350 Lf2 Slip-on Flange

6 Inch, Class 300, ANSI B16.5, ASTM A350 Lf2 Slip-on Flanges

8 Inch, 300Lb, EN 1092-1, DN200, PN16, Lf2 Forged Steel Slip On Flange

8 Inch, 300Lb, EN 1092-1, DN200, PN16, Lf2 Forged Steel Slip On Flanges

8 Inch, Sch 40, 150 LB, ASTM A350 Lf2 Slip On Flange

8 Inch, Sch 40, 150 LB, ASTM A350 Lf2 Slip On Flanges

12 Inch, Sch 80, RF, Class 150, ASTM A350 Lf2 Slip-on Flange

12 Inch, Sch 80, RF, Class 150, ASTM A350 Lf2 Slip-on Flanges

10 Inch, CL300, SCH STD, ASME B16.5, A350 Lf2 WN Flange

10 Inch, CL300, SCH STD, ASME B16.5, A350 Lf2 WN Flanges

30 Inch, 150LB, Raised Face, ASTM A350 Lf2 Weld Neck Flange

30 Inch, 150LB, Raised Face, ASTM A350 Lf2 Weld Neck Flanges

12 Inch, SCH 40, 150 LB RF, ASTM A350 Lf2 Class 1 Weld Neck Flange

12 Inch, SCH 40, 150 LB RF, ASTM A350 Lf2 Class 1 Weld Neck Flanges

30 Inch, Class 600 LB, RF, A350 Lf2 CL 2 Weld Neck Flange

30 Inch, Class 600 LB, RF, A350 Lf2 CL 2 Weld Neck Flanges

3 Inch, Class 300, SCH 40, Raised Face, CS A350 Lf2 Orifice Flange

3 Inch, Class 300, SCH 40, Raised Face, CS A350 Lf2 Orifice Flanges

3 Inch, 300 LB, SCH 80, ASTM A350 Lf2 Orifice Flange

3 Inch, 300 LB, SCH 80, ASTM A350 Lf2 Orifice Flanges

3 Inch, 300 LB, RF, ANSI B16.36, A350 Lf2 WN Orifice Flange

3 Inch, 300 LB, RF, ANSI B16.36, A350 Lf2 WN Orifice Flanges

2 Inch, 300#, SCH 80, Lf2 Black Weld Neck Orifice Flange

2 Inch, 300#, SCH 80, Lf2 Black Weld Neck Orifice Flanges

1/2 Inch, 150 LB, RF Carbon Steel A350 Lf2 Threaded Flange

1/2 Inch, 150 LB, RF Carbon Steel A350 Lf2 Threaded Flanges

1 Inch, SCH 40, Class 300, RF Ends, ASTM Lf2 Dipped Galvanized Thread Flanges

1 Inch, SCH 40, Class 300, RF Ends, ASTM Lf2 Dipped Galvanized Thread Flanges

2 1/2 Inch, 150#, FF, A350 Lf2 Class 2 Screw Thread Flanges

2 1/2 Inch, 150#, FF, A350 Lf2 Class 2 Screw Thread Flanges

2 Inch x NPTF 1-1/2 Inch, RF, Black A350 Lf2 Threaded Flange

2 Inch x NPTF 1-1/2 Inch, RF, Black A350 Lf2 Threaded Flanges

2 Inch, ANSI B16.48, CL1500, A350 LF2 CL1 Spectacle Blind Flange

2 Inch, ANSI B16.48, CL1500, A350 LF2 CL1 Spectacle Blind Flanges

DN 100, PN 50, ANSI B16.5, RF, ASTM A350 Blind Flange

DN 100, PN 50, ANSI B16.5, RF, ASTM A350 Blind Flanges

 12 Inch, Class 300, ASTM A350 Lf2 Spectacle Blind Flange

12 Inch, Class 300, ASTM A350 Lf2 Spectacle Blind Flanges

10 Inch, Class 600, ANSI B16.5, RF, Carbon Stel ASTM A350 Lf2 Blind Flange

10 Inch, Class 600, ANSI B16.5, RF, Carbon Stel ASTM A350 Lf2 Blind Flange


A350 LF2 Flanges Dimensions Chart

A350 LF2 Flanges Dimensions Chart

Wn Flange LF2 Physical Properties

Physical Properties Cast
Carbon Steel
Forged
0.30/0.35 C Maximum A216-WCB A105
0.25 C Maximum A216-WCC
LOW TEMPERATURE STEEL
0.25/0.30 C Maximum A352-LCB A350-LF2
0.5 Mo A352-LC1
2.5 Ni A352-LC2
3.5 Ni A352-LC3
C-MN-Si (0.25 Maximum) A352-LCC A350-LF3
C-MN-Si-V (1.15~1.50 Mn) A350-LF6

