304H Stainless Steel Pipe

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Detail

304H STAINLESS STEEL PIPES AND TUBES

Description:

304H is a modification of the most widely utilized "18-8" chromium-nickel austenitic stainless steel. The carbon content is controlled in the range of 0.04-0.10% for increased strength at temperatures above 800°F (427°C).

Alloy 304H (UNS S30409) is a modification of the most widely utilized "18-8" chromium-nickel austenitic stainless steel. The carbon content is controlled in the range of 0.04-0.10% for increased strength at temperatures above 800°F (427°C). It is an economical and versatile corrosion resistant alloy suitable for a wide range of general purpose applications.

It is common practice for 304H to be dual certified as 304 and 304H. The high carbon chemistry of 304H enables 304 to meet the Mechanical Properties and grain size requirements of 304H.

Alloy 304/304H has general corrosion resistance similar to 304/304L. It resists atmospheric corrosion, as well as, moderately oxidizing and reducing environments. However, because of its high carbon content, Alloy 304/304H is subject to carbide precipitation in the heat affected zone of welds.

Alloy 304/304H is non-magnetic in the annealed condition, but can become slightly magnetic as a result of cold working or welding. It can be easily welded and processed by standard shop fabrication practices.

Stainless Steel 304H Welded Pipes is commonly found in the oil refining, gas and chemical industry and is used in industrial boilers, pressure vessels, heat exchangers, pipelines and condensers. The material is also used throughout the power generation industry. SS 304H Welded Tubes also has greater short term and long term creep strength than Alloy 304L at temperatures above 500 Degree C and is more resistant to sensitization than SS 304L. Anticorrosive in nature, these Stainless Steel 304H EFW Tubes are best in quality and available in the market in different sizes and shapes.

Key words:

304H Stainless Steel Pipes, 304H Stainless Steel Tubes, 304H Stainless Steel Seamless Pipe & Tubes, 304H Stainless Steel Welded Pipes And Tubes, 304H Stainless Steel Tubing, UNS S30409 Pipes And Tubes

304H Stainless Steel Pipes and Tubes Specification:

304H Stainless Steel Pipe & Tubes Specification	ASTM A269, ASTM A213, ASTM A312, ASME SA269, ASME SA213, ASME SA312
304H Stainless Steel Pipe & Tubes Grades	202, 304, 304L, 304H, 304LN, 309S, 310S, 316, 316L, 316H, 316Ti, 316LN, 317L, 321, 321H, 347, 347H, 904L, SMO 254, ALLOY 254, 6MO, 6MOLY, UNS S31254 ETC.
304H Stainless Steel Pipe & Tubes Type	Seamless / Welded / ERW / EFW / Cold Draw / Hot Finish / Cold Finish
304H Stainless Steel Pipe & Tubes Outer Diameter Size	Seamless - 1/2" NB TO 18" NB Welded / ERW- 1" NB TO 16" NB EFW - 8" NB TO 110" NB
304H Stainless Steel Pipe & Tubes Wall Thickness	Schedule 10 to Schedule 160 (3 mm to 100 mm Thickness)
304H Stainless Steel Pipe & Tubes Length	01 Meter to 12.5 Meters, Single Random Length, Double Random Length And Customize Size.
304H Stainless Steel Pipe & Tubes Ends	Plain Ends / Beveled Ends
304H Stainless Steel Pipe & Tubes Delivery Conditions	As Rolled, Formed, Stress Relieved, Annealed, Hardened, Tempered, Cold Draw
304H Stainless Steel Pipe & Tubes Coating	Electropolish, Mechanical Polish, Satin Finish, Passivated
304H Stainless Steel Pipe & Tubes Other Testing	Product Analysis, Transverse Tension Test, Flattening Test, Etching Test, Radiograph HIC Examination, Stabilizing Heat Treatment, Intergranular Corrosion Test, Weld Decay Test, Magnetic Particle Detection, Grain Size Test, NACE 0175, Dual Grade, PWHT (POST WELD HEAT TREATMENT), Flare Test, Bend Test, Hardness Test, Tensile Test etc
304H Stainless Steel Pipe & Tubes Dimension	All Pipes Is Manufactured and Inspected / Tested to the Relevant standards includingASTM And ASME
304H Stainless Steel Pipe & Tubes Value Added Services	Draw / Expansion / Machining / Sand Blasting / Shot Blasting / Heat Treatment
304H Stainless Steel Pipe & Tubes Packaging	Loose / Bundle / Wooden Pallet / Wooden Box / Plastic Cloth Wraps / Plastic End Caps / Beveled Protector
304H Stainless Steel Pipe & Tubes Shipment & Transportation	By Road - Truck / Train, By Sea - Break-bulk Conventional Vessel / FCL (Full Container Load) / LCL (Less Container Load) / 20 Feet Container / 40 Feet Container / 45 Feet Container / High Cube Container / Open Top Container, By Air - Freighter Civil Passenger and Cargo Planes
304H Stainless Steel Pipe & Tubes Material Test Certificate	Manufacturer Test Certificate As Per EN10204 3.1, 3.2 / Laboratory Test Certificate From NABL Approved Lab. / Under Third Party Inspection Agency Like SGS, TUV, DNV, LLOYDS, ABS ETC

