ASTM A240 304h vs 304

Gangsteel produce and export ASTM A240 304H stainless steel plate, ASTM A240 TP304H Stainless Steel No.1 Finish Plate and we supply TP304H stainless steel stock list thickness 2mm to 300mm at Origin China. We are the large stainless material factory supplier in China.

It has excellent formability, properties, and wall of thickness to carry heavy-load. Stainless Steel Sheets/ Plates resist the stress corrosion cracking and oxidation as these comprise nickel.

304h stainless steel tube

Austenitic stainless steels like Type 317 L are widely available, have good general corrosion resistance, good cryogenic toughness, and excellent formability and weldability. We transport sheets, plates and coils in varied widths, finish, type, size, width, thickness, specification, and surfaces. The chemical composition of sheets, coils, and plates has a composition like S, Si, Ni, Mn, C, N, and Cr. The equivalent grades of plates, sheets, and coils can be known reviews offered at the time of supply or question.

exposure of the 18-8 austenitic stainless steels to temperatures within the 800°F to 1500°F (427°C to 816°C) vary may trigger precipitation of chromium carbides in grain boundaries. Such steels are “sensitized” and subject to intergranular corrosion when exposed to aggressive environments. The carbon content material of Alloy 304 could permit sensitization to happen from situations skilled by autogenous welds and heat-affected zones of welds. For this purpose, the low carbon Alloy 304L is preferred for functions by which the fabric is put into service within the as-welded condition. Low carbon content material extends the time essential to precipitate a harmful level of chromium carbides but does not remove the precipitation reaction for material held for long instances in the precipitation temperature vary. The chromium content material promotes the fabric’s appreciable resistance to the of corrosion and oxidation. The chrome steel alloy resists most oxidizing acids and can face up to strange rusting though this doesn’t mean that the steel will not tarnish over time.

Dimensionally correct this vary is availed out there simply. Quality tested our vary is acclaimed by the clients because it provides high efficiency and ensures clean features.

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The steel needs to be cold worked to generate greater tensile energy. For stainless steel sections that are welded heavily, submit-weld annealing may be needed to provide most corrosive resistance. One of essentially the most versatile and generally used stainless steels in the marketplace, Grade 304 stainless steel is the most normal used alloy of this kind. Our provided 304H SS Plate has the next carbon content material then 304/304L whereas making the metal extra suitable for use in purposes the place larger temperatures are current. 304H Stainless Steel Plate is an austenitic chromium-nickel steel alloy and the larger carbon content delivers an elevated yield strength and tensile strength. Stainless Stel 304H Sheet is beneficial to be used in ASME strain vessels in working service above 525° C because of the grade’s warmth resistant properties.

304h stainless steel pipe

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ASTM A240 TP304H Stainless Steel No.1 Finish Plate

ASTM A240 Type 304H Plate is out there within the form of Sheet, Coils, Foils, Rolls, Plain Sheet, Shim Sheet, Strip, Flats, Clad Plate, Rolling Sheet, Flat Sheet, Rolling Plate, and Flat Shim. While austenitic steels are costlier than ferritic stainless steels, they’re generally more durable and corrosion resistant. Austenitic steels are non-magnetic in the annealed situation, though they can turn out to be barely magnetic when cold worked. They have good formability and weldability, as well as excellent toughness, significantly at low or cryogenic temperatures. Austenitic grades also A240 SS304H Stainless factory have a low yield stress and relatively excessive tensile power. The 200 sequence—also known as chromium-manganese stainless steels—have been developed within the Nineteen Forties and Fifties when nickel was in short supply and costs were high. It is now thought-about a cost-effective substitute for 300 series stainless steels that can present an extra benefit of improved yield energy.

  • In primary, all three grades are being elongated by way of the utmost restrict of forty%.
  • publicity of the 18-8 austenitic stainless steels to temperatures within the 800°F to 1500°F (427°C to 816°C) vary may cause precipitation of chromium carbides in grain boundaries.
  • Besides different components chromium, molybdenum, and nickel are the primary contributors in the entire composition.
  • All the stainless steel grades 304, 304L, and 304H are chemically compounded with the parts like chromium, phosphorus, silicon, manganese, carbon, sulphur, molybdenum, and nickel.
  • Hence, it reveals giant yield along with tensile strengths, good temperature resistance, and elongation range.

We Piyush Steel provide this SS 316 Coil in numerous sizes and length as per the necessities and demands of our clients. Stainless Steel Sheets/ Plates have a passive layer of chromium on its floor to immune the corrosion resistant property. These can be used in elevated temperature and chloride containing surroundings.