A350 LF2 Steel Flanges Schedule Chart

Size in Inch Size in millimeter O.D. Thick. Of Flange RF Dia. RF Height PCD No of Bolts Bolt Size UNC Machine Bolt Length RF Stud Length Hole Size ISO Stud Size Weight in kilogram
A B C D E
1/2 15 90 9.6 34.9 2 60.3 4 1/2 50 55 5/8 M14 0.9
3/4 20 100 11.2 42.9 2 69.9 4 1/2 50 65 5/8 M14 0.9
1 25 110 12.7 50.8 2 79.4 4 1/2 55 65 5/8 M14 0.9
1 1/4 32 115 14.3 63.5 2 88.9 4 1/2 55 70 5/8 M14 1.4
1 1/2 40 125 15.9 73 2 98.4 4 1/2 65 70 5/8 M14 1.8
2 50 150 17.5 92.1 2 120.7 4 5/8 70 85 3/4 M16 2.3
2 1/2 65 180 20.7 104.8 2 139.7 4 5/8 75 90 3/4 M16 3.2
3 80 190 22.3 127 2 152.4 4 5/8 75 90 3/4 M16 4.1
3 1/2 90 215 22.3 139.7 2 177.8 8 5/8 75 90 3/4 M16 5.9
4 100 230 22.3 157.2 2 190.5 8 5/8 75 90 3/4 M16 7.7
5 125 255 22.3 185.7 2 215.9 8 3/4 85 95 7/8 M20 9.1
6 150 280 23.9 215.9 2 241.3 8 3/4 85 100 7/8 M20 11.8
8 200 345 27 269.9 2 298.5 8 3/4 90 110 7/8 M20 20.5
10 250 405 28.6 323.8 2 362 12 7/8 100 115 1 M24 32
12 300 485 30.2 381 2 431.8 12 7/8 100 120 1 M24 50
14 350 535 33.4 412.8 2 476.3 12 1 115 135 1 1/8 M27 64
16 400 595 35 469.9 2 539.8 16 1 115 135 1 1/8 M27 82
18 450 635 38.1 533.4 2 577.9 16 1 1/8 125 145 1 1/4 M30 100
20 500 700 41.3 584.2 2 635 20 1 1/8 140 160 1 1/4 M30 130
24 600 815 46.1 692.2 2 749.3 20 1 1/4 150 170 1 3/8 M33 196


Size Chart Of A350 Gr Lf2 Square Flanges

Nominal Size Of Pipe
Normal Size Of Pipe
(inch)
Dia. of
Flange
(inch)
No.
of
Bolts
Dia. of
Bolts
(inch)
Dia. of
Bolt Holes
(inch)
Bolt
Circle
(inch)
1/4 3-3/8 4 1/2 0.62 2-1/4
1/2 3-1/2 4 1/2 0.62 2-3/8
3/4 3-7/8 4 1/2 0.62 2-3/4
1 4-1/4 4 1/2 0.62 3-1/8
1-1/4 4-5/8 4 1/2 0.62 3-1/2
1-1/2 5 4 1/2 0.62 3-7/8
2 6 4 5/8 0.75 4-3/4
2-1/2 7 4 5/8 0.75 5-1/2
3 7-1/2 4 5/8 0.75 6
3-1/2 8-1/2 8 5/8 0.75 7
4 9 8 5/8 0.75 7-1/2
5 10 8 3/4 0.88 8-1/2
6 11 8 3/4 0.88 9-1/2
8 13-1/2 8 3/4 0.88 11-3/4
10 16 12 7/8 1 14-1/4
12 19 12 7/8 1 17
14 21 12 1 1.12 18-3/4
16 23-1/2 16 1 1.12 21-1/4
18 25 16 1-1/8 1.25 22-3/4
20 27-1/2 20 1-1/8 1.25 25
24 32 20 1-1/4 1.38 29-1/2

