Stainless Steel 304 Products

Stainless Steel 304 Flanges

Q: Q1. What is the main difference between SS 304 and SS 316 flanges?

A: SS 316 contains molybdenum (2-3%), which improves its resistance to chlorides and harsh chemicals, making it better suited for marine or chemical service. SS 304 is cost-effective and ideal for general applications.

Q: Q2. Are SS 304 flanges suitable for high-temperature service?

A: Yes, SS 304 performs well up to 870°C in intermittent service and up to 925°C in continuous service. However, for long-term use above 425–860°C, SS 304L is recommended to prevent sensitization.

Q: Q3. Do you offer SS 304 flanges in all pressure classes?

A: Absolutely. We supply SS 304 Flanges in all standard pressure ratings from Class 150 to Class 2500.

Q: Q4. Is Stainless Steel 304 food-grade?

A: Yes, it’s widely used in food, dairy, and beverage industries due to its hygienic, non-reactive surface that doesn’t alter taste or promote bacteria.

Q: Q5. What is the expected service life of SS 304 flanges?

A: Depending on the application, SS 304 flanges can last over 20 years with proper maintenance and within design parameters.

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304 SS Flanges Table of Content

SS 304 Flanges Manufacturer & Supplier in Mumbai, India
SS 304 Flanges Specification
Stainless Steel 304 Flanges Chemical Composition
304 Stainless Steel Flanges Mechanical Properties
304 Stainless Steel Flanges Physical Properties
Stainless Steel 304 Flanges Equivalent Grades
SS 304 Flanges Dimensions
304 Stainless Steel Flanges Weight Chart
Stainless Steel 304 Flanges Pressure Rating
Stainless Steel 304 Flanges Size Chart
Types of Stainless Steel 304 Flanges Offered
304 Stainless Steel Flanges Application
FAQs

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Stainless Steel 304 Flanges Manufacturer & Supplier in Mumbai, India

SS 304 Slip On Flanges

A182 F304 SORF Flange

SS 304 Weld Neck Flange

Our speciality at Lakshya Steel is producing and distributing premium Stainless Steel 304 Flanges. Excellent strength and corrosion resistance abound from these flanges, which are composed of austenitic stainless steel with 18% chromium and 8% nickel. SS 304 flanges are appropriate for many different industrial uses since they have a minimum tensile strength of 515 MPa and a yield strength of 205 MPa. They can thus handle general corrosive situations.

Our selection of SS 304 flanges include several ASTM A182 F304 Slip-On Raised Face (SORF) flanges as well as Weld Neck Raised Face (WNRF) flanges. While the raised face gives extra surface for secure welding or bolting, the slip-on flanges are perfect for use with seamless pipes since they offer exact couplings. Conversely, the WNRF flanges fit for high-pressure uses since its welded neck guarantees a tight hold.

ASME SA182 SS 304 Blind Flanges, meant to terminate pipes at a designated location, are available here. Ideal for usage in high-temperature operations including heat exchangers, boilers, and condenser components, these flanges are also heat resistant and can run at temperatures as high as 870°C.

We provide DIN 1.4307 Screwed Flanges and more along with a variety of 304 Stainless Steel flanges in diameters ranging from ½ inch to 48 inches. Whether your needs call for SS 304 flanges for general service, thermal applications, or industrial pipes, Lakshya Steel has a whole range to fit your particular needs.

Please contact us to discuss your project needs or for further information on our stainless steel products and stainless steel 304 products including the most recent SS 304 flange price list.

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Stainless Steel 304 Flanges Specification

Stainless Steel 304 Flanges Specification
Specifications	ASTM A182, A240 / ASME SA182, SA240
Standards	ANSI Flanges, ASME Flanges, DIN Flanges, EN Flanges, BS Flanges, JIS Flanges, AWWA Flanges etc.
Dimensions	ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, etc
Size Range	1/2″ (15 NB) to 48″ (1200NB)
Pressure / Class	150#, 300#, 600#, 900#, 1500# & 2500#.
Flange Face Typee	Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ)

Stainless Steel 304 Flanges Chemical Composition

Grade	C	Mn	Si	P	S	Cr	Mo	Ni	N
SS 304	0.08 max	2 max	0.75 max	0.045 max	0.030 max	18 – 20	–	8 – 11	–

304 Stainless Steel Flanges Mechanical Properties

Grade	Tensile Strength (MPa) min	Yield Strength 0.2% Proof (MPa) min	Elongation (% in 50mm) min	Hardness
				Rockwell B (HR B) max	Brinell (HB) max
304	515	205	40	92	201

