What is ASTM A350 LF2 Flanges?
The ASTM A350 LF2 Flanges are known for their moderate strength and impact toughness. The ASTM A350 specification with grade LF2 are widely used for manufacturing different types of flanges and fittings. These are primarily used in cold temperature applications, where resistance to corrosion is not an essential aspect. There are different types of ASTM A350 LF2 Flanges available; each have varied structure and applications, like:
All the above and several other flanges are used across several industries due to the benefits offered by the ASTM A350 LF2 material. These flanges are popular due to all the features that it has including high durability, precise construction, high tensile strength, flawless finish, and superior performance. They are primarily intended to be used in very low temperature applications,
A350 Gr LF2 Weld Neck Flange Vs Sa350 LF2 Blind Flange
The A350 Gr LF2 Weld Neck Flange is mostly used in applications where the situation is severe and critical. They can withstand high-pressure and also a wide range of fluctuations in both temperature and pressure. These flanges are used in the piping connection that might carry volatile and hazardous fluids, and their temperature might be in the sub-zero range.
On the other hand, the Sa350 LF2 Blind Flange is primarily used for sealing the ends of a piping system or the nozzle of a pressure vessel opening. It is either installed in that part of the system which is not in use, or used for testing the flow of liquid or gas through the pipe. They help the engineers to get easy access to the pipe for maintenance and repair, by sealing the flow.
A350 LF2 Class 1 And Class 2 Difference
The main characteristic that differentiates A350 LF2 Class 1 And Class 2 is their minimum application temperature. For A350 LF2 Class 1, the minimum application temperature is -46 degrees C, whereas it is -18 degrees C for Class 2.
A350 LF3 Flanges Vs SA350 LF2 Flanges
The A350 LF3 and the SA 350 LF2 materials are both used in the manufacturing of forged flanges. They have a slightly different chemical composition and thus, their properties are also quite different from one another.
Heat treatment on both the grades would be done continuously, post the welding process. Also, they are machined as per the requirements. The on-going condition would help determine if the machining would be done on forged, normalized, or annealed structure.
ASTM A350 LF2 Flanges
Table of Content
Size Range | 1/2″ to 48″ |
---|---|
Chart of Pressure Rating | 300 LBS, 2500 LBS, 1500 LBS, 900 LBS, 150 LBS, 600 LBS |
JIS | 40 K, 16 K, 5K, 10 K, 30 K, 20 K, 63 K |
DIN Pressure Calculation | 25Bar 40Bar 16Bar 6Bar 10Bar / PN64 PN10 PN25 PN16 PN6 PN40 |
Manufacturer of Connect / Flange Face Type | LJF, RF, RTJ, FF, Small Tongue, Large Tongue & Groove |
Test | Magnetic particle detector, X-ray detector, Ultrasonic flaw detector, Direct-reading Spectrograph, Hydrostatic testing machine |
Origin | Japan / West Europe / Indian / USA / Korean |
Manufacturer of | GOST, JIS, ANSI, DIN, UNI, BS, AWWA, AS2129, SABS, NFE, EN etc. |
UNI / EN | 16Bar 6Bar 40Bar 10Bar 25Bar |
Standards Provided By Manufacturer | ISO70051, MSS S44, BS1560-3.1, API7S-43, B16.48, ANSI/ASME B16.5, B16.47 Series A & B, BS4504, JISB2220, ASME/ANSI B16.5/16.36/16.47A/16.47B, API605, BS 10, EN-1092, DIN, API7S-15, EN1092 |
