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ASTM A350 LF1 LF2 LF3 LF5 Forged Self Reinforce Nozzles For Pressure Vessel

Name: ASTM A350 LF1 LF2 LF3 LF5 Forged Self Reinforce Nozzles For Pressure Vessel
Brand: YUHONG
Price: 1 USD

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Brand Name :	YUHONG
Model Number :	ASTM A350 CL.2
Certification :	ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2015
Price :	NEGOTIABLE
Payment Terms :	L/C, T/T
Supply Ability :	According To Client's Request
Delivery Time :	10-90 Days

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ASTM A350 LF1 LF2 LF3 LF5 Forged Self Reinforce Nozzles For Pressure Vessel

ASTM A350 LF2 Forged Self Reinforce Nozzles For Pressure Vessel

ASTM A350 LF2 is a low-temperature carbon steel forging material that requires mandatory notch toughness testing. It is a specific grade within the ASTM A350 standard. Its excellent resistance to brittle fracture in low-temperature environments makes it widely used in the manufacture of pressure-bearing piping components such as flanges, valves, and fittings. It is particularly suitable for applications requiring low temperatures or high toughness, such as liquefied natural gas (LNG) and petrochemical cold zones.

The ASTM A350 LF2 Self-Reinforced Nozzle is a nozzle made of LF2-grade forged steel with -46°C impact toughness. Its inherently thickened wall meets the ASME specification for opening reinforcement, eliminating the need for external reinforcement rings. This design is particularly suitable for applications requiring high low-temperature toughness and structural simplicity. Design and manufacturing must strictly adhere to the ASME BPVC specification.

Chemical Composition

Element	Composition, w.t % Grades
Element	LF1	LF2	LF3	LF5	LF6	LF9	LF787
Carbon max	0.30	0.30	0.20	0.30	0.22	0.20	0.07
Manganese	0.60-1.35	0.60-1.35	0.90 max	0.60-1.35	1.15-1.50	0.40-1.06	0.40-0.70
Phosphorus max	0.035	0.035	0.035	0.035	0.025	0.035	0.025
Sulfur max	0.040	0.040	0.040	0.040	0.025	0.040	0.025
Silicon(a)	0.15-0.30	0.15-0.30	0.20-0.35	0.20-0.35	0.15-0.30	...	0.40 max
Nickel	0.40 max(b)	0.40 max(b)	3.30-3.70 max	1.00-2.00 max	0.40 max(b)	1.60-2.24	0.70-1.00
Chromium	0.30 max(b)(c)	0.30 max(b)(c)	0.30 max(c)	0.30 max(c)	0.30 max(b)(c)	0.30 max(c)	0.60-0.90
Molybdenum	0.12 max(b)(c)	0.12 max(b)(c)	0.12 max(c)	0.12 max(c)	0.12 max(b)(c)	0.12 max(c)	0.15-0.25
Copper	0.40 max(b)	0.40 max(b)	0.40 max	0.40 max	0.40 max(b)	0.75-1.25	1.00-1.30
Niobium(e)	0.02 max(d)	0.02 max(d)	0.02 max	0.02 max	0.02 max	0.02 max	-0.02 min
Vanadium	0.08 max	0.08 max	0.03 max	0.03 max	0.04-0.11	0.03 max	0.03 max
Nitrogen	...	...	...	...	0.01-0.030	...	...

Mechanical Requirements

Grade Class	Tensile Strength		Yield Strength min		Elongation min	Hardness max
Grade Class	ksi	MPa	ksi	MPa	%	HBW
LF1 CL1	60-85	415-585	30	205	25	197
LF2 CL1	70-95	485-655	36	250	22	197
LF2 CL2	70-95	485-655	36	250	22	197
LF3 CL1	70-95	485-655	37.5	260	22	197
LF3 CL2	70-95	485-655	37.5	260	22	197
LF5 CL1	60-85	415-585	30	205	25	197
LF5 CL2	70-95	485-655	37.5	260	22	197
LF6 CL1	66-91	455-630	52	360	22	197
LF6 CL2	75-100	515-690	60	415	20	197
LF6 CL3	75-100	515-690	60	415	20	197
LF9	63-88	435-605	46	315	25	197
LF787 CL2	65-85	450-585	55	380	20	197
LF787 CL3	75-95	515-655	65	450	20	197