304 Stainless Steel Flanges Physical Properties

Grade	Density (kg/m3)	Elastic Modulus (GPa)	Mean Coefficient of Thermal Expansion (μm/m/°C)			Thermal Conductivity (W/m.K)		Specific Heat 0-100°C (J/kg.K)	Electrical Resistivity (nΩ.m)
			0-100°C	0-315°C	0-538°C	at 100°C	at 500°C
304	8000	193	17.2	17.8	18.4	16.2	21.5	500	720

Stainless Steel 304 Flanges Equivalent Grades

STANDARD	WERKSTOFF NR.	UNS	JIS	BS	GOST	AFNOR	EN
SS 304	1.4301	S30400	SUS 304	304S31	08Х18Н10	Z7CN18‐09	X5CrNi18-10

SS 304 Flanges Dimensions

Standard	Class	Diameter	Bolt Circle Diameter	Number of Bolts	Bolt Size	Diameter of Bolt Hole
AS4087	PN14	95	67	4	M12	14
AS 2129 Flanges	Table C	95	67	4	13	14
	Table D	95	67	4	13	14
	Table E	95	67	4	13	14
	Table F	95	67	4	13	14
	Table H	114	83	4	16	17
	Table J	114	83	4	16	17
ANSI B16.5	ANSI 150	89	60	4	13	16
	ANSI 300	95	67	4	13	16
	ANSI 600	95	67	4	13	16
	ANSI 900	121	83	4	19	22
	ANSI 1500	121	83	4	19	22
ISO 7005 (DIN) Flanges	PN6	80	55	4	M10	11
	PN10	95	65	4	M12	14
	PN16	95	65	4	M12	14
	PN20	90	60.5	4	M14	16
	PN25	95	65	4	M12	14
	PN40	95	65	4	M12	14

304 Stainless Steel Flanges Weight Chart

Pipe Normal Diam.		O.D. Flange	Thk. Of Flange Min	Diam. of Hub	Diameter of Raised Face	Length Hub.Y	Thread Length	Diam. of Bolt Circle	Diam. of Bolt Holes	Number of Bolts	Diam. of Bolts (inch)	KG	LB
inch	dn	O	C	X	G	Y	T	BC	BH	BN	BD
1/2″	15	89.00	11.20	30.20	35.10	15.70	15.70	60.50	15.80	4	1/2″	0.4	0.9
3/4″	20	98.50	12.70	38.10	42.90	15.70	15.70	69.90	15.80	4	1/2″	0.7	1.5
1″	25	108.00	14.20	49.30	50.80	17.50	17.50	79.30	15.80	4	1/2″	0.8	1.8
1-1/4″	32	117.50	15.70	58.70	63.50	20.60	20.60	88.90	15.80	4	1/2″	1.2	2.6
1-1/2″	40	127.00	17.50	65.00	73.20	22.40	22.40	98.60	15.80	4	1/2″	1.5	3.3
2″	50	152.50	19.10	77.70	91.90	25.40	25.40	120.70	19.10	4	5/8″	2.3	5.1
2-1/2″	65	178.00	22.40	90.40	104.60	28.40	28.40	139.70	19.10	4	5/8″	3.7	8.1
3″	80	190.50	23.90	108.00	127.00	30.20	30.20	152.40	19.10	4	5/8″	4.1	9
3-1/2″	90	216.00	23.90	122.20	139.70	31.80	31.80	177.80	19.10	8	5/8″	5.1	11.2
4″	100	228.50	23.90	134.90	157.20	33.30	33.30	190.50	19.10	8	5/8″	5.9	13
5″	125	254.00	23.90	163.60	185.70	36.60	36.60	215.90	22.40	8	3/4″	7	15.4
6″	150	279.50	25.40	192.00	215.90	39.60	39.60	241.30	22.40	8	3/4″	8.4	18.5
8″	200	343.00	28.40	246.10	269.70	44.50	44.50	298.50	22.40	8	3/4″	13	28.6
10″	250	406.50	30.20	304.80	323.90	49.30	49.30	362.00	25.40	12	7/8″	18	39.5
12″	300	482.50	31.80	365.30	381.00	55.60	55.60	431.80	25.40	12	7/8″	29	64
14″	350	533.50	35.10	400.10	412.80	57.20	57.20	476.30	28.50	12	1″	39	86
16″	400	597.00	36.60	457.20	469.90	63.50	63.50	539.80	28.50	16	1″	47	103
18″	450	635.00	39.60	505.00	533.40	68.30	68.30	577.90	31.80	16	1 1/8″	57	126
20″	500	698.50	42.90	558.80	584.20	73.20	73.20	635.00	31.80	20	1 1/8″	76	167
24″	600	813.00	47.80	663.40	692.20	82.60	82.60	749.30	35.10	20	1 1/4″	97	214