Common Types By Manufacturer | Threaded / Screwed / Forged / Plate |
Equipment | Pushing Machine, Press machine, Sand-blasting machine, Bending machine, electric bevelling machine etc |
Production technique Used By Manufacturer | Heat treated, Forged and machined |
Coating | Zinc Plated, Anti-rust Paint, Yellow Transparent, Oil Black Paint, Cold and Hot Dip Galvanized |
Biggest Flange LF2 and Material A350 importer, stockists, supplier, dealers, stockholders, wholesalers, distributor, exporters and Manufacturer in Mumbai
Nominal Pipe Size | Flanges Inside Diameter (ID) (inch) |
Flanges Outside Diameter (OD)
(inches) |
||||
Class 150 | Class 300 | Class 400 | Class 600 | Class 900 | ||
1/2 | 0.84 | 1.875 | 2.125 | 2.125 | 2.125 | 2.50 |
3/4 | 1.06 | 2.25 | 2.625 | 2.625 | 2.625 | 2.75 |
1 | 1.31 | 2.625 | 2.875 | 2.875 | 2.875 | 3.125 |
1 1/4 | 1.66 | 3 | 3.25 | 3.25 | 3.25 | 3.50 |
1 1/2 | 1.91 | 3.375 | 3.75 | 3.75 | 3.75 | 3.875 |
2 | 2.38 | 4.125 | 4.375 | 4.375 | 4.375 | 5.625 |
2 1/2 | 2.88 | 4.875 | 5.125 | 5.125 | 5.125 | 6.50 |
3 | 3.50 | 5.375 | 5.875 | 5.875 | 5.875 | 6.625 |
4 | 4.50 | 6.875 | 7.125 | 7.00 | 7.625 | 8.125 |
5 | 5.56 | 7.75 | 8.50 | 8.375 | 9.50 | 9.75 |
6 | 6.62 | 8.75 | 9.875 | 9.75 | 10.50 | 11.375 |
8 | 8.62 | 11 | 12.125 | 12.00 | 12.625 | 14.125 |
10 | 10.75 | 13.375 | 14.25 | 14.125 | 15.75 | 17.125 |
12 | 12.75 | 16.125 | 16.625 | 16.50 | 18.00 | 19.625 |
Yield Strength | 36,000 psi |
TEMP °C |
150 | 300 | 400 | 600 | 900 | 1500 | 2500 |
-29 TO 38 | 19.6 | 51.1 | 68.1 | 102.1 | 153.2 | 255.3 | 425.5 |
50 | 19.2 | 50.1 | 66.8 | 100.2 | 150.4 | 250.6 | 417.7 |
100 | 17.7 | 46.6 | 62.1 | 93.2 | 139.8 | 233 | 388.3 |
150 | 15.8 | 45.1 | 60.1 | 90.2 | 135.2 | 225.4 | 375.6 |
200 | 13.8 | 43.8 | 58.4 | 87.6 | 131.4 | 219 | 365 |
250 | 12.1 | 41.9 | 55.9 | 83.9 | 125.8 | 209.7 | 349.5 |
300 | 10.2 | 39.8 | 53.1 | 79.6 | 119.5 | 199.1 | 331.8 |
325 | 9.3 | 38.7 | 51.6 | 77.4 | 116.1 | 193.6 | 322.6 |
350 | 8.4 | 37.6 | 50.1 | 75.1 | 112.7 | 187.8 | 313 |
375 | 7.4 | 36.4 | 48.5 | 72.7 | 109.1 | 181.8 | 303.1 |
400 | 6.5 | 34.7 | 46.3 | 69.4 | 104.2 | 173.6 | 289.3 |
425 | 5.5 | 28.8 | 38.4 | 57.5 | 86.3 | 143.8 | 239.7 |
450 | 4.6 | 23 | 30.7 | 46 | 69 | 115 | 191.7 |
475 | 3.7 | 17.4 | 23.2 | 34.9 | 52.3 | 87.2 | 145.3 |
500 | 2.8 | 11.8 | 15.7 | 23.5 | 35.3 | 58.8 | 97.9 |
538 | 1.4 | 5.9 | 7.9 | 11.8 | 17.7 | 29.5 | 49.2 |
ASTM A350 LF2 Class 1 Flanges Price Per Piece in India | Price Applicable for jan 2022 to june 2022 | Price Applicable for July 2022 to December 2022 |
FLANGE 3/4 300 SCH 160 WNRF A350 LF2 ASME B16.5 Per Kg | US $20.14 | US $22.14 |
BLRF FLANGES TO ASTM A350 LF2, DIMN. B 16.5 -SIZE: 3/4 X 300# Per Kg | US $3.58 | US $5.58 |
WNRF FLANGES TO LTCS, DIMN. B 16.5 -SIZE: 3 X 300# S40 Per Piece | US $20.73 | US $22.73 |
We are a specialist Distributor & Stockist of SA 350 LF2 Class 1 Puddle Flange and LTCS Flange. Compare our rates with other SA 350 Gr LF2 Blind Flange Suppliers and Manufacturers in India. Buy SA 350 Gr LF2 Lap Joint Flange and ASTM A350 LF2 Class 1 Loose flange at competitive rate directly from Manufacturer
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 |
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) |
