Duplex flanges | Alloy 2205 BLRF/ SORF flange manufacturer in India

Duplex 2205 Flanges are widely known to show excellent resistance to corrosive environments. This is because they comprise austenite and ferrite at the ratio of 50:50.

Adding to this, you would also see its use case in scenarios where high strength is considered. They show excellent strength characteristics.

Adding to this, Alloy 2205 blind flange also shows excellent strength and corrosion resistance properties; which are exceptional. This is the only reason why they resist acids and alkalis; such as Sulphuric acids. They even resist strong reducing acids and hot chlorides.

There are industrial standards that demand for SAF 2205 slip on flange, mainly because they resist extreme corrosion resistance scenario. In applications where intergranular corrosion must be eradicated, we use this flange. Adding to this, they even exhibit stress corrosion cracking resistance capability.

Leading Alloy 2205 blind and slip on flange manufacturer in India

Customer, on the other hand, also look for temperature tolerance of alloy 2205 forged flange. At temperature condition above 572⁰F, it is not a suitable use case as it undergoes embrittlement. So, very important to note that the operating temperature conditions must be less than 572⁰F.

Also, the minimum temperature condition for UNS S31803 reducing flange can go more down to -50⁰C. This is mainly because it exhibits better ductile nature when comparing with other martensitic and ferric grades.

For instance, if you are looking for a good quality UNS S31803 reducing flange, then we at Mesta INC welcome you with warm hearts. Here:

Customers are assured good quality services and pricing for ASTM A182 F51 flange.
On the other hand, the products are provided only on the basis of the standards set by the customers. Pricing for the same is very cost efficient. So, customers pay only for what they demand.
Samples are provided to the customers to assure non-degrading performance of UNS S31803 flange

This is one of the reasons why we are one of the prominent, and well known duplex flange manufacturers in India, winning confidence of both large scale industries and customers. We have large customer support base, where we are still assuring good quality services to them.

We are top notch stockist of Duplex 2205 Flanges, Refer dimensions of Alloy 2205 Forged Flange

Table of Content

Duplex 2205 flanges specifications

Material	Sizes	Types
Duplex 2205	1/2"-48"	Blind Weld neck Socket weld Slip on
Pressure Rating	DIN Pressure	Origin
Class 150 to Class 2500	PN 6 to PN64	Indian / Japan / USA / Korean
Coating	Face Types	ASME
Zinc Plated Anti-rust Paint	Flat face (FF) Raised face (RF) Ring type joint (RTJ)	ASME B16.5 ASME B16.47

Duplex steel flange price

Product	Price
SO FLANGE 1.5MM DUPLEX 2205	US $ 92.83 Per piece
FLANGE LWNRF SA182 GR. F51 NPS 1.5 (DN40) X 18 MM THK X CLASS 600 HUB OD 70 MM X ID 34 ASME B16.5	US $ 230.45 Per piece
300# BLRF DUPLEX 2205	US $ 63.32 Per piece

