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ASTM A350 LF2 Flanges

ASTM A350 LF2 Flanges

Carbon Steel A350 LF2 CL1 Flanges Specification

Standards Specification Of : ASTM A350 LF2 Flanges
Manufacturing Shapes RTJ,FF, Raised Face, Lap-Joint Face, Large Tongue & Groove And Small Tongue Groove, Large Male-Female And Small Male-Female
Size Chart 1/2" to 48"
Flanges Standards MSS S44, ISO70051, EN-1092, ANSI/ASME B16.5, B16.47 Series A & B, ASME B16.48, ASME B16.36, DIN, BS1560-3.1, API7S-15, API, ISO, UNI, AWWA C207, IS 2062, EN1092, API7S-43, API605, BS4504
Pressure Rating ANSI 150#, 300#, 400#, 600#, 900#, 1500#, 2500#
Production technique
  • Heat treated, Forged and machined
Most common types Threaded / Screwed / Forged / Plate
Japanese Standards 5K, 10 K, 40 K, 16 K 20 K 30 K, 63 K

Ltcs A350 LF2 Blind Flange Temperature

( 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


A350 LF2 Welding Neck 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 Chemical Composition

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