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ASTM A350 LF2 Flanges

Check Price list of SA350 LF2 CL1 Flange & A350 LF2 Flange Dimensions

SA350 LF2 CL1 Flange belongs to a specification of flanges that are made up of different low carbon steel alloys. These are either ring rolled or forged. The A350 LF2 Material 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 A350 LF2 Flange Dimensions vary according to the standards. These flanges usually range from ½ inches to 24 inches in diameter.

ASTM A350 LF2 Flanges

Top notch Manufacturer of A350 LF2 Material & ASTM A350 LF2 class 1 Flange

The A350 LF2 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.

 

ASTM A350 Lf2 Flanges Material Specification

Specifications ASTM A350 / ASME SA350
Dimensions BS4504, BS 10, ANSI/ASME B16.5, EN-1092, B 16.47 Series A & B, DIN, B16.48,
Manufacturing Types Ring Type Joint (RTJ), Small Tongue, Flat Face (FF), Groove,Large Tongue & Groove, Large Male-Female (LMF), Small Male-Female (SMF), Lap-Joint Face (LJF), Raised Face (RF)
Class/Pressure 300#, 600#, 150#, 2500#, 900#, 1500#, PN10, PN16, PN40, PN64, PN6, PN25,

 

ASME A350 LF2 Flanges Chemical Chart

C%
Mn%
Si%
S%
P%
Cr%
Ni%
0.30 max
0.6/1.35
.15/.30
.040 max
.035 max
0.30 max
0.40 max

 

Mechanical Behaviour of A350 LF2 cl1 Flange

PROPERTIES
Imperial
TS Min psi (Mpa)
70,000 (485)
YS Min psi (Mpa)
36,000 (250)
EL (2″ Min)
22%
RA Min
30%
Hardness, Bhn
Max 197
-50ºF Charpy
Min Impact
Energy F t/Lb (J):-
Set of 3 Specimen*
15 (20)
For One Specimen
12 (16)

 

Carbon Steel A350 LF2 Flanges Pressure Ratings

TEMP °C 300 150 400 2500 900 600 1500
-29 TO 38 51.1 19.6 68.1 425.5 153.2 102.1 255.3
50 50.1 19.2 66.8 417.7 150.4 100.2 250.6
200 43.8 13.8 58.4 365 131.4 87.6 219
100 46.6 17.7 62.1 388.3 139.8 93.2 233
150 45.1 15.8 60.1 375.6 135.2 90.2 225.4
250 41.9 12.1 55.9 349.5 125.8 83.9 209.7
325 38.7 9.3 51.6 322.6 116.1 77.4 193.6
350 37.6 8.4 50.1 313 112.7 75.1 187.8
300 39.8 10.2 53.1 331.8 119.5 79.6 199.1
375 36.4 7.4 48.5 303.1 109.1 72.7 181.8
500 11.8 2.8 15.7 97.9 35.3 23.5 58.8
538 5.9 1.4 7.9 49.2 17.7 11.8 29.5
400 34.7 6.5 46.3 289.3 104.2 69.4 173.6
425 28.8 5.5 38.4 239.7 86.3 57.5 143.8
450 23 4.6 30.7 191.7 69 46 115
475 17.4 3.7 23.2 145.3 52.3 34.9 87.2

 

A350 LF2 Carbon Steel Flanges Weight Chart

Standards
Class
Dia
Diameter of Bolt Circle
Number of Bolts
Size of Bolt
Bolt Hole Diameter
AS 2129 Flange
Table C
95
67
4
13
14
Table D
95
67
4
13
14
Table E
95
67
4
13
14
Table F
95
67
4
13
14
Table H
114
83
4
16
17
Table J
114
83
4
16
17
AS4087
PN14
95
67
4
M12
14
ASTM B16.5 Flange
Class 150
89
60
4
13
16
Class 1500
121
83
4
19
22
Class 600
95
67
4
13
16
Class 900
121
83
4
19
22
Class 300
95
67
4
13
16
ISO 7005 Flange
PN6
80
55
4
M10
11
PN40
95
65
4
M12
14
PN16
95
65
4
M12
14
PN25
95
65
4
M12
14
PN10
95
65
4
M12
14
PN20
90
60.5
4
M14
16

Difference between a350 lf2 class 1 and class 2 flange

The a350 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.