Duplex 2205 flanges types

Duplex ss flanges

Duplex 2205 Flanges

Dulex steel 2205 flange

duplex stainless steel 2205 flange

Alloy 2205 Blind Flange

Duplex Stainless Steel 2205 Slip On Flange

2205 Duplex Stainless Steel Flanges

SAF 2205 Weld neck Flanges

Alloy 2205 Stainless Steel Flange

DSS 2505 flange

ASTM A182 F51 Flange

UNS S31803 flange

SA182 S31803 socket weld flanges

2205 Duplex Stainless Steel Forged Flange

Duplex stainless steel 2205 Plate Flange

DSS 2205 Lap Joint Flange

ASTM A182 Grade F51 Threaded Flange

Duplex Ring and Spacer

Duplex 2205 Spectacle Blind Flange

UNS S31803 Long weld neck flange

Alloy 2205 Reducing Flange

2205 Duplex Expander Flange

SAF 2205 RTJ Flanges

ASTM A182 F51 Ring Joint Flanges

Duplex ss BLRF Flanges

Duplex 2205 SORF Flanges

Alloy 2205 Raised Face Flange

UNS S31803 Tongue and groove flange

Duplex stainless steel 2205 WNRF Flanges

ASTM A182 Grade F51 SWRF Flanges

Duplex ss Flat Face Flanges

ASTM A182 F51 Pipe Flanges

SAF 2205 Exhaust flanges

Class 150 Duplex flanges

Class 300 DSS 2205 flange

Class 600 2205 Duplex pipe flanges

Class 900 2205 Duplex Stainless Steel flanges

Class 1500 Duplex ss plate flange

Class 2500 Duplex 2205 flanges

We keep ready stock of SAF 2205 Weld neck Flanges in wide range of sizes, Check surface finish of ASTM A182 F51 Flange

Dimensions of Duplex blind flange

Size in mm	Size in Inch	Outer Dia.	RF Dia.	Flange Thick.	PCD	RF Height	Bolt Size UNC	No of Bolts	RF Stud Length	Machine Bolt Length	ISO Stud Size	Hole Size	Weight in kg
		A	C	B	E	D
15	1/2	90	34.9	9.6	60.3	2	1/2	4	55	50	M14	5/8	0.9
20	3/4	100	42.9	11.2	69.9	2	1/2	4	65	50	M14	5/8	0.9
25	1	110	50.8	12.7	79.4	2	1/2	4	65	55	M14	5/8	0.9
32	1 1/4	115	63.5	14.3	88.9	2	1/2	4	70	55	M14	5/8	1.4
40	1 1/2	125	73	15.9	98.4	2	1/2	4	70	65	M14	5/8	1.8
50	2	150	92.1	17.5	120.7	2	5/8	4	85	70	M16	3/4	2.3
65	2 1/2	180	104.8	20.7	139.7	2	5/8	4	90	75	M16	3/4	3.2
80	3	190	127	22.3	152.4	2	5/8	4	90	75	M16	3/4	4.1
90	3 1/2	215	139.7	22.3	177.8	2	5/8	8	90	75	M16	3/4	5.9
100	4	230	157.2	22.3	190.5	2	5/8	8	90	75	M16	3/4	7.7
125	5	255	185.7	22.3	215.9	2	3/4	8	95	85	M20	7/8	9.1
150	6	280	215.9	23.9	241.3	2	3/4	8	100	85	M20	7/8	11.8
200	8	345	269.9	27	298.5	2	3/4	8	110	90	M20	7/8	20.5
250	10	405	323.8	28.6	362	2	7/8	12	115	100	M24	1	32
300	12	485	381	30.2	431.8	2	7/8	12	120	100	M24	1	50
350	14	535	412.8	33.4	476.3	2	1	12	135	115	M27	1 1/8	64
400	16	595	469.9	35	539.8	2	1	16	135	115	M27	1 1/8	82
450	18	635	533.4	38.1	577.9	2	1 1/8	16	145	125	M30	1 1/4	100
500	20	700	584.2	41.3	635	2	1 1/8	20	160	140	M30	1 1/4	130
600	24	815	692.2	46.1	749.3	2	1 1/4	20	170	150	M33	1 3/8	196

Dimensions of SAF 2205 weld neck flange

Size in mm	Size in Inch	Outer Diameter	Weld Neck OD	Hub OD	Flange Thickness	Weld Face	Welding Neck Length	Bore	RF Height	RF Diameter	PCD
		A	D	C	B	J	E	F	H	G	I
15	1/2	90	21.3	30	9.6	1.6	46	Welding Neck bore is derived from the pipe schedule	2	34.9	60.3
20	3/4	100	26.7	38	11.2	1.6	51		2	42.9	69.9
25	1	110	33.4	49	12.7	1.6	54		2	50.8	79.4
32	1 1/4	115	42.2	59	14.3	1.6	56		2	63.5	88.9
40	1 1/2	125	48.3	65	15.9	1.6	60		2	73	98.4
50	2	150	60.3	78	17.5	1.6	62		2	92.1	120.7
65	2 1/2	180	73	90	20.7	1.6	68		2	104.8	139.7
80	3	190	88.9	108	22.3	1.6	68		2	127	152.4
90	3 1/2	215	101.6	122	22.3	1.6	70		2	139.7	177.8
100	4	230	114.3	135	22.3	1.6	75		2	157.2	190.5
125	5	255	141.3	164	22.3	1.6	87		2	185.7	215.9
150	6	280	168.3	192	23.9	1.6	87		2	215.9	241.3
200	8	345	219.1	246	27	1.6	100		2	269.9	298.5
250	10	405	273	305	28.6	1.6	100		2	323.8	362

