ASTM A240 304h stainless tube

Gangsteel produce and export ASTM A240 304H stainless steel , 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.

304h channel beam

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The low carbon model, 304L, could also be required for full corrosion resistance when sections thicker than about 6mm are welded. The version with assured excessive carbon, 304H, could also be required for elevated temperature service, similar to pressure vessels. In most functions the steel is used the place its corrosion resistance provides long lasting appearance and repair life. The ease of cleaning and of sustaining a hygienic floor on the metal make it excellent for many purposes. Grade 304 contains 18% chromium, which makes it proof against many corrosive environments. It is austenitic in construction because of the eight% nickel it incorporates.

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  • publicity of the 18-8 austenitic stainless steels to temperatures within the 800°F to 1500°F (427°C to 816°C) vary could trigger precipitation of chromium carbides in grain boundaries.
  • Type 304L is a variation of Type 304 and has a decrease carbon content material which improves and lowers the chance of lowered corrosion resistance across the weld.
  • The carbon content of Alloy 304 may permit sensitization to occur from thermal conditions experienced by autogenous welds and heat-affected zones of welds.
  • Such steels are “sensitized” and topic to intergranular corrosion when uncovered to aggressive environments.
  • Type 304L also has a slightly lower yield and tensile strength than Type 304.

It is an austenitic chromium-nickel steel alloy and the greater carbon content delivers an elevated tensile and yield strength. Hastelloy X is a superalloy with enhanced excessive temperature energy, oxidation resistance and fabricability. It is resistance to emphasize corrosion cracking in petrochemical functions. This materials has good resistance to chloride stress corrosion cracking , it’s primarily famous for warmth and oxidation resistance. it additionally has good resistance to carburization, glorious resistance to reducing or carburizing atmospheres. Hastelloy X, also called Alloy X, is one of the most generally used nickel base superalloys for gas turbine engine components.

Due to addition of Copper, it has elevated resistance to phosphoric, sulphuric and hydrochloric acid concentration. It is usually referred to as super austenitic chrome steel due to superiority over 300 collection austenitic metal grades. 904L is primarily used in production and transport of phosphoric acid as well as in surroundings containing concentrations of phosphoric acid or phosphorous gas. We stock .1875” – 2” thick x 48”, 60” and 96” wide up to 240” lengthy. Our water jet cutting capabilities for 304 stainless-steel plates are as much as 6” x 120 x one hundred forty four. The concept behind the specs of those grade sheets and plates is ruled by the ASTM A240 and ASME SA240 requirements. One of the characteristics of austenitic steel is having a low carbon content, and 304 chrome steel incorporates a mere 0.07% carbon.

stainless 304h properties

The alloying elements that are most helpful for oxidation resistance are chromium, silicon, and aluminium. A optimistic impact has also been achieved with small additions of so-known as lively components, e.g. ttrium, hafnium, uncommon earth metals (REM, e.g. Ce and La). These have an effect on the oxide progress so that the shaped layer might be thinner, harder, and more adherent and thus more protecting. The specification of the sheets is the A240 for strain vessel and high temperature purposes. The ASTM A240 SS 304 Sheet can stand up to excessive temperatures up to 870 levels Celsius.

304h stainless round bar

C954 reveals resistance to corrosion in sea water and low oxidation charges at larger temperatures. All the stainless-steel grades 304, 304L, and 304H are chemically compounded with the elements like chromium, phosphorus, silicon, manganese, carbon, sulphur, molybdenum, and nickel. Besides other elements chromium, molybdenum, and nickel are the principle A240 SS304H Stainless factory contributors in the whole composition. Hence, it reveals large yield along with tensile strengths, nice temperature resistance, and elongation vary. In primary, all three grades are being elongated via the utmost restrict of forty%.

304h stainless steel sheet

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Grade 316 Stainless Steel is the usual molybdenum-bearing grade. The molybdenum gives 316 higher overall corrosion properties than Grades 302 and 304, notably greater resistance to pitting and crevice corrosion in chloride environments.

What is ASTM a240 Type 304?

Essentially, Grade 304 is an austenitic chromium alloy which is also known as an “18/8” stainless as the make-up of the steel is 18% chromium and 8% nickel. The chromium content promotes the material’s considerable resistance to the effects of corrosion and oxidation.

To ensure weld metal properties (e.g. power, corrosion resistance) equal to those of the parent metallic, a filler materials with an identical composition should preferably be used. In some cases, nonetheless, a differing composition could enhance e.g. weldability or structural stability. Gas shielded welding has resulted in one of the best creep properties for welds. When MAG welding is carried out with wire, an influence supply with pulse current may be necessary to acquire good weldability. Components manufactured from excessive-temperature materials ought to subsequently be designed and operated so that acid condensates aren’t shaped, or at least in order that any such condensates are drained away. Optimising steels for prime temperatures has meant that their resistance to aqueous corrosion has been limited. All steels are austenitic, leading to relatively excessive creep power values.


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 Coefficient 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 (%)










Grade 305 stainless was designed for nice formability, good strength and excellent corrosion resistance. This materials just isn’t magnetic and can’t be hardened by warmth treatment.

304h steel

304H Stainless steel plate is often discovered throughout the facility technology business. Its used to provide industrial boilers, pressure valves, steam exhaust, pipelines, cooling towers, heat exchangers, flanges, and condensers. 304H chrome steel plate can also be commonly used within the chemical, gas, and oil refining industry. This capability to face up to high temperatures makes 304H stainless-steel a helpful materials in theses environments.

Waspaloy is an age-hardenable superalloy with glorious power with good corrosion resistance. Nickel Monel K500 is an age hardenable alloy that brings together the corrosion resistance of Monel 400 with excessive power corrosion fatigue and erosion resistance. K500 has roughly three times the yield strength of Monel 400 with double the tensile strength. Cold working earlier than precipitation hardening will make it stronger.

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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 304h stainless steel density
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