Charpy V-Notch Impact Properties

Charpy V-Notch Energy Requirements for 10x10 mm Specimens
Grade Class	A		B
Grade Class	ft·lbf	J	ft·lbf	J
LF1 LF9	13	18	10	14
LF2 CL1	15	20	12	16
LF3 CL1	15	20	12	16
LF5 CL1 CL2	15	20	12	16
LF787 CL2 CL3	15	20	12	16
LF6 CL1	15	20	12	16
LF2 CL2	20	27	15	20
LF3 CL2	20	27	15	20
LF6 CL2 CL3	20	27	15	20

Frequently used ASTM Grades

Material	Pipes	Fittings	Flanges	Valves	Bolts & Nuts
Carbon Steel	A106 Gr A	A234 Gr WPA	A105	A216 Gr WCB	A193 Gr B7 A194 Gr 2H
	A106 Gr B	A234 Gr WPB	A105	A216 Gr WCB
	A106 Gr C	A234 Gr WPC	A105	A216 Gr WCB

Carbon Steel Alloy High-Temp	A335 Gr P1	A234 Gr WP1	A182 Gr F1	A217 Gr WC1	A193 Gr B7 A194 Gr 2H
	A335 Gr P11	A234 Gr WP11	A182 Gr F11	A217 Gr WC6
	A335 Gr P12	A234 Gr WP12	A182 Gr F12	A217 Gr WC6
	A335 Gr P22	A234 Gr WP22	A182 Gr F22	A217 Gr WC9
	A335 Gr P5	A234 Gr WP5	A182 Gr F5	A217 Gr C5
	A335 Gr P9	A234 Gr WP9	A182 Gr F9	A217 Gr C12

Carbon Steel Alloy Low-Temp	A333 Gr 6	A420 Gr WPL6	A350 Gr LF2	A352 Gr LCB	A320 Gr L7 A194 Gr 7
Carbon Steel Alloy Low-Temp	A333 Gr 3	A420 Gr WPL3	A350 Gr LF3	A352 Gr LC3	A320 Gr L7 A194 Gr 7

Austenitic Stainless Steel	A312 Gr TP304	A403 Gr WP304	A182 Gr F304	A182 Gr F304	A193 Gr B8 A194 Gr 8
	A312 Gr TP316	A403 Gr WP316	A182 Gr F316	A182 Gr F316
	A312 Gr TP321	A403 Gr WP321	A182 Gr F321	A182 Gr F321
	A312 Gr TP347	A403 Gr WP347	A182 Gr F347	A182 Gr F347

Application

Cryogenic Pressure Vessels and Systems

Liquefied Natural Gas (LNG) Facilities: Connections to Storage Tanks, Vaporizers, and Cryogenic Pumps.

Petrochemical Cryogenic Plants: Ethylene/Propylene Splitter, Cryogenic Storage Tanks, and Refrigeration Units.

Air Separation Units (ASUs): Liquid Oxygen/Liquid Nitrogen Storage Tanks and Pipeline Interfaces.

Harsh Environment Pressure Pipelines

Branch Connections for Oil and Gas Pipelines in Arctic and Cold Regions.

Valve and Instrument Interfaces for Refrigerant (e.g., Ammonia, CO₂) Circulation Systems.

High-Cleanliness and Corrosion-Sensitive Systems

Aseptic Connections for Pharmaceutical/Bioreactor and Food Processing Tanks.

Seawater Cooling Systems (LF2 requires an anti-corrosion coating).

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ASTM A350 LF1 LF2 LF3 LF5 Forged Self Reinforce Nozzles For Pressure Vessel

ASTM A350 LF1 LF2 LF3 LF5 Forged Self Reinforce Nozzles For Pressure Vessel

ASTM A350 LF1 LF2 LF3 LF5 Forged Self Reinforce Nozzles For Pressure Vessel

Chemical Composition

Mechanical Requirements

Charpy V-Notch Impact Properties

Frequently used ASTM Grades

ASTM A350 LF2 cryogenic nozzle

self-reinforced pressure vessel nozzle

cryogenic system LF2 nozzle

ASTM A350 LF1 LF2 LF3 LF5 Forged Self Reinforce Nozzles For Pressure Vessel

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