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

Size1/2″ TO 4″
Range15 NB TO 100 NB IN 3000 LBS, 6000 LBS, 9000 LBS
GradeASTM / ASME A105/ A105N/ A694 F42/46/52/56/60/65/70 / A350 LF3/ A350 LF2
Pressure Rating2000#, 3000#, 6000#, 9000#
Class150#, 300#, 400#, 600#, 900#, 1500# & 2500#.
TypeSocketweld Fittings, Screwed-Threaded Fittings
FormTee, 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 FlangeNickel Alloys Flange
Duplex Steel FlangeSuper 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

LF10.30 max0.6/1.35.15/.30.040 max.035 max0.30 max0.40 max
Lf20.30 max0.6/1.35.15/.30.040 max.035 max0.30 max0.40 max
LF30.20 max0.90.20/.35.040 max.035 max0.30 max3.3/3.7

Mechanical Properties of ASTM A350 LF2 Flanges

TS Min psi (Mpa)70,000 (485)
YS Min psi (Mpa)36,000 (250)
EL (2″ Min)22%
RA Min30%
Hardness, BhnMax 197
-50ºF CharpyMin Impact
Energy F t/Lb (J):-
Set of 3 Specimen*15 (20)
For One Specimen12 (16)

A350 LF2 Carbon Steel Pipe Flange Weight Chart

StandardClassDiameterBolt Circle DiameterNumber of BoltsBolt SizeDiameter of Bolt Hole
AS 2129 FlangeTable C956741314
Table D956741314
Table E956741314
Table F956741314
Table H1148341617
Table J1148341617
ASTM B16.5ASTM 150896041316
ASTM 300956741316
ASTM 600956741316
ASTM 9001218341922
ASTM 15001218341922
ISO 7005 (DIN) FlangePN680554M1011

ASTM A350 LF2 Equivalent Material

Material GroupCommon NameMaterial TypeUNSForging Spec.Casting Spec. EquivalentDINDIN W. NoApplication
Carbon SteelCSC-SiK03504A105A216-WCBC22.8 DIN 172431.0460General non-corrosive service from -29ºC (-20ºF) to 425ºC (800ºF)
Low-Temperature Carbon SteelLTCSC-Mn-FeK03011A350-LF2A352-LCB A352-LCCTASTE 355 DIN 181031.0566General non-corrosive service from -46ºC (-50ºF) to 340ºC (650ºF), LF2 -46ºC ~ 425ºC
Low-Temperature Alloy SteelNickel Steel3.1/2NiK32025A350-LF3A352-LC310Ni141.5637-101ºC (150ºF) to 340ºC (650ºF)

Price List of ASTM A350 Grade LF2 Class 1

ASTM A350 LF2 Flanges Price Per Piece in IndiaASME 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

  • 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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