Material Of A350 Gr Lf2 Class 2 SORF Flanges

Material Fittings Flanges
Carbon Steel A234 Gr WPA A105
A234 Gr WPB A105
Carbon Steel
Alloy
High-Temp
A234 Gr WP1 A182 Gr F1
A234 Gr WP11
A234 Gr WP12
A234 Gr WP22
A234 Gr WP5
A234 Gr WP9 A182 Gr F9
Carbon Steel
Alloy
Low-Temp
A420 Gr WPL6 A350 Gr LF2
A420 Gr WPL3

A350-Lf2-1 Forged Flanges Pressure Rating

ASTM A350 Lf2 Flanges Pressure Class
Size Of Pipe 150# 300# 600# 900# 1500# 2500#
Weld Neck SORF BLRF Weld Neck SORF BLRF Weld Neck SORF BLRF Weld Neck SORF BLRF Weld Neck SORF BLRF Weld Neck SORF BLRF
1/2" 2 1 1 2 1 1 2 2 2 1500# Schedule 5 4 4 7 7 7
3/4" 2 2 2 3 3 3 4 3 3 1500# Schedule 6 5 6 8 8 8
1" 3 2 2 4 3 3 4 4 4 1500# Schedule 9 8 8 12 11 11
1 1/2" 4 3 3 7 6 6 8 7 8 1500# Schedule 13 12 13 25 22 23
2" 6 5 5 9 7 8 12 9 10 1500# Schedule 25 25 25 42 37 39
2 1/2" 8 7 7 12 10 12 18 13 15 1500# Schedule 36 36 35 52 55 56
3" 10 8 9 15 13 16 23 16 20 31 26 29 48 48 48 94 83 86
4" 15 13 17 25 22 27 42 37 41 53 53 54 73 73 73 145 125 130
5" 19 15 20 32 28 35 68 63 68 86 83 87 130 130 140 245 210 225
6" 24 19 26 42 39 50 81 80 86 110 110 115 165 165 160 380 325 345
8" 39 30 45 67 58 81 120 115 140 175 170 200 275 260 300 580 485 530
10" 52 43 70 91 81 124 190 170 230 260 245 290 455 435 510 1075 930 1025
12" 80 64 110 140 115 185 225 200 295 325 325 415 690 580 690 1525 1100 1300
14" 110 90 140 180 165 250 280 230 355 400 400 520 940 NA 975 NA NA NA
16" 140 98 180 250 190 295 390 330 495 495 425 600 1250 NA 1300 NA NA NA
18" 150 130 220 320 250 395 475 400 630 680 600 850 1625 NA 1750 NA NA NA
20" 180 165 285 400 315 505 590 510 810 830 730 1075 2050 NA 2225 NA NA NA
22" 225 185 355 465 370 640 720 590 1000 NA NA NA NA NA NA NA NA NA
24" 260 220 430 580 475 790 830 730 1250 1500 1400 2025 3325 NA 3625 NA NA NA


Material ASTM A350 Gr Lf2 Square Flanges Delivering Everywhere In India, Manufacting High-Class Fully Killed Gr Lf2 Cl1 Flat Flanges, Carbon Steel A350 Lf2 High Hub Flanges Available In A Wide Range Of Grades And Shapes.