304H stainless steel belt, SUS304H stainless steel belt, 304H stainless steel belt, 0Cr18Ni9, 304-general model; namely 18/8 stainless steel. The GB grade is 0Cr18Ni9.
Vickers hardness (HV) 370°-420° and Hardness tolerance (HV) ±20°

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a240 Type 304H widely used material.
Corrosion resistance, heat resistance, good mechanical properties, good processing performance at room temperature such as deep drawing, bending, etc., will not harden after heat treatment, can withstand general rust in the building, and can resist erosion by food processing media (but contains concentrated acid
Corrosion may occur due to high temperature and chloride components), and it can resist organic compounds, dyes and a wide variety of inorganic compounds.
ASTM A240 Stainless Steel 304H Chemical Composition



ASTM A240 Chemical Composition












Austenitic Steels










A240 Type 304L (low carbon), good resistance to nitric acid, and durable for medium temperature and concentration of sulfuric acid, widely used as liquid gas storage tanks, low temperature equipment (304N), appliances and other consumer products, kitchen equipment, hospital equipment, transportation Tools, wastewater treatment equipment.

Alloy 304 (S30400), 304L (S30403), and 304H (S30409) stainless steels are 18% chromium, 8% nickel austenitic alloys, which are the most common and commonly used alloys in the stainless steel family. Because these alloys have one or more of the following properties, they can be used in various applications.
Properties include:
STM A240 TP304H Stainless Steel Plate Physical Properties


Density (kg/m3)

Elastic Modulus (GPa)

Mean of Thermal Expansion (m/m/0C)

Thermal Conductivity (W/m.K)

Specific Heat 0-1000C (J/kg.K)

Electrical Resistivity (n.m)




at 1000C

at 5000C












A high-alloy steel A240 304h that can resist corrosion in the air or in chemically corrosive media. It has a beautiful surface and good corrosion resistance. It does not need to undergo surface treatment such as plating, but exerts its inherent surface properties. It is used in various steels.
One kind, usually called stainless steel.
High alloy steels such as 13 chromium steel and 18-chromium nickel steel are representative of performance.
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From a metallographic point of view, because stainless steel contains chromium, a very thin chromium film is formed on the surface. This film isolates the intruding oxygen from the steel for corrosion resistance.

In order to maintain the inherent corrosion resistance of stainless steel, steel must contain more than 12% chromium
SS 304H Plate Equivalent grades









SS 304H



304, 304L, and 304H alloys are the most prone to stress corrosion cracking (SSC) among austenitic stainless steels because of their relatively low nickel content.
The conditions that cause stress corrosion cracking are: (1) the presence of halide ions (usually chloride), (2) residual tension, and (3) the temperature exceeds 120°F (49°C).
Cold deformation during alloy forming, stenting into tube sheet, welding operations, etc. can all cause stress.
Annealing and stress relief heat treatment after cold deformation can reduce stress, thus reducing the possibility of halide stress corrosion cracking.
In the environment that may cause intergranular corrosion, it is best to choose low-carbon 304L alloy when working under low-temperature annealing.


AASTM A240 Stainless Steel 304H Plate Mechanical Properties


Mechanical Properties for Stainless Steel Plates, Stainless Steel Sheet



Tensile Properties


Yield Strength (Mpa)

Tensile Strength (Mpa)

Elongation (%)










We are offeringSail Hard Quenched and Tempered Platesto our shoppers. We are providing High Tensile Hot Pressure Vessel Platesto our clients. We are offeringHot Rolled Stainless Steel Coils and Sheetsto our shoppers.

ASTM A240 TP304H Stainless Steel Perforated Sheet

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ASTM A240 TP304H Stainless Steel Shim Plate

The most typical of these is grade 304, which usually incorporates 18 percent chromium and 8 % nickel. 317L is a molybdenum bearing austenitic chromium nickel steel just like type 316, except the alloy content material in 317L is considerably larger. Type316Lhas the same composition asType 316except the carbon content is held under 0.03%. Not unexpectedly, its common corrosion resistance and other properties intently correspond to these ofType 316. However, it does present immunity to intergranular attack within the as-welded situation or with quick durations of exposure in the temperature range of 800° °F.

Although nickel is the alloying factor most commonly used to provide austenitic steels, nitrogen provides another chance. Stainless steels with a low nickel and excessive nitrogen content material are categorized as 200 series. Because it’s a fuel, nonetheless, only restricted quantities of nitrogen may be added earlier than deleterious results come up, together with the formation of nitrides and gas porosity that weaken the alloy.

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Gangsteel mainly products are 304h Square tube,304h stainless,304h Rectangular tube,304h seamless pipes,304h seamless tubes,304h welded pipes,304h angle bar,304h H Beam,304h channel beam,304h round bar ,304h cutting part,304h machine part,304H CNC cutting parts,304H water jet cutting parts,304H laser cutting parts and stainless steel 304h. If you have requirement, please contact us by email

ASTM A240 TP304H Stainless Steel Designer Sheet
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