Name: Stainless Steel 304L Flanges
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Stainless Steel 304L Flanges

Product Introduction

What Is Stainless Steel 304L Flanges

304L is a versatile stainless steel widely used in the production of equipment and components that require good comprehensive performance (corrosion resistance and formability).

Stainless steel 304/ 304L flanges may be manufactured in accordance with ASME B16.5 or ASME B16.47 with nominal composition of 18Cr-8Ni. The letter “L” denotes low-carbon version of the 304 stainless steel. The flanges may be made from forgings, castings, or plates covering various types and classes of ASME B16.5 and ASME B16.47 (both Series A and Series B). Stainless steel 304/ 304L flanges of ASME B16.5 are available in Classes 150, 300, 400, 600, 900, 1500, 2500; that of ASME B16.47 Series A are available in Classes 150, 300, 400, 600, 900; that of ASME B16.47 Series B are available in Classes 75, 150, 300, 400, 600, 900.

Manufacture & Heat Treatment

Stainless steel 304/ 304L flanges made of ASTM A182 F304/ F304L forgings shall be solution treated at the temperature no less than 1900°F [1040°C] with subsequent quenching treatment to cool it down to below 500°F [260°C] rapidly. SS 304/ 304L flanges made of ASTM A351 CF8/ CF3 castings shall be solution treated at the minimum temperature of 1900°F [1040°C] followed by a quench in water. Flanges without hub (blind, S/O plate) may be manufactured directly from stainless steel plates of ASTM A240 Gr. 304 or 304L, which shall be solution annealed.

Pressure-Temperature Ratings

Both ASME B16.5 and ASME B16.47 have consistently presented the pressure-temperature ratings for stainless 304/ 304L flanges in various material grades. Based on the pressure-temperature ratings, diverse stainless steel 304 and 304L flange materials can be classified into two groups: Group 2.1 – including ASTM A182 Gr. F304, ASTM A351 Gr. CF3 & CF8, ASTM A240 Gr.304; Group 2.3 – including ASTM A182 F304L, ASTM A240 Gr. 304L.

Flange Type

Double phase steel flange, stainless steel flange, American standard with neck butt welding flange, American standard with neck flat welding flange, loose sleeve flat welding flange, movable flange, neck butt welding convex concave surface flange, neck flat welding flange, ring connection butt welding flange, protruding surface flange, reducer flange, butt welding flange, flat welding flange, socket welding flange, concave convex surface flange, butt welding ring loose sleeve flange, flange cover, blind plate, 8-shaped blind plate.

Product	Stainless Steel 304L Flanges
Specifications	10-1220mm, (3/8"-100") etc.
Thickness	0.3-150mm, (SCH10-XXS)
Pressure	PN0.5 - PN500
Standard	ASTM, AISI, JIS, GB, DIN, EN, etc
Surface	BA, 2B, NO.1, NO.4, 4K, HL, 8K, etc
Certification	Support third-party detection: ISO, SGS, BV, etc
Technique	Cold Rolled / Hot Rolled
Edge	Mill Edge / Slit Edge
Main Market	Asia, Europe, South America, North America, Middle East, Africa, Southeast Asia, Oceania, etc.
Brand Name	TISCO
Supply Ability	5000 Tons per Month
Packaging & Delivery	In bundle,plastic bags,thin film,wooden pallet,standard seaworthy export packing or as customer demands 20ft GP: 5898mm (Length)x2352mm(Width)x2393mm(High) 24-26CBM 40ft GP: 12032mm (Length)x2352mm(Width)x2393mm(High) 54CBM 40ft HC: 12032mm (Length)x2352mm(Width)x2698mm(High) 68CBM

	EN	ASTM/UNS	C	N	Cr	Ni	Mo	COMPONENT
1	1.4301	304	0.04		18.1	8.3
2	1.4307	304L	0.02		18.1	8.3
3	1.4541	321	0.04		17.3	9.1		Ti0.24
4	1.4550	347	0.05		17.5	9.5		Nb0.012
5	1.4401	316,S31608	0.04		17.2	10.2	2.1
6	1.4404	316L,S31603	0.02		17.2	10.2	2.1
7	1.4406	316LN	0.02	0.14	17.2	10.3	2.1
8	1.4429	S31653	0.02	0.14	17.3	12.5	2.6
9	1.4571	316Ti,S31635	0.04		17	10.6	2.1	Ti0.30
10	1.4438	317L,S31703	0.02		18.2	13.5	3.1
11	1.4439	317LMN	0.02	0.14	17.8	12.6	4.1
12	1.4435	316LMOD,724L	0.02	0.06	17.3	13.2	2.6
13	1.4539	904L,N08904	0.01		20	25	4.3	1.5Cu
14	1.4547	S31254,254SMO	0.01	0.02	20	18	6.1	Cu 0.8-1.0
15	1.4529	N08926,Alloy25-6mo	0.02	0.15	20	25	6.5	1.0Cu
16	1.4652	S32654,654SMO	0.01	0.45	23	21	7	Mn2-4-Cu 0.3-0.6
17	1.4162	S32101,LDX2101	0.03	0.22	21.5	1.5	0.3	Mn 4-6-Cu 0.1-0.8
18	1.4362	S32304,SAF2304	0.02	0.1	23	4.8	0.3
19	1.4462	2205,S32205,S31803	0.02	0.16	22.5	5.7	3.0
20	1.4410	S32750,SAF2507	0.02	0.27	25	7	4
21	1.4501	S32760	0.02	0.27	25.4	6.9	3.5	W 0.5-1.0-Cu0.5-1.0
22	1.4948	304H	0.05		18.1	8.3
23	1.4878	321H,S32169,S32109	0.05		17.3	9		TI0.2-0.7
24	1.4818	S30415,153MA	0.15	0.05	18.5	9.5		Si1-2-Ce 0.03-0.08
25	1.4833	309S,S30908	0.06		22.8	12.6
26	1.4835	30815,253MA	0.09	0.17	21	11		Si1.4-2.0Ce 0.03-0.08
27	1.4845	310S,S31008	0.05		25	20
28	1.4542	630	0.07		16	4.8		Cu3.0-5.0-Nb0.15-0.45

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