Stainless Steel 304 Flanges Pressure Rating

ANSI/ASME B16.34	PRESSURE RATING CHART
Temperature °F	150#	300#	400#	600#	900#	1500#	2500#
-20 to 100	275	720	960	1440	2160	3600	6000
200	230	600	800	1200	1800	3000	5000
300	205	540	720	1080	1620	2700	4500
400	190	495	660	995	1490	2485	4140
500	170	465	620	930	1395	2330	3880
600	140	435	580	875	1310	2185	3640
650	125	430	575	860	1290	2150	3580
700	110	425	565	850	1275	2125	3540
750	95	415	555	830	1245	2075	3460
800	80	405	540	805	1210	2015	3360
850	65	395	530	790	1190	1980	3300
900	50	390	520	780	1165	1945	3240
950	35	380	510	765	1145	1910	3180
1000	20	320	430	640	965	1605	2675
1050	20	310	410	615	925	1545	2570
1100	20	255	345	515	770	1285	2145
1150	20	200	265	400	595	995	1655
1200	20	155	205	310	465	770	1285
1250	20	115	150	225	340	565	945
1300	20	85	115	170	255	430	715
1350	20	60	80	125	185	310	515
1400	20	50	65	95	145	240	400
1450	15	35	45	70	105	170	285
1500	10	25	35	55	80	135	230

Stainless Steel 304 Flanges Size Chart

Nominal Pipe Size	Outside Diameter of Flanges	Thickness of Flanges	Diameter of Raised Face	Diameter of Hub at Base	Length Thru Hub			Diameter or Bore		Diameter of Hub at Bevel	Radius of Fillet	Depth of Socket
	Outside Diameter of Flanges	Thickness of Flanges	Diameter of Raised Face	Diameter of Hub at Base	Welding Neck	Slip-On Threaded Socket	Lap Joint	Slip-on Socket	Lap Joint	Diameter of Hub at Bevel	Radius of Fillet	Depth of Socket
	O	Q	R	X	Y	Y	Y	W	B	H	r	Z
1/2	3-1/2	7/16	1-3/8	1-3/16	1-7/8	5/8	5/8	.88	.90	.84	1/8	3/8
3/4	3-7/8	1/2	1-11/16	1-1/2	2-1/16	5/8	5/8	1.09	1.11	1.05	1/8	7/16
1	4-1/4	9/16	2	1-15/16	2-3/16	11/16	11/16	1.36	1.38	1.32	1/8	1/2
1-1/4	4-5/8	5/8	2-1/2	2-5/16	2-1/4	13/16	13/16	1.70	1.72	1.66	3/16	9/16
1-1/2	5	11/16	2-7/8	2-9/16	2-7/16	7/8	7/8	1.95	1.97	1.90	1/4	5/8
2	6	3/4	3-5/8	3-1/16	2-1/2	1	1	2.44	2.46	2.38	5/16	11/16
2-1/2	7	7/8	4-1/8	3-9/16	2-3/4	1-1/8	1-1/8	2.94	2.97	2.88	5/16	3/4
3	7-1/2	15/16	5	4-1/4	2-3/4	1-3/16	1-3/16	3.57	3.60	3.50	3/8	13/16
3-1/2	8-1/2	15/16	5-1/2	4-13/16	2-13/16	1-1/4	1-1/4	4.07	4.10	4.00	3/8	7/8
4	9	15/16	6-3/16	5-5/16	3	1-5/16	1-5/16	4.57	4.60	4.50	7/16	15/16
5	10	15/16	7.5/16	6-7/16	3-1/2	1-7/16	1-7/16	5.66	5.69	5.56	7/16	15/16
6	11	1	8-1/2	7-9/16	3-1/2	1-9/16	1-9/16	6.72	6.75	6.63	1/2	1-1/16
8	13-1/2	1-1/8	10-5/8	9-11/16	4	1-3/4	1-3/4	8.72	8.75	8.63	1/2	1-1/4
10	16	1-3/16	12-3/4	12	4	1-15/16	1-15/16	10.88	10.92	10.75	1/2	1-5/16
12	19	1-1/4	15	14-3/8	4-1/2	2-3/16	2-3/16	12.88	12.92	12.75	1/2	1-9/16
14	21	1-3/8	16-1/4	15-3/4	5	2-1/4	3-1/8	14.14	14.18	14.00	1/2	1-5/8
16	23-1/2	1-7/16	18-1/2	18	5	2-1/2	3-7/16	16.16	16.19	16.00	1/2	1-3/4
18	25	1-9/16	21	19-7/8	5-1/2	2-11/16	3-13/16	18.18	18.20	18.00	1/2	1-15/16
20	27-1/2	1-11/16	23	22	5-11/16	2-7/8	4-1/16	20.20	20.25	20.00	1/2	2-1/8
24	32	1-7/8	27-1/4	26-1/8	6	3-1/4	4-3/8	24.25	24.25	24.00	1/2	2-1/2

