ASTM A350 LF2 Flanges, SA 350 LF2 Cl1 and Cl2 Composition

ASTM A350 LF2 Flanges at a Glance

Stock Sizes: 1/2 to 48″
Types: Forged, Threaded, Plate
Tensile Strength: 485-620 MPa
Yield strength: 205 MPa
Density: 7.85 g/cm³
Thermal conductivity: 21.6 W/mK
UNS: K03011
Werkstoff Nr: 1.0566
Melting Point : 1425°C

SA 350 LF2 Cl1 and Cl2 Material Manufacturer in India as per ASME B16.5

ASTM A350 LF2 Flanges

ASTM A350 grade LF2 Weld Neck Flange

A350 Gr LF2 cl1 Blind Flange

Table Of Content

ASTM A350 LF2 Flanges Specification
Types of ASTM A350 LF2 Flanges
Standards For ASTM A350 grade LF2 Weld Neck Flange
SA350 steel Plate Flanges Applications
Pressure Chart of A350 Gr LF2 cl1 Slip On Flange
Chemical Composition of A350 Grade LF2 Forged Flange
SA 350 gr LF2 Pipe Flange Physical Properties
Thermal Properties Of A350 gr LF2 Reducing Flange
ASTM A350 LF2 class 1 Socket Weld Flange Mechanical Properties
A350 Gr LF2 Orifice Flange Equivalent Grades
Face Types Of A350 LF2 Blind Flanges
Dimension Chart Of SA 350 LF2 Forged Pipe Flange
Torque Chart Of ASTM A350 LF2 Slip On Flange
Weight Chart UNS K03011 Plate Flanges
Client Reference List For ASTM A350 LF2 Flanges
A350 gr LF2 Reducing Flange Coating Types
How To Check ASTM A350 LF2 Flanges Working Properly Or Not ?

ASTM A350 LF2 Class 1 Blind Flange and SORF Flanges in Socket or Threaded Connections

ASTM A350 LF2 Flanges Specification

ASTM A350 LF2 Flanges Sizes

1/2 to 48″
15 NB to 1200NB
DN10 to DN5000

A350 LF2 Blind Flange pressure class

Class 900-2500
Class 150-600

Manufacturing methods of A350 gr LF2 BLFF flange

Plate
Forged
Cast

SA350 LF2 Blind Flange Connection Types

RTJ, SMF
FF, RF
LMF, T&G

A350 LF2 class 1 Pipe Flange Supporting Material

Gaskets
Nuts/ Bolts
Ring Joint

A350 LF2 carbon steel Reducing Flange Coating Methods

Anti-Rust
Electric Zinc
Oil Varnished

SA350 steel Plate Flanges Process

Heat treatment
Packaging
Forming
Machining
Inspection test

UNS K03011 Orifice Flange Schedule

SCH 160/ 180
SCH 60/ 80/ 100
SCH 10/ 20/ 40
SCH 120/ 140

A350 LF2 Weld Neck Flange Advantages

Cost-Effective
Temperature Resistant
Superior mechanical properties

Certificate of ASME A350 LF2 FFSW flange

Third Party Inspection
NACE MR0175
MTC BS EN 10204 3.1/ 3.2
100% Radiography Test

