ASTM A350 LF2 Flanges

What is ASTM A350 LF2 Flange?

ASTM A350 LF2 Flanges is used for both welding and screw types. The flanges are screwed or welded together with the pipes to form the connection. Carbon, silicon, manganese, phosphorus, sulfur, molybdenum, copper, chromium, nickel, vanadium, and niobium are all properties of the material. Western Steel Agency is a leading ASME SA 350 GR LF2 Flanges Manufacturer and Supplier in India. The A350 LF2 Class 1 Flange is the most often used, with Class 2 utilized in specialized applications. Heat treatment can also be used to harden the flanges. Normalizing and tempering are thermal treatment procedures. The A350 LF2 Blind Flange is a type of flange that is put to the ends of pipes to completely close a pipeline.

ASTM A350 LF2 Flanges

Carbon Steel A350 LF2 Flanges Application & Uses

  • ASTM A350 LF2 Flanges used in Chemicals Industry
  • Carbon Steel A350 LF2 Flanges used in Heavy oil refineries.
  • ASTM A350 LF2 Flanges used in Textile Machinery.
  • ASTM A350 LF2 Flanges used in Bitumen upgraders.
  • Carbon Steel A350 LF2 Flanges used in Nuclear power (mostly seamless).
  • A350 Lf2 Carbon Steel Flanges used in Petrochemicals and acids.
  • ASTM A350 Carbon Steel Flanges used in Pulp and Paper Industry

The Carbon Steel A350 LF2 Slip On Flanges are used with seamless pipes for easy installation because the flanges allow the pipes to slip onto the flange and move to the correct place before welding or attaching. Incomparable capacity, the ASTM A350 Grade LF2 Class 2 Pipe Flange is utilized. The ASTM A350 specification covers forged or ring-rolled carbon and low-alloy steel flanges, fittings, and valves. These ASTM A350 Grade LF2 components are primarily suited for use in low-temperature applications that need notch toughness testing.

ASME SA 350 GR LF2 Weld Neck Flanges Specification

Size 1/2″ TO 4″
Range 15 NB TO 100 NB IN 3000 LBS, 6000 LBS, 9000 LBS
Grade ASTM / ASME A105/ A105N/ A694 F42/46/52/56/60/65/70 / A350 LF3/ A350 LF2
Pressure Rating 2000#, 3000#, 6000#, 9000#
Class 150#, 300#, 400#, 600#, 900#, 1500# & 2500#.
Type Socketweld Fittings, Screwed-Threaded Fittings
Form Tee, Union, Full Coupling, Half Coupling, Elbow 45 Deg & 90 Deg, Swage Nipple, Cross, Cap, Plug Bush

Most Selling Types Of A350 LF2 Flanges

ASTM A350 LF2 Flanges
ASTM A694 Flange
ASTM A182 F202 Flange
ASTM A182 F304 Flange
ASTM A182 F304L Flange
ASTM A182 F310 Flange
ASTM A182 F316 Flange
ASTM A182 F316L Flange
ASTM A182 F321 Flange
ASTM A182 F347 Flange
ASTM A182 904L Flange
Inconel 600 Flange
Inconel 625 Flange
Hastelloy C276 Flange
Hastelloy C22 Flange
Monel 400 Flange
Monel K500 Flange Nickel Alloys Flange
Duplex Steel Flange Super Duplex Steel Flange
Titanium Flanges
Alloy 20 Flange
Incoloy 800 Flange
Incoloy 825 Flange

Chemical and Mechanical Properties of ASTM A350 Grade LF2 Class 2 Pipe Flange, Size Chart Of Carbon Steel A350 LF2 Flange, Sa350 Gr Lf2 Forged Flange Pressure Chart, ASTM A350 LF2 Equivalent Material

Chemical Properties of ASTM A350 LF2 Flanges

Grade C% Mn% Si% S% P% Cr% Ni%
LF1 0.30 max 0.6/1.35 .15/.30 .040 max .035 max 0.30 max 0.40 max
Lf2 0.30 max 0.6/1.35 .15/.30 .040 max .035 max 0.30 max 0.40 max
LF3 0.20 max 0.90 .20/.35 .040 max .035 max 0.30 max 3.3/3.7

Mechanical Properties of ASTM A350 LF2 Flanges

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)

A350 LF2 Carbon Steel Pipe Flange Weight Chart

Standard Class Diameter Bolt Circle Diameter Number of Bolts Bolt Size Diameter of Bolt Hole
AS4087 PN14 95 67 4 M12 14
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
ASTM B16.5 ASTM 150 89 60 4 13 16
ASTM 300 95 67 4 13 16
ASTM 600 95 67 4 13 16
ASTM 900 121 83 4 19 22
ASTM 1500 121 83 4 19 22
ISO 7005 (DIN) Flange PN6 80 55 4 M10 11
PN10 95 65 4 M12 14
PN16 95 65 4 M12 14
PN20 90 60.5 4 M14 16
PN25 95 65 4 M12 14
PN40 95 65 4 M12 14

ASTM A350 LF2 Equivalent Material

Material Group 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)
Low-Temperature Carbon Steel LTCS C-Mn-Fe K03011 A350-LF2 A352-LCB A352-LCC TASTE 355 DIN 18103 1.0566 General non-corrosive service from -46ºC (-50ºF) to 340ºC (650ºF), LF2 -46ºC ~ 425ºC
Low-Temperature Alloy Steel Nickel Steel 3.1/2Ni K32025 A350-LF3 A352-LC3 10Ni14 1.5637 -101ºC (150ºF) to 340ºC (650ºF)

Price List of ASTM A350 Grade LF2 Class 1

ASTM A350 LF2 Flanges Price Per Piece in India ASME SA350 LF2 Flanges Price in INR
ASTM A350 LF2 CL1/CL2 Flanges $200.00/ Piece
ASTM A350 LF2 Steel Flanges $1.00-$500.00/ Piece
150# RF SCH 80 ASME B16.5 ASTM A350 LF2 CL 1 LTCS WN Flanges $5.00-$2,000.00/ Piece
A350 LF2 Weld Neck Rtj / Orifice flanges $1,200.00/ Piece

A350 LF2 Carbon Steel Pipe Flange Dimensions

AMERICAN SOCIETY OF MECHANICAL ENGINEERS (ASME)
  • ASME B1.20.1, Pipe Threads, General Purpose
  • ASME B16.1, Cast Iron Flanges and Flanged Fittings Classes 25, 125 and 250
  • ASME B16.5, Pipe Flanges and Flanged Fittings NPS 1/2 Through NPS 24
  • ASME B16.11, Forged Fittings, Socket Welding, and Threaded
  • ASME B16.25, Buttwelding Ends
  • ASME B16.36, Orifice Flanges
  • ASME B16.47, Large Diameter Steel Flanges NPS 26 Through NPS 60
  • ASME B31.1, Power Piping
  • ASME B31.3, Process Piping
  • ASME B46.1, Surface Texture (Surface Roughness, Waviness, and Lay)

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