Types of Stainless Steel 304 Flanges Offered

Stainless Steel 304 Flanges	Stainless Steel 304 EN 1092-1 Flanges
Stainless Steel 304 BS 4504 Flanges	Stainless Steel 304 Forged Flanges
Stainless Steel UNS S30400 Flanges	Stainless Steel 304 Slip on Flanges
SS 304 Flat Flange Suppliers	ANSI 304 Stainless Steel Blind Flange
SS 304 Weld Neck Flanges Dealer	SS 304 Socket weld Flanges Exporter
SS 304 Long Weld Neck Flanges Stockholder	Steel 304 Threaded Flanges Distributors
Stainless Steel SUS 304 Reducing Flanges	SS 304 Ring Type Joint Flanges Manufacturer
Stainless Steel DIN 1.4301 Orifice Flange	Stainless Steel BS 304S31 Spectacle Blind Flanges
Stainless Steel 304 WNRF Flange	Stainless 304 SORF Flanges
ANSI B16.5 SS 304 RTJ Flanges	SS 304 Screwed Flanges Stockist
ASTM A182 SS 304 Lap Joint Flanges	ASME SA182 SS 304 BLRF Flange
Stainless Steel 304 Raised Face Flanges	304 SS Nipoflange
A182 SS 304 Square Flanges	ASME SA182M SS 304 SWRF Flange
Steel 304 Tongue & Groove Flanges	SS 304 Male & Female Flanges
Stainless Steel 304 DIN Flanges	SS 304 ASME B16.5 Flanges

304 Stainless Steel Flanges Application

304 Stainless Steel Flanges are widely used in various applications, including:

Petrochemical and chemical processing
Food and beverage industry
Oil and gas pipelines
Heat exchangers
Water treatment plants
Power generation
Pharmaceutical equipment
Marine and offshore platforms.

Why Choose Lakshya Steel?

At Lakshya Steel, we take great satisfaction in providing excellent Stainless Steel 304 Flanges made from premium raw materials obtained from reputable steel mills, so guaranteeing complete traceability and outstanding performance. While our custom engineering skills let us create flanges perfectly to your drawings or non-standard specifications, our modern CNC machining procedures guarantee great dimensional accuracy and a clean surface finish. Our strong inventory of ASTM A182 F304 Slip-On, Weld Neck, Blind, and Screwed Flanges spans ½’s to 48’s, so allowing us to accommodate both large-scale industrial projects and immediate needs. Perfect mechanical strength (≥515 MPa tensile strength) and corrosion and heat resistance—ideal for a variety of uses including pipelines, heat exchangers, boilers, and food-grade systems—showcase our SS 304 flanges. Supported by EN 10204 3.1 Mill Test Certificates, worldwide shipping, and affordable pricing, Lakshya Steel is your trusted friend for dependable, timely, reasonably priced stainless steel solutions. Get in touch to find out more about our products or ask for the most recent SS 304 flange price list catered to your project requirements.

Frequently Asked Questions (FAQs)

What is the main difference between SS 304 and SS 316 flanges?

Molybdenum (2–3%) included in SS 316 increases its resistance to strong chemicals and chlorides, therefore enhancing its suitability for marine or chemical service. SS 304 is perfect for general use and reasonably priced.

Are SS 304 flanges suitable for high-temperature service?

Indeed, in intermittent service SS 304 performs well up to 870°C and in continuous service it performs up to 925°C. SS 304L is advised to prevent sensitization, though, for long-term use above 425–860°C.

Do you offer SS 304 flanges in all pressure classes?

Absolutely. We supply SS 304 Flanges in all standard pressure ratings from Class 150 to Class 2500.

Is Stainless Steel 304 food-grade?

Yes, it’s widely used in food, dairy, and beverage industries due to its hygienic, non-reactive surface that doesn’t alter taste or promote bacteria.

What is the expected service life of SS 304 flanges?

Depending on the application, SS 304 flanges can last over 20 years with proper maintenance and within design parameters.

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