Dimensions of UNS S31803 socket weld flange

Size in mm	Size in Inch	Outer Dia.	Hub OD	Flange Thick.	RF Dia.	Flange Length	Socket Depth	RF Height	Socket Bore	PCD	No of Bolts	Machine Bolt Length	Bolt Size UNC	Hole Size	RF Stud Length	ISO Stud Size	Weight in kg
		A	C	B	E	D	G	F	J	H
15	1/2	90	30	9.6	34.9	14	10	2	22.2	60.3	4	50	1/2	5/8	55	M14	0.8
20	3/4	100	38	11.2	42.9	14	11	2	27.7	69.9	4	50	1/2	5/8	65	M14	0.9
25	1	110	49	12.7	50.8	16	13	2	34.5	79.4	4	55	1/2	5/8	65	M14	0.9
32	1 1/4	115	59	14.3	63.5	19	14	2	43.2	88.9	4	55	1/2	5/8	70	M14	1.4
40	1 1/2	125	65	15.9	73	21	16	2	49.5	98.4	4	65	1/2	5/8	70	M14	1.4
50	2	150	78	17.5	92.1	24	17	2	61.9	120.7	4	70	5/8	3/4	85	M16	2.3
65	2 1/2	180	90	20.7	105	27	19	2	74.6	139.7	4	75	5/8	3/4	90	M16	3.2
80	3	190	108	22.3	127	29	21	2	90.7	152.4	4	75	5/8	3/4	90	M16	3.7

Dimensions of ASTM A182 Grade F51 slip on flanges

Size in mm	Size in Inch	Flange Thick.	Outer Dia.	Flange Length	Hub OD	RF Height	RF Dia.	Socket Bore	PCD	Bolt Size UNC	No of Bolts	RF Stud Length	Machine Bolt Length	ISO Stud Size	Hole Size	Weight in kg
		B	A	D	C	F	E	H	G
15	1/2	9.6	90	14	30	2	34.9	22.2	60.3	1/2	4	55	50	M14	5/8	0.8
20	3/4	11.2	100	14	38	2	42.9	27.7	69.9	1/2	4	65	50	M14	5/8	0.9
25	1	12.7	110	16	49	2	50.8	34.5	79.4	1/2	4	65	55	M14	5/8	0.9
32	1 1/4	14.3	115	19	59	2	63.5	43.2	88.9	1/2	4	70	55	M14	5/8	1.4
40	1 1/2	15.9	125	21	65	2	73	49.5	98.4	1/2	4	70	65	M14	5/8	1.4
50	2	17.5	150	24	78	2	92.1	61.9	120.7	5/8	4	85	70	M16	3/4	2.3
65	2 1/2	20.7	180	27	90	2	104.8	74.6	139.7	5/8	4	90	75	M16	3/4	3.2
80	3	22.3	190	29	108	2	127	90.7	152.4	5/8	4	90	75	M16	3/4	3.7
90	3 1/2	22.3	215	30	122	2	139.7	103.4	177.8	5/8	8	90	75	M16	3/4	5
100	4	22.3	230	32	135	2	157.2	116.1	190.5	5/8	8	90	75	M16	3/4	5.9
125	5	22.3	255	35	164	2	185.7	143.8	215.9	3/4	8	95	85	M20	7/8	6.8
150	6	23.9	280	38	192	2	215.9	170.7	241.3	3/4	8	100	85	M20	7/8	8.6
200	8	27	345	43	246	2	269.9	221.5	298.5	3/4	8	110	90	M20	7/8	13.7

