ASTM A182 F316 Stainless Steel Blind Flanges

ASTM A182 F316 blind flange is mainly used in piping systems, especially when the process needs to be changed or repaired. You can use it not only as an end cover for the piping system, but also to isolate and close a certain part of the piping system.

We manufacture it from various materials depending on the application requirements, including carbon steel, stainless steel, alloy steel, and nickel alloys, which provide resistance to high temperatures and corrosive environments. Industries widely use F316 blind flanges in pipeline systems within petroleum, chemical, food, and medicine.

Specification of Blind Flange

Sealing Face	RF, FF, FTJ
Size Range	1/2” – 48” / DN15 – DN1200
Pressure Rating	Class 150, 300, 600, 900, 1500, 2500lb
Standard	ASME / ANSI B16.5, ASME B16.47 Series A/B
Carbon Steel	ASTM A105 / A105N
Low Temp Carbon Steel	ASTM A350 LF2/LF3
Pipeline Steel	ASTM A694 F42 / 46 / 56 / 60 / 65
Alloy Steel	ASTM A182 F11 / 12 / 5 / 9 / 91 / 92
Stainless Steel	ASTM A182 F304/304L/304H, 316/316L, 310S, 317,347,904L
Duplex Stainless Steel	ASTM A182 F51, F53, F44

ASTM A182 F316 Chemical Composition

CHEMICAL	LIMITS	C	Mn	P	S	Si	Ni	Cr	Mo	N
ASTM A182 F316	MIN						10.0	16.0	2.00
	MAX	0.08	2.00	0.045	0.030	1.00	14.0	18.0	3.00	0.10

ASTM A182 F316 Mechanical Property

MATERIAL	T.S (MPA)	Y.S (MPA)	EL %	R/A %
ASTM A182 F316	515 min	205 min	30 min	50 min

Equivalent Grades for ASTM A182 Grade F316 BL

STANDARD	WERKSTOFF NR.	UNS	JIS	BS	GOST	AFNOR	EN
SS 316	1.4401 / 1.4436	S31600	SUS 316	316S31 / 316S33	–	Z7CND17‐11‐02	X5CrNiMo17-12-2 / X3CrNiMo17-13-3

Key Features & Benefits

Superior Corrosion Resistance — Molybdenum improves resistance to chlorides, acidic environments.

Pressure Sealing — Ideal for terminating pipes or isolating process segments.

High Strength — Suitable for high-pressure applications.

Easy Maintenance Access — Can be unbolted to inspect or clean pipe systems.

Class 150 lb Blind Flange Dimensions

NPS	A	C	G	H	I	J	W
	inch			No. of holes	inch		kg/pc
	mm				mm
1/2	3.500	0.440	1.380	4	0.620	2.380	0.42
	88.90	11.20	35.10		15.70	60.45
3/4	3.880	0.500	1.690	4	0.620	2.750	0.61
	98.60	12.70	42.90		15.70	69.85
1	4.250	0.560	2.000	4	0.620	3.120	0.86
	108.0	14.20	50.80		15.70	79.25
1-1/4	4.620	0.620	2.500	4	0.620	3.500	1.17
	117.3	15.70	63.50		15.70	88.90
1-1/2	5.000	0.690	2.880	4	0.620	3.880	1.53
	127.0	17.50	73.15		15.70	98.60
2	6.000	0.750	3.620	4	0.750	4.750	2.42
	152.4	19.10	91.90		19.10	120.7
2-1/2	7.000	0.880	4.120	4	0.750	5.500	3.94
	177.8	22.40	104.6		19.10	139.7
3	7.500	0.940	5.000	4	0.750	6.000	4.93
	190.5	23.90	127.0		19.10	152.4
3-1/2	8.500	0.940	5.500	8	0.750	7.000	6.17
	215.9	23.90	139.7		19.10	177.8
4	9.000	0.940	6.190	8	0.750	7.500	7.00
	228.6	23.90	157.2		19.10	190.5
5	10.00	0.940	7.310	8	0.880	8.500	8.63
	254.0	23.90	185.7		22.40	215.9
6	11.00	1.000	8.500	8	0.880	9.500	11.3
	279.4	25.40	215.9		22.40	241.3
8	13.50	1.120	10.62	8	0.880	11.75	19.6
	342.9	28.40	269.7		22.40	298.5
10	16.00	1.190	12.75	12	1.000	14.25	28.8
	406.4	30.20	323.9		25.40	362.0
12	19.00	1.250	15.00	12	1.000	17.00	43.2
	482.6	31.75	381.0		25.40	431.8
14	21.00	1.380	16.25	12	1.120	18.75	58.1
	533.4	35.10	412.8		28.40	476.3
16	23.50	1.440	18.50	16	1.120	21.25	76.0
	596.9	36.60	469.9		28.40	539.8
18	25.00	1.560	21.00	16	1.250	22.75	93.7
	635.0	39.60	533.4		31.75	577.9
20	27.50	1.690	23.00	20	1.250	25.00	122
	698.5	42.90	584.2		31.75	635.0
24	32.00	1.880	27.25	20	1.380	29.50	185
	812.8	47.80	692.2		35.10	749.3