SA 350 LF2 CL1 SORTJ flange Finish

Stock finish
Mirror finish
Concentric serrated
Cold water finish
Smooth finish

Threads Types of SA 350 gr LF2 Flange

MNPT
BSPP
NPT,FPT
MPT/ BSPT
BSP

ASTM A350 grade LF2 RFWN flange Face Type

LJ face
FF face
RTJ face
T&G face
RF face

A350 carbon steel weld flanges Packaging

Plastic bag
Wooden case
Carton box
Or custom

Applications of LF2 class 1 pipe flange

Gas Processing
Refineries
Food Processing

Types of ASTM A350 LF2 Flanges

ASTM A350 LF2 Blind Flange

A350 LF2 Weld Neck Flange

ASTM A350 LF2 class 1 Socket Weld Flange

SA 350 LF2 Threaded Flange

A350 LF2 carbon steel Slip On Flange

A350 gr LF2 Reducing Flange

SA 350 gr LF2 Lap Joint Flange

SA350 steel Plate Flanges

SA350 LF2 Long Weld Neck Flange

UNS K03011 Orifice Flange

A350 LF2 steel Raised Face Flange

ASTM A350 grade LF2 Weld Neck Flange as per ANSI/ ASME, API, and AWWA

Standards For ASTM A350 grade LF2 Weld Neck Flange

ASME B16.34
ASME B16.5
ASME B16.20
ASME B16.48

SA 350 LF2 Socket Weld Flange for Pressure Vessels and Petrochemical Plants

SA 350 steel Plate Flanges Applications

A350 gr LF2 cl1 Slip On Flange in 150 lb, 300 lb and 600 lb

Pressure Chart of A350 Gr LF2 cl1 Slip On Flange

TEMP °C	400	300	150	900	600	2500	1500
50	66.8	50.1	19.2	150.4	100.2	417.7	250.6
-29 TO 38	68.1	51.1	19.6	153.2	102.1	425.5	255.3
150	60.1	45.1	15.8	135.2	90.2	375.6	225.4
250	55.9	41.9	12.1	125.8	83.9	349.5	209.7
200	58.4	43.8	13.8	131.4	87.6	365	219
325	51.6	38.7	9.3	116.1	77.4	322.6	193.6
100	62.1	46.6	17.7	139.8	93.2	388.3	233
300	53.1	39.8	10.2	119.5	79.6	331.8	199.1
350	50.1	37.6	8.4	112.7	75.1	313	187.8
500	15.7	11.8	2.8	35.3	23.5	97.9	58.8
450	30.7	23	4.6	69	46	191.7	115
538	7.9	5.9	1.4	17.7	11.8	49.2	29.5
400	46.3	34.7	6.5	104.2	69.4	289.3	173.6
375	48.5	36.4	7.4	109.1	72.7	303.1	181.8
425	38.4	28.8	5.5	86.3	57.5	239.7	143.8
475	23.2	17.4	3.7	52.3	34.9	145.3	87.2

Chemical Composition of A350 Grade LF2 Forged Flange

Grade	Mn%	S%	C%	P%	Si%	Cr%
Lf2 Cl1	0.6/1.35	.040 max	0.30 max	.035 max	.15/.30	0.30 max
LF1 Cl2	0.6/1.35	.040 max	0.30 max	.035 max	.15/.30	0.30 max

SA 350 gr LF2 Pipe Flange Physical Properties

Density	7.85 g/cm³
Melting Point	1425°C

Thermal Properties Of A350 gr LF2 Reducing Flange

Properties	Imperial	Metric
Thermal conductivity	150 BTU in/hr.ft².°F	21.6 W/mK
Thermal expansion co-efficient	5.78 µin/in°F	10.4 µm/m°C

ASTM A350 LF2 class 1 Socket Weld Flange Mechanical Properties

A350 Gr LF2 Orifice Flange Equivalent Grades

UNS

K03011

Werkstoff Nr

1.0566

Face Types Of A350 LF2 Blind Flanges

Face Types	Full Form
BLRF	Blind Raised Face
RFBL	Raised Face Blind
FFBL	Flat Face Blind
BLRTJ	Blind Raised Face Ring Joint
RTJBL	Ring Type Joint Blind
BLFF	Blind Flat Face