304H Stainless Steel Pipes and Tubes Applications

The grade 304H steel can be made into plates, sheets, and coils to be used in the following:

Food processing equipment, particularly in beer brewing, milk processing & wine making.
Kitchen benches, sinks, troughs, equipment and appliances
Architectural panelling, railings & trim
Chemical containers, including for transport
Heat Exchangers
Woven or welded screens for mining, quarrying & water filtration
Threaded fasteners
Springs

Our Advantages

1. Wide Specifications Range;
2. Eco-friendly and 100 % recyclable;
3. Outstanding mechanical properties;
4. Good performance after welding;
5. Good shape and high precision;
6. Excellent corrosion-resistant and long service life.
With all kinds of processing, NC flame, plasma, laser and water jet cutting, drilling, punching,welding, bending, etc. We can supply other stainless steel products, like stainless steel sheet, stainless steel pipe, u tube, H beam, flat bar, and so on. We can also provide you with the following services:
1. Unscreen-rolling of steel coils and flattening into steel plates
2. Steel coil is divided into strip and steel strip.
3. Split into small steel coil other products we can provide you

Chemical Composition of 304H Stainless Steel Pipes and Tubes

The Chemical Composition of grade 304H Stainless Steel is outlined in the following table

Grade		C	Mn	Si	P	S	Cr	Mo	Ni	N
304	min.	-	-	-	-	-	18.0	-	8.0	-
304	max.	0.08	2.0	0.75	0.045	0.030	20.0		10.5	0.10
304L	min.	-	-	-	-	-	18.0	-	8.0	-
304L	max.	0.030	2.0	0.75	0.045	0.030	20.0		12.0	0.10
304H	min.	0.04	-	-	-0.045	-	18.0	-	8.0	-
304H	max.	0.10	2.0	0.75		0.030	20.0		10.5

Mechanical Properties of 304H Stainless Steel Pipes and Tubes

The Mechanical Properties of grade 304H Stainless Steel are displayed in the following table.

Grade	Tensile Strength (MPa) min	Yield Strength 0.2% Proof (MPa) min	Elongation (% in 50mm) min	Hardness
Grade	Tensile Strength (MPa) min	Yield Strength 0.2% Proof (MPa) min	Elongation (% in 50mm) min	Rockwell B (HR B) max	Brinell (HB) max
304	515	205	40	92	201
304L	485	170	40	92	201
304H	515	205	40	92	201
304H also has a requirement for a grain size of ASTM No 7 or coarser.

304H Stainless Steel Pipes and Tubes Physical Properties

Physical properties of 304H grade stainless steel in the annealed condition

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/L/H	8000	193	17.2	17.8	18.4	16.2	21.5	500	720

Specification Comparison For Grade 304H Stainless Steel Pipes and Tubes

Grade Specifications for 304H grade stainless steel

Grade	UNS No	Old British		Euronorm		Swedish SS	Japanese JIS
Grade	UNS No	BS	En	No	Name
304	S30400	304S31	58E	1.4301	X5CrNi18-10	2332	SUS 304
304L	S30403	304S11	-	1.4306	X2CrNi19-11	2352	SUS 304L
304H	S30409	304S51	-	1.4948	X6CrNi18-11	-	-
These comparisons are approximate only. The list is intended as a comparison of functionally similar materials not as a schedule of contractual equivalents. If exact equivalents are needed original specifications must be consulted.