ASTM A182 Stainless Steel Forged Flanges

Stainless steel forged flanges are disk-shaped parts most commonly used in piping. They are used in pairs and with matching flanges on valves. In pipeline engineering, flanges are mainly used for the connection of pipelines. Add sealing gasket between two flanges, and then tighten with bolt.Flanges with different pressures have different thicknesses and use different bolts.

Stainless Steel Forged Flanges Specification

Product Name	Stainless Steel Forged Flange
Grade	ASTM A182 F304/304L,321,316\316L,317L,347H,309S,310S,904L,S32205,2507,254SMOS,32760,253MA，N08926,etc.
	1.4301,1.4307,1.4541,1.4401,1.4404,1.4571,1.4438,1.4539,1.4547,1.4529,1.4562,1.4410,1.4878,1.4845,1.4828,1.4876,2.4858,2.4819
Specifications	1/2”-60”, (DN15-DN1500) etc.
Pressure	Class 150,300,400,600,900,1500,2500; PN6-PN420
Standard	ANSI/ASME B16.5, ANSI/ASME B16.47, EN 1092-1, DIN, JIS, BS
Inspection	ISO,SGS,BV and so on.
Packaging	1. cases packed in wooden cases2. paper packaging3. plastic packing4. foam packaging Packaging according to customer requirements or products

Pressure Rating of Forged Flange

Sizes according to ASME B16.5

Class 150(lb) up to 24″

Class 300(lb) up to 24″

Class 600(lb) up to 24″

Class 900(lb) up to 14″

Class 1500(lb) up to 24″

Class 2500(lb) up to 12″

Sizes according to DIN – EN1092-1

PN2.5/PN06/PN10 up to DN800

PN16/PN25/PN40 up to DN600

PN63/PN100 up to DN500

PN160/PN250 up to DN300

PN320/PN400 up to DN200

API 6A Flanges

2000 PSI up to 20000 PSI

JIS B2220

5K up to 63K

What is ASTM A182 Standard

ASTM A182 standard specification is for forged and rolled alloy and stainless steel pipe flanges, fittings, valves and parts for high temperature service. Common grades of alloy steel is Grade F5, F9, F11, F22, stainless steel F304/L and F316/L.

ASTM A182 Stainless Steel Equivalent Material Grade

Austenitic

F304/304L	1.4301/1.4307	UNS S30403/S30400
F304H	1.4948	UNS S30409
F321/F321H	1.4541/1.4878	UNS S32100/S32109
F316/F316L	1.4401/1.4404	UNS S31603/S31600
F316L (MO+)	1.4435	UNS S31635
F316TI	1.4571	UNS S31635
F904L	1.4539	UNS N08904
F44	1.4547	UNS S31254
F310/F310S	1.4841/1.4845	UNS S31000/S31008
F347 (H)	1.4550	UNS S34700/S34709
F317L	1.4438	UNS S31703
F316H	1.4919	UNS S31609
F304/304L	1.4306	UNS S30400

Duplex

F51/F60	1.4462	UNS S31803
F53	1.4410	UNS S32750
F55	1.4501	UNS S32760

ASTM A182 SS Forged Flanges Material Properties

Chemical Composition

CHEMICAL	LIMITS	C	Mn	P	S	Si	Ni	Cr	Mo	N	Cu
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
ASTM A182 F44	MIN						17.50	19.50	6.00		0.50
	MAX	0.02	1.00	0.030	0.010	0.80	18.50	20.50	6.50		1.00
ASTM A182 F51	MIN						4.50	21.00	2.50	0.08
	MAX	0.03	2.00	0.030	0.020	1.00	6.50	23.00	3.50	0.20
ASTM A182 F53	MIN						6.00	24.00	3.00	0.24
	MAX	0.03	1.20	0.035	0.020	0.80	8.00	26.00	5.00	0.32	0.5

Mechanical Properties

MATERIAL	ASTM A182 F304	ASTM A182 F316	ASTM A182 F44	ASTM A182 F51	ASTM A182 F53
T.S (MPA)	515 min	515 min	650 min	620 min	800 min
Y.S (MPA)	205 min	205 min	300 min	450 min	550 min
EL %	30 min	30 min	35 min	35 min	25 min
R/A %	50 min	50 min	50 min	45 min	15 min
HARDNESS					310 max

Advantages

Durable connection.

Leakage prevention.

Ease of installation.

Testing of the pipe and joints are easier.

Suitable for high pressure and high heat applications.

December 10, 2024