Thickness Of A350 Lf2 Killed CS Flanges

Normal Size Of Pipe OD Sch 10 Sch 20 Sch 30 STD Wall Sch 40 Sch 60 EXT Hvy Sch 80 Sch 100 Sch 120 Sch 140 Sch 160 XX Hvy
½ 0.84 0.083 0.109 0.109 0.147 0.147 0.188 0.294
¾ 1.05 0.083 0.113 0.113 0.154 0.154 0.219 0.308
1 1.315 0.109 0.133 0.133 0.179 0.179 0.25 0.358
1 ¼ 1.66 0.109 0.14 0.14 0.191 0.191 0.25 0.382
1 ½ 1.9 0.109 0.145 0.145 0.2 0.2 0.281 0.4
2 2.375 0.109 0.154 0.154 0.218 0.218 0.344 0.436
2 ½ 2.875 0.12 0.203 0.203 0.276 0.276 0.375 0.552
3 3.5 0.12 0.216 0.216 0.3 0.3 0.438 0.6
3 ½ 4 0.12 0.226 0.226 0.318 0.318 0.636
4 4.5 0.12 0.237 0.237 0.337 0.337 0.438 0.531 0.674
5 5.563 0.134 0.258 0.258 0.375 0.375 0.5 0.625 0.75
6 6.625 0.134 0.28 0.28 0.432 0.432 0.562 0.719 0.864
8 8.625 0.148 0.25 0.277 0.322 0.322 0.406 0.5 0.5 0.594 0.719 0.812 0.906 0.875
10 10.75 0.165 0.25 0.307 0.365 0.365 0.5 0.5 0.594 0.719 0.844 1 1.125 1
12 12.75 0.18 0.25 0.33 0.375 0.406 0.562 0.5 0.688 0.844 1 1.125 1.312 1
14 14 0.25 0.312 0.375 0.375 0.438 0.594 0.5 0.75 0.938 1.094 1.25 1.406
16 16 0.25 0.312 0.375 0.375 0.5 0.656 0.5 0.844 1.031 1.219 1.438 1.594
18 18 0.25 0.312 0.438 0.375 0.562 0.75 0.5 0.938 1.156 1.375 1.562 1.781
20 20 0.25 0.375 0.5 0.375 0.594 0.812 0.5 1.031 1.281 1.5 1.75 1.969
22 22 0.25 0.375 0.5
24 24 0.25 0.375 0.562 0.375 0.688 0.969 0.5 1.219 1.531 1.812 2.062 2.344
26 26 0.375 0.5
30 30 0.312 0.5 0.625 0.375 0.5
36 36 0.312 0.5 0.625 0.375 0.75 0.5
40 40 0.375 0.5
42 42 0.375 0.5
48 48 …….. …….. …….. 0.375 …….. …….. 0.5 …….. …….. …….. …….. …….. ……..


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LTCS A350 Lf2 Type

Steel Type Grade (forging) Grade (cast) Composition Min Temperature
Austenitic A182, F316 A351 CF8M 18Cr, 8Ni, 2Mo -196ºC
Nickel Based Steel A350 LF3 A352 LC3 3 1/2Ni -101ºC
Nickel Based Steel NO EQUIV A352 LC2 2 1/2Ni -73ºC
Low Temp Carbon Steel NO EQUIV A352 LC1 0.5Mo -59ºC
Low Temp Carbon Steel A350 LF2 A352 LCB Carbon Steel -46ºC

A350 LF2 Flanges Tensile Properties

A350 LF1 and A350 LF5 Class 1 LF2 Classes 1 and A350 Class 2 LF3 Classes 1 and LF 5 Class 2 LF 6 LF 9 LF 787
Class 1 Class Class 2 Class 3
Tensile strength, ksi [MPa] 60-85 [415- 585] 70-95 [485- 655] 70-95 [485- 655] 66-91 [455-630] 75-100 [515-690] 63-88 [435- 605] 65-85 [450-585] 75-95 [515-655]
Yield strength, min, ksi [MPa]B,C Elongation: 30 [205] 36 [250] 37.5 [260] 52 [360] 60 [415] 46 [315] 55 [380] 65 [450]
Standard round specimen, or small proportional specimen, min % in 25 22 22 22 20 25 20 20
4D gage length Strip specimen to wall thickness 5⁄16 in. (7.94 mm) and over and for all small sizes tested in full section; min % in 2 in. (50 mm) 28 30 30 30 28 28 28 28
Equation for calculating min elongation for strip specimens thinner than 5⁄16 in. (7.94 mm); min % in 2 in. (50 mm) t p actual thickness in inches 48t+13 48t+15 48t+15 48t+15 48t+13 48t+13 48t+13 48t+13
Reduction of area, min, % 38 30 35 40 40 38 45 45

ASME A350 LF2 CL2 Flanges Thermal Expansion

Properties Metric Imperial
Thermal expansion co-efficient (@0-100°C/32-212°F) 10.4 µm/m°C 5.78 µin/in°F
Thermal conductivity 21.6 W/mK 150 BTU in/hr.ft².°F

Difference Between A350 lf2 Class 1 And Class 2 Flange

The SA350 LF2 Flanges are in the range of ½ inches to 48 inches in nominal diameter. There are different pressure classes ranging from 150 to 2500. The class 1 and 2 flanges can have pressures from 6bars to 40 bars and can come in different finishes such as oil black paint, zinc plated and hot dip galvanized. The difference is that the class 2 flanges have slightly higher mechanical properties. The class 1 flanges are the most commonly used where the class 2 flanges are used in specific applications. They both can be made as forged, threaded or screwed.