Duplex flange pressure rating

Temperature (oF)	300	150	600	400	2500	900	1500
100	740	285	1480	990	6170	2220	3705
600	550	140	1095	730	4560	1640	2735
300	655	230	1315	875	5470	1970	3280
750	505	95	1010	670	4200	1510	2520
400	635	200	1270	845	5280	1900	3170
500	600	170	1200	800	4990	1795	2995
650	535	125	1075	715	4475	1610	2685
800	410	80	825	550	3430	1235	2060
200	675	260	1350	900	5625	2025	3375
850	270	65	535	355	2230	805	1340
900	170	50	345	230	1430	515	860
700	535	110	1065	710	4440	1600	2665
950	105	35	205	140	860	310	515
1000	50	20	105	70	430	155	260

Duplex 2205 flanges chemical composition

C	S	Mo	P	Mn	N	Fe	Cr	Si	Ni
1.0	0.14 - 0.2	22.0 - 23.0	0.02	3.0 - 3.5	0.03	0.03	4.5 - 6.5	2.0	Bal

Duplex ss flanges mechanical properties

Density	Tensile Strength	Yield Strength (0.2%Offset)	Melting Point	Elongation
7.8 g/cm3	Psi - 116000 , MPa - 800	Psi - 80000 , MPa - 550	1350 °C (2460 °F)	15 %

2205 duplex flanges equivalent grade

STANDARD	UNS	WERKSTOFF NR.
Duplex 2205	S31803	1.4462

Duplex F51 weld neck flanges physical proeprties

Grade	Density (kg/m3)	Electrical Resistivity (nΩ.m)	Elastic Modulus (GPa)	Mean Co-eff of Thermal Expansion (μm/m/°C)			Specific Heat 0-100°C ( J/kg.K)	Thermal Conductivity (W/m.K)
				0-100°C	0-315°C	0-538°C		at 100°C	at 500°C
2205	782	850	190	13.7	14.2	-	418	19	-

DSS 2505 flange wall thickness

Nom Pipe Size	OD	Sch 20	Sch 80	Sch 30	Sch 140	Sch 60	Sch 40	Sch 100	STD Wall	Sch 120	Sch 10	Sch 160	EXT Hvy	XX Hvy
½	0.84		0.147				0.109		0.109		0.083	0.188	0.147	0.294
¾	1.05		0.154				0.113		0.113		0.083	0.219	0.154	0.308
1	1.315		0.179				0.133		0.133		0.109	0.25	0.179	0.358
1 ¼	1.66		0.191				0.14		0.14		0.109	0.25	0.191	0.382
1 ½	1.9		0.2				0.145		0.145		0.109	0.281	0.2	0.4
2	2.375		0.218				0.154		0.154		0.109	0.344	0.218	0.436
2 ½	2.875		0.276				0.203		0.203		0.12	0.375	0.276	0.552
3	3.5		0.3				0.216		0.216		0.12	0.438	0.3	0.6
3 ½	4		0.318				0.226		0.226		0.12		0.318	0.636
4	4.5		0.337				0.237		0.237	0.438	0.12	0.531	0.337	0.674
5	5.563		0.375				0.258		0.258	0.5	0.134	0.625	0.375	0.75
6	6.625		0.432				0.28		0.28	0.562	0.134	0.719	0.432	0.864
8	8.625	0.25	0.5	0.277	0.812	0.406	0.322	0.594	0.322	0.719	0.148	0.906	0.5	0.875
10	10.75	0.25	0.594	0.307	1	0.5	0.365	0.719	0.365	0.844	0.165	1.125	0.5	1
12	12.75	0.25	0.688	0.33	1.125	0.562	0.406	0.844	0.375	1	0.18	1.312	0.5	1
14	14	0.312	0.75	0.375	1.25	0.594	0.438	0.938	0.375	1.094	0.25	1.406	0.5
16	16	0.312	0.844	0.375	1.438	0.656	0.5	1.031	0.375	1.219	0.25	1.594	0.5
18	18	0.312	0.938	0.438	1.562	0.75	0.562	1.156	0.375	1.375	0.25	1.781	0.5
20	20	0.375	1.031	0.5	1.75	0.812	0.594	1.281	0.375	1.5	0.25	1.969	0.5
22	22								0.375		0.25		0.5
24	24	0.375	1.219	0.562	2.062	0.969	0.688	1.531	0.375	1.812	0.25	2.344	0.5
26	26								0.375				0.5
30	30	0.5		0.625					0.375		0.312		0.5
36	36	0.5		0.625			0.75		0.375		0.312		0.5
40	40								0.375				0.5
42	42								0.375				0.5
48	48								0.375				0.5