Group Of Material | Common Name Of Material | Type Of Material | UNS | Forging Spec. | DIN |
---|---|---|---|---|---|
Low Temperature Carbon Steel (LTCS) | LTCS | C-Mn-Fe | K03011 | A350-LF2 | TSTE 355 DIN 18103 |
Temperature Range | 200° Celsius (400°F) |
Temp. | Sbasic | Temp. | Sbasic |
---|---|---|---|
-50~100 | 23.3 | 700 | 17.2 |
200 | 22.0 | 750 | 14.8 |
300 | 21.2 | 800 | 12.0 |
400 | 20.5 | 850 | 9.3 |
500 | 19.6 | 900 | 6.7 |
600 | 18.4 | 950 | 4.0 |
650 | 17.8 | 1000 | 2.5 |
Hardness | 197 HB |
Grade | Test Temperature, ℉ [℃] |
---|---|
LF2 Class 1 | -50 [-46] |
LF2 Class 2 | -0 [-18] |
Grade & Class | Eav min. ft*lbf [J] |
Eeamin. ft*lbf [J] |
---|---|---|
LF2 Class 1 | 15 [20] | 12 [16] |
LF2 Class 2 | 20 [27] | 15 [20] |
5000 NB SA 350 LF2 Class 1 Threaded Flange
LF2 Carbon Steel Long Weld Neck Flange
A350 LF2 Cl1 Loose Plate Flanges
A350 Gr LF2 Cl1 Lapped Joint Flange
Flange LF2
SA 350 LF2 Plate Flanges
LF2 Steel Screwed Flange
LF2 Flanges
ASTM A350 Weld Neck Flanges
150 LBS SA350 Gr LF2 Ring Joint Flange
LF2 Cl1 Socket Weld Flange
LTCS Flanges
SA 350 Material
15 NB A350 LF2 Puddle Flange
SA 350 Gr LF2 Cl1 Raised Face Flange
SA 350 LF2 Cl1 Orifice Flanges
A350 LF2 Class 1 Reducing Flanges
ASTM A350 LF2 Cl1 Forged Flange
1500 LBS Sa350 LF2 Cl1 BLRF Flanges
A350 Gr LF2 Material
A350 LF2 Cl1 Material
SA 350 Gr LF2 Blind Flange
ASTM A350 LF2 Class 1 Slip On Flange
A350 Gr LF2 Girth Flanges
A350 LF3 Nipoflange
SA350 Gr LF2 CL1 Spectacle Blind Flange
A350 Flange
A 350 Gr LF2 Expander Flanges
Astm LF2 Flange
ASTM A350 Gr LF2 SORF Flanges
ASTM A350 LF2 Material
600 LBS ASME SA 350 LF2 Class 1 Tongue & Groove Flange
900 LBS ASTM A350 LF2 Welding neck flange
300 LBS A350 LF2 Steel WNRF Flange
LF2 Material
2500 LBS LF2 Class 1 SWRF Flanges
Forgings fabricated in accordance with ASTM A350/ ASME SA350 must undergo a hydrostatic test suitable with the finished item's rating. Only when Supplementary Requirement S57 of Specification A961/A961M is stated, shall such testing be performed by the manufacturer.
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 |
For this material, the forging temperature should be between 900 and 1200oC. To avoid excessive scaling, soak times should be maintained to a minimum, but enough time should be allowed for the centre to reach furnace temperature. Pieces should be allowed to cool in steady air after forging.
ASTM A350 LF2 offers good to very good machinability, depending on condition, and operations like sawing, turning, broaching, milling, and so on can be completed satisfactorily using normal machine tool manufacturer recommended speeds and feeds.
LTCS Flanges is wrapped in plastic cloth and packed in a wooden box, a wooden pallet, and a fumigated wooden carrate. Our packaging is fully waterproof and transportable, with proper strips on a wooden box with a lifting point.
Size in Inch | Size in mm | ISO Stud Size | RF Height | Outer Dia. | RF Dia. | Hole Size | PCD | No of Bolts | Bolt Size UNC | Flange Thickness | RF Stud Length | Weight in kg |
D | A | C | E | B | ||||||||
1/2 | 15 | M20 | 7 | 135 | 34.9 | 7/8 | 88.9 | 4 | 3/4 | 30.2 | 120 | 3.2 |
3/4 | 20 | M20 | 7 | 140 | 42.9 | 7/8 | 95.2 | 4 | 3/4 | 31.8 | 125 | 3.7 |
1 | 25 | M24 | 7 | 160 | 50.8 | 1 | 108 | 4 | 7/8 | 35 | 140 | 5 |