A182 F316 Blind Flange Pressure Rating Table

Table Il-2-2.2 Pressure-Temperature Ratings for Group 2.2 Materials
Nominal Designation		Forgings		Castings		Plates
16Cr-12Ni-2Mo		A182 Gr.F316(1)		A351 Gr.CF3M(2)		A240 Gr.316(1)
16Cr-12Ni-2Mo		A182 Gr.F316H		A351 Gr.CF8M (1)		A240 Gr.316H
Working Pressures by Classes,psig
Class
Temp.,F	150	300	400	600	900	1500	2500
-20 to 100	275	720	960	1440	2160	3600	6000
200	235	620	825	1240	1860	3095	5160
300	215	560	745	1120	1680	2795	4660
400	195	515	685	1.025	1540	2570	4280
500	170	480	635	955	1435	2390	3980
600	140	450	600	900	1355	2255	3760
650	125	440	590	885	1325	2210	3680
700	110	435	580	870	1305	2170	3620
750	95	425	570	855	1280	2135	3560
800	80	420	565	845	1265	2110	3520
850	65	420	555	835	1255	2090	3480
900	50	415	555	830	1245	2075	3460
950	35	385	515	775	1160	1930	3220
1000	20	365	485	725	1090	1820	3030
1050		360	480	720	1080	1800	3000
1100		305	405	610	915	1525	2545
1150		235	315	475	710	1185	1970
1200		185	245	370	555	925	1545
1250		145	195	295	440	735	1230
1300		115	155	235	350	585	970
1350		95	130	190	290	480	800
1400		75	100	150	225	380	630
1450		60	80	115	175	290	485
1500		40	55	85	125	205	345

Comparison of F304 and F316 Materials

304 VS 316 Chemical Composition

CHEMICAL	LIMITS	C	Mn	P	S	Si	Ni	Cr	Mo	N
ASTM A182 F304	MIN						8.0	18.0
	MAX	0.08	2.00	0.045	0.030	1.00	11.0	20.0		0.10
ASTM A182 F316	MIN						10.0	16.0	2.00
	MAX	0.08	2.00	0.045	0.030	1.00	14.0	18.0	3.00	0.01

In an environment containing chloride ions, the corrosion resistance of A182 F316 blind flange is significantly better than that of F304. Since F304 does not contain molybdenum, its passivation film is easily destroyed by chloride ions, resulting in corrosion. The molybdenum element in F316 enhances the stability of the passivation film and can effectively resist the corrosion of chloride ions.

304 VS 316 Mechanical Property

MATERIAL	T.S (MPA)	Y.S (MPA)	EL %	R/A %
ASTM A182 F304	515 min	205 min	30 min	50 min
ASTM A182 F316	515 min	205 min	30 min	50 min

In low temperature environment, A182 F316 blind flange has better toughness than F304. This is because the higher nickel content of F316 helps maintain the stability of its austenite structure and prevents embrittlement at low temperatures.

Typical Applications

Offshore and Marine Piping

Chemical Processing Plants

Water Treatment Systems

Pharmaceutical and Food Processing

Heat Exchangers, Pumps, and Valve Ends

ASTM A182 F316 Blind Flange Exported Countries

We Export ASTM A182 F316 Blind Flange to Saudi Arabia, United Arab Emirates, Qatar, Bahrain, Oman, Kuwait, Turkey, Egypt, Yemen , Syria, Jordan, Cyprus, Singapore, Malaysia, Indonesia, Thailand, Vietnam, South Korea, Japan, Sri Lanka, Maldives, Bangladesh, Cambodia, Argentina, Bolivia, Brazil, Venezuela, Colombia, Ecuador, Guyana, Paraguay, Uruguay, United States Of America, Canada, Mexico, Panama, Jamaica, Bahamas, Denmark, Norway, Germany, France,Italy, United Kingdom, Spain, Belgium, Greece, Czech Republic, Portugal, Hungary, Albania, Austria, Finland, Ireland, Croatia, Malta, Nigeria, Algeria, Angola, South Africa, Libya, Egypt, Sudan,  Europe, Africa, Asia, North America, South America, Middle East.etc

June 4, 2025