Purchase UNS S31803 flange in Class 150 to 2500, View 2205 duplex socket weld flanges thickness

ASTM A182 F51 Flange Weight Chart

NPS (Nominal Pipe Size)	BLRF (Blind)	NPT (Threaded)	Loose (Lap Joint)	SWRF (Socket Weld)	WNRF (Weld Neck)	SORF (Slip On)
½	2	1	1	2	2	1
¾	2	2	2	2	2	2
1	2	2	2	2	3	2
1¼	3	3	3	3	3	3
1½	4	3	3	3	4	3
2	5	5	5	5	6	5
2½	7	8	8	8	10	8
3	9	9	9	9	11.5	9
3½	13	12	11	11	12	11
4	17	13	13	13	16.5	13
5	20	15	15	15	21	15
6	27	19	19	19	26	19
8	47	30	30	30	42	30
10	70	43	43	43	54	43
12	123	64	64	64	88	64
14	140	90	105	90	114	90
16	180	98	140	98	140	106
18	220	130	160	130	165	130
20	285	165	195	165	197	165
22	355	185	245	185	225	185
24	430	220	275	220	268	220

2205 Duplex Flanges torque

Size in mm	Size in Inch	Thread Type	Bolt Dia.	Torque lbf.ft.	Bolt Stress lb/in2	No. of Bolt	Torque Nm
15	1/2	UNC	½”	22	25,000	4	30
20	3/4	UNC	½”	26	30,000	4	36
35	1	UNC	½”	29	33,000	4	39
40	1 ½	UNC	½”	44	50,000	4	60
50	2	UNC	5/8”	86	50,000	4	117
80	3	UNC	5/8”	86	50,000	4	117
100	4	UNC	5/8”	69	40,000	8	93
150	6	UNC	¾”	137	45,000	8	185
200	8	UNC	¾”	137	45,000	8	185
250	10	UNC	7/8”	194	40,000	12	263
300	12	UNC	7/8”	194	40,000	12	263
350	14	UN8	1”	296	41,000	12	401
400	16	UN8	1”	289	40,000	16	392
450	18	UN8	1 1/8”	421	40,000	16	571
500	20	UN8	1 1/8”	421	40,000	20	571
600	24	UN8	1 ¼”	588	40,000	20	797

SAF 2205 Weld neck Flanges Application

Refineries
Nuclear Power
Marine Applications
Fossil Fuel Power Plants
Power Plants
Paper & Pulp
Ship Building
Oil And Gas Industry

Is duplex steel flanges corrosion resistent?

Duplex 2205 flanges have excellent corrosion resistance. They exhibit significant intergranular corrosion resistance. SAF 2205 blind flanges provide extremely strong resistance to stress corrosion cracking even in chloride and sulphide conditions.

How to select a SAF 2205 Flange Finish to improve sealing

To ensure compatibility with the gasket and a high-quality seal, the finish of the Alloy 2205 flange face needs to be a specified roughness, which is measured as an AARH and determined by the standard used.

There are mainly three types of finish as listed below:

Smooth Finish
Serrated finish
Stock finish

Check manufacturing origin of SAF 2205 RTJ Flanges before buying, View latest price list of UNS S31803 reducing flange

Value added services of 2205 flanges

Annealed
Electroplating
Forging
Pickled
Polish
Centreless Grinding (CG)
Drilling
Threading (As per Guage)
Anodising
Casting
Welding

Benefits of using UNS S31803 socket weld flanges

Increased yield and tensile strength
While not as good as austenitic grades, this grade has good ductility and hardness.
A strong resistance to stress corrosion cracking
Much better corrosion resistance than Type 316.