1 1/4 | 32 | M27 | 7 | 185 | 63.5 | 1 1/8 | 130.2 | 4 | 1 | 38.1 | 150 | 7.8 |
1 1/2 | 40 | M30 | 7 | 205 | 73 | 1 1/4 | 146 | 4 | 1 1/8 | 44.5 | 170 | 10.5 |
2 | 50 | M27 | 7 | 235 | 92.1 | 1 1/8 | 171.4 | 8 | 1 | 50.9 | 180 | 18 |
2 1/2 | 65 | M30 | 7 | 265 | 104.8 | 1 1/4 | 196.8 | 8 | 1 1/8 | 57.2 | 195 | 25.5 |
3 | 80 | M33 | 7 | 305 | 127 | 1 3/8 | 228.6 | 8 | 1 1/4 | 66.7 | 220 | 39 |
4 | 100 | M39 | 7 | 355 | 157.2 | 1 5/8 | 273 | 8 | 1 1/2 | 76.2 | 255 | 61.5 |
5 | 125 | M45 | 7 | 420 | 185.7 | 1 7/8 | 323.8 | 8 | 1 3/4 | 92.1 | 300 | 102 |
6 | 150 | M52 | 7 | 485 | 215.9 | 2 1/8 | 368.3 | 8 | 2 | 108 | 345 | 157 |
8 | 200 | M52 | 7 | 550 | 269.9 | 2 1/8 | 438.2 | 12 | 2 | 127 | 380 | 241 |
10 | 250 | M64 | 7 | 675 | 323.8 | 2 5/8 | 539.8 | 12 | 2 1/2 | 165.1 | 490 | 470 |
12 | 300 | M72 | 7 | 760 | 381 | 2 7/8 | 619.1 | 12 | 2 3/4 | 184.2 | 540 | 575 |
Flange NPS | H | Inside Diameter |
Flat Face Thickness (T2) |
Outside Diameter |
Raised Face (RF) |
Raised Face (R) |
H1 | Raised Face Thickness (T) |
T1 | Bolt Circle (BC) |
Bolt Hole (B) |
No. of Bolt Holes |
---|---|---|---|---|---|---|---|---|---|---|---|---|
1/2" | 1.19" | 0.62" | 1.82" | 3.50" | .063" | 1.38" | 0.84" | 1.88" | .38" | 2.38" | .62" | 4 |
1-1/4" | 2.31" | 1.38" | 2.19" | 4.62" | .063" | 2.50" | 1.66" | 2.25" | .56" | 3.50" | .62" | 4 |
3/4" | 1.50" | 0.82" | 2.00" | 3.88" | .063" | 1.69" | 1.05" | 2.06" | .44" | 2.75" | .62" | 4 |
1-1/2" | 2.56" | 1.61" | 2.38" | 5.00" | .063" | 2.88" | 1.90" | 2.44" | .62" | 3.88" | .62" | 4 |
1" | 1.94" | 1.05" | 2.13" | 4.25" | .063" | 2.00" | 1.32" | 2.19" | .50" | 3.12" | .62" | 4 |
2" | 3.06" | 2.07" | 2.44" | 6.00" | .063" | 3.62" | 2.38" | 2.50" | .69" | 4.75" | .75" | 4 |
2-1/2" | 3.56" | 2.47" | 2.69" | 7.00" | .063" | 4.12" | 2.88" | 2.75" | .82" | 5.50" | .75" | 4 |
3" | 4.25" | 3.07" | 2.69" | 7.50" | .063" | 5.00" | 3.50" | 2.75" | .88" | 6.00" | .75" | 4 |
4" | 5.31" | 4.03" | 2.94" | 9.00" | .063" | 6.19" | 4.50" | 3.00" | .88" | 7.50" | .75" | 8 |
5" | 6.44" | 5.05" | 3.44" | 10.00" | .063" | 7.31" | 5.56" | 3.50" | .88" | 8.50" | .88" | 8 |
3-1/2" | 4.81" | 3.55" | 2.75" | 8.50" | .063" | 5.50" | 4.00" | 2.81" | .88" | 7.00" | .75" | 8 |
6" | 7.56" | 6.07" | 3.44" | 11.00" | .063" | 8.50" | 6.63" | 3.50" | .94" | 9.50" | .88" | 8 |
8" | 9.69" | 7.98" | 3.94" | 13.50" | .063" | 10.62" | 8.63" | 4.00" | 1.06" | 11.75" | .88" | 8 |
22" | 24.25" | 21.25" | 5.82" | 29.50" | .063" | 25.25" | 22.00" | 5.88" | 1.75" | 27.25" | 1.38" | 20 |
10" | 12.00" | 10.02" | 3.94" | 16.00" | .063" | 12.75" | 10.75" | 4.00" | 1.13" | 14.25" | 1.00" | 12 |
12" | 14.38" | 12.00" | 4.44" | 19.00" | .063" | 15.00" | 12.75" | 4.50" | 1.19" | 17.00" | 1.00" | 12 |
16" | 18.00" | 15.25" | 4.94" | 23.50" | .063" | 18.50" | 16.00" | 5.00" | 1.38" | 21.25" | 1.12" | 16 |
18" | 19.88" | 17.25" | 5.44" | 25.00" | .063" | 21.00" | 18.00" | 5.50" | 1.50" | 22.75" | 1.25" | 16 |
14" | 15.75" | 13.25" | 4.94" | 21.00" | .063" | 16.25" | 14.00" | 5.00" | 1.32" | 18.75" | 1.12" | 12 |
20" | 22.00" | 19.25" | 5.63" | 27.50" | .063" | 23.00" | 20.00" | 5.69" | 1.63" | 25.00" | 1.25" | 20 |
24" | 26.12" | 23.25" | 5.94" | 32.00" | .063" | 27.25" | 24.00" | 6.00" | 1.82" | 29.50" | 1.38" | 20 |
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