ASTM A350 LF2 Flanges Manufacturer in USA – Low Temperature Forged Flanges

ASTM A350 LF2 Low Temperature Carbon Steel Flanges Manufacturer in USA, ASTM A350 LF2 Slip-On Flanges Exporter, ASTM A350 LF2 Threaded Flanges Supplier, ASTM A350 LF2 Socket Weld Flanges Stockist, ASTM A350 LF2 Blind Flanges Manufacturer, ASTM A350 LF2 Weld Neck Flanges Distributor, ASTM A350 LF2 Plate Flanges Supplier, ASTM A350 LF2 Long Weld Neck Flanges Exporter.

ASTM A350 LF2 Carbon Steel Flanges is used in low temperature and cryogenic services, which require strength, versatility as well as dependable sealing. USA Piping Solution is a reputable manufacturer and supplier of the USA who provides ASTM A350 LF2 Low-Temperature Carbon Steel Flanges of different types such as weld neck, slip-on, blind, socket weld, threaded and lap joint. The flanges are manufactured using high quality LTCS, which has good impact resistance, ductility and corrosion resistance during harsh operating conditions. They are designed to ASME B16.5, ASME B16.47 and MSS SP- 44 standards, with pressure classes of 150 to 2500 and sizes of 1/2 inch to 48 inches. A350 LF2 flanges with chemical composition of UNS K03011 have high mechanical performance, even at -46o C, hence, are suitable in oil and gas, LNG, petrochemical, and power sectors. All flanges are quality tested and certified according to EN 10204 3.1 as fully traceable and reliable.

ASTM A350 LF2 Equivalent Material Comparison and International Standards

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	TSTE 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)

Low Temperature ASTM A350 LF2 Flanges Types and Applications

ASTM A350 LF2 Chemical Composition

Element	Composition
Carbon, max	0.30
Manganese	0.60 - 1.35
Phosphorus, max	0.035
Sulfur, max	0.040
Silicon [Note A]	0.15 - 0.30
Nickel	0.40 max [Note B]
Chromium	0.30 max [Note B,C]
Molybdenum	0.12 max [Note B,C]
Copper	0.40 max [Note B]
Columbium	0.02 max [Note B]
Vanadium	0.08 max

ASTM A350 LF2 Bar Mechanical Properties and Tensile Strength

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)

ASTM A350 LF2 Grade Pipe Flanges Size Range and Dimensions

Nom. Pipe Size	O	T1	R	X	No.2/Dia. of Holes	Bolt Circle Dia.	L21	H	B23	L	B	r	L34	B3	D
1/2	3.50	0.44	1.38	1.19	4-0.62	2.38	1.88	0.84	0.62	0.62	0.88	0.12	0.62	0.90	0.38
3/4	3.88	0.50	1.69	1.50	4-0.62	2.75	2.06	1.05	0.82	0.62	1.09	0.12	0.62	1.11	0.44
1	4.25	0.56	2.00	1.94	4-0.62	3.12	2.19	1.32	1.05	0.69	1.36	0.12	0.69	1.38	0.50
1-1/4	4.62	0.62	2.50	2.31	4-0.62	3.50	2.25	1.66	1.38	0.81	1.70	0.19	0.81	1.72	0.56
1-1/2	5.00	0.68	2.88	2.56	4-0.62	3.88	2.44	1.90	1.61	0.88	1.95	0.25	0.88	1.97	0.62
2	6.00	0.75	3.62	3.06	4-0.75	4.75	2.50	2.38	2.07	1.00	2.44	0.31	1.00	2.46	0.69
2-1/2	7.00	0.88	4.12	3.56	4-0.75	5.50	2.75	2.88	2.47	1.12	2.94	0.31	1.12	2.97	0.75
3	7.50	0.94	5.00	4.25	4-0.75	6.00	2.75	3.50	3.07	1.19	3.57	0.38	1.19	3.60	0.81
3-1/2	8.50	0.94	5.50	4.81	8-0.75	7.00	2.81	4.00	3.55	1.25	4.07	0.38	1.25	4.10	0.88
4	9.00	0.94	6.19	5.31	8-0.75	7.50	3.00	4.50	4.03	1.31	4.57	0.44	1.31	4.60	0.94
5	10.00	0.94	7.31	6.44	8-0.88	8.50	3.50	5.56	5.05	1.44	5.66	0.44	1.44	5.69	0.94
6	11.00	1.00	8.50	7.56	8-0.88	9.50	3.50	6.63	6.07	1.56	6.72	0.50	1.56	6.75	1.06
8	13.50	1.12	10.62	9.69	8-0.88	11.75	4.00	8.63	7.98	1.75	8.72	0.50	1.75	8.75	1.25
10	16.00	1.19	12.75	12.00	12-1.00	14.25	4.00	10.75	10.02	1.94	10.88	0.50	1.94	10.92	1.31
12	19.00	1.25	15.00	14.38	12-1.00	17.00	4.50	12.75	12.00	2.19	12.88	0.50	2.19	12.92	1.56
14	21.00	1.38	16.25	15.75	12-1.12	18.75	5.00	14.00	13.25	2.25	14.14	0.50	3.12	14.18	1.63
16	23.50	1.44	18.50	18.00	16-1.12	21.25	5.00	16.00	15.25	2.50	16.16	0.50	3.44	16.19	1.75
18	25.00	1.56	21.00	19.88	16-1.25	22.75	5.50	18.00	17.25	2.69	18.18	0.50	3.81	18.20	1.94
20	27.50	1.69	23.00	22.00	20-1.25	25.00	5.69	20.00	19.25	2.88	20.20	0.50	4.06	20.25	2.13
22	29.50	1.81	25.25	24.25	20-1.38	27.25	5.88	22.00	21.25	3.13	22.22	0.50	4.25	22.25	2.38
24	32.00	1.88	27.25	26.12	20-1.38	29.50	6.00	24.00	23.25	3.25	24.25	0.50	4.38	24.25	2.50

Application of Low Temperature ASTM A350 LF2 Flanges

Applications

• Used in low-temperature and cryogenic pipeline systems
• Suitable for Oil & Gas, LNG, and Petrochemical processing units
• Installed in offshore drilling, refinery, and power generation projects
• Applied in pressure vessels, condensers, and heat exchangers (internal Links - Heat Exchanger Tubes & Pipes Supplier USA | USA Piping Solution)
• Preferred for cryogenic storage tanks and cooling systems
• Reliable for industries requiring impact-resistant flanges at sub-zero temperatures

Industries Served:

• Oil & Gas
• Petrochemical & Refinery
• LNG & Cryogenic
• Power Generation
• Offshore & Marine Engineering

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