Dimension Chart Of SA 350 LF2 Forged Pipe Flange

	Outside	Bore	Thick-	Total	Neck			Hub			Raised Face	Holes		Net
Size		Diam.	Diam.	ness	Thickness	Base Diam.	Thickness	Thickness-	Diam.	Radius	P.C.D	Diam.	No.	Thickness	OutsideDiam.	Weight
mm	inch	D	BI*	t	TI	x	t2	tl	A	R	K	h	n	f	G	kg
25	I	107.95	26.67	14.22	55.63	49.28	33.02	8.38	33.53	3.05	79.25	15.75	4	1.60	50.80	1.03
65	2 1/2	177.80	62.74	22.35	69.85	90.42	38.10	9.40	73.15	7.87	139.70	19.05	4	1.60	104.65	4.17
300	12	482.60	304.80	31.75	114.30	365.25	66.04	16.51	323.85	12.70	431.80	25.40	12	1.60	381.00	36.93
350	14	533.40	336.55	35.05	127.00	400.05	73.66	18.29	355.60	12.70	476.25	28.45	12	1.60	412.75	48.88
80	3	190.50	77.93	23.88	69.85	107.95	36.83	9.14	88.90	9.65	152.40	19.05	4	1.60	127.00	4.99
450	18	635.00	438.15	39.62	139.70	504.95	80.01	20.07	457.20	12.70	577.85	31.75	16	1.60	533.40	68.37
50	2	152.40	52.58	19.05	63.50	77.72	35.56	8.89	60.45	7.87	120.65	19.05	4	1.60	91.95	2.60
200	8	342.90	202.72	28.45	101.60	246.13	58.42	14.73	219.20	12.70	298.45	22.35	8	1.60	269.75	17.68
32	1 1/4	117.35	35.05	15.75	57.15	58.67	33.02	8.38	42.16	4.83	88.90	15.75	4	1.60	63.50	1.34
40	1 1/2	127.00	40.89	17.53	61.98	65.02	35.56	8.89	48.26	6.35	98.55	15.75	4	1.60	73.15	1.74
125	5	254.00	128.19	23.88	88.90	163.58	52.07	12.95	141.22	11.18	215.90	22.35	8	1.60	185.67	8.72
150	6	279.40	154.05	25.40	88.90	192.02	50.80	12.70	168.40	12.70	241.30	22.35	8	1.60	215.90	10.74
100	4	228.60	102.26	23.88	76.20	134.87	41.91	10.41	114.30	11.18	190.50	19.05	8	1.60	157.23	6.98
250	10	406.40	254.51	30.23	101.60	304.80	57.15	14.22	273.05	12.70	361.95	25.40	12	1.60	323.85	24.25
15	1/2	88.90	15.75	11.18	47.75	30.23	29.21	7.37	21.34	3.05	60.45	15.75	4	1.60	35.05	0.49
400	16	596.90	387.35	36.58	127.00	457.20	72.39	18.03	406.40	12.70	539.75	28.45	16	1.60	469.90	60.47
20	1/4	98.55	20.83	12.70	52.32	38.10	31.75	7.87	26.67	3.05	69.85	15.75	4	1.60	42.93	0.72
90	31/2	215.90	90.17	23.88	71.37	122.17	38.10	9.40	101.60	9.65	177.80	19.05	8	1.60	139.70	6.18
500	20	698.50	488.95	42.93	144.53	558.80	81.28	20.32	508.00	12.70	635.00	31.75	20	1.60	584.20	84.60

Torque Chart Of ASTM A350 LF2 Slip On Flange

Nom Size (in)	Bolt Lubricant: Copperslip (μ = 0.1)	Bolt Lubricant: Molycote 1000 (μ = 0.13)	Torque (Ibf.ft, Nm)	Bolting No. x Dia. in	Torque (Ibf.ft, Nm)	A/F in
2 (50)	75 (100)	75 (100)	95 (130)	3 (80)	95 (130)	75 (100)
4 (100)	75 (100)	75 (100)	95 (130)	6 (150)	95 (130)	120 (165)
1/2 (15)	7/8	25 (35)	20 (30)	3/4 (20)	30 (40)	7/8
8 (200)	120 (165)	120 (165)	150 (205)	10 (250)	150 (205)	175 (240)
12 (300)	180 (245)	180 (245)	230 (310)	14 (350)	230 (310)	295 (400)
1 (25)	7/8	35 (50)	30 (40)	1 - 1/2 (40)	50 (70)	7/8
30 (750)	360 (490)	630 (855)	455 (615)	42 (1070)	800 (1085)	630 (855)
16 (400)	240 (325)	240 (325)	300 (405)	18 (450)	300 (405)	415 (565)
20 (500)	415 (565)	415 (565)	520 (705)	24 (600)	520 (705)	575 (780)
36 (900)	800 (1085)	48 (1220)	955 (1300)	4 * 1/2	600 (855)	20 * 1 - 1/8
32 (800)	800 (1085)	3/4	1070 (1450)	-	1700	-

Weight Chart UNS K03011 Plate Flanges

NPS	Weld Neck flange	Slip On flange	Blind flange
½	7	6	4
1	9	8	9
2	25	25	25
3	48	48	48
4	73	73	73
2½	36	36	35
8	275	260	302
24	3325	2825	3625
10	455	436	510
5	132	132	140
¾	7	6	6
6	165	165	160
16	1250	1250	1300
20	2050	2050	2225
18	1625	1625	1750

Client Reference List For ASTM A350 LF2 Flanges

Projects	Location	Material
Asorc Naphtha complex project (ISBL)	Egypt	ASTM A350 LF2 Pipe Flange
Jebel Ali expansion project	Dubai	SA 350 LF2 Threaded Flange
EFRA Project	Italy	ASME A350 LF2 Hot Forged Flanges
Gentse Warmte Centrale project	Belgium	ASME SA350 LF2 forged flange
REACTOR REPLACEMENT FOR R-501 POWERFORMING UNIT ROTTERDAM REFINERY	Netherlands	SA350 material Flanges

A350 gr LF2 Reducing Flange Coating Types

How To Check ASTM A350 LF2 Flanges Working Properly Or Not ?

Visual inspections
Dimensional checks
Non-destructive Testing
Impact Testing

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