ASTM A240 aisi 304h

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 2mm to 300mm at Origin China. We are the large stainless material factory supplier in China.

“L” grades nearly always comply with the usual grade requirements, but this should be investigated on every event. The codes include a clause stating that normal grades, which include at least 0.04% carbon, should be used at temperatures above 550°C. Therefore, grades 304 or 316, having 0.02% carbon, usually are not allowed for use at high temperatures.

  • “H” grades are larger carbon versions of standard grades and have increased power, significantly at elevated temperatures .
  • There are over one hundred fifty grades of stainless-steel, of which fifteen are essentially the most used.
  • The low carbon “L” grades are used the place excessive temperature publicity will occur, together with welding of medium or heavy sections.
  • Stainless steels have a higher resistance to oxidation and corrosion in lots of natural and man-made environments; nonetheless, you will need to choose the right type of chrome steel for the use.
  • Once sensitised, impaired aqueous corrosion resistance and some discount in ambient temperature ductility and toughness will result .

The cleanability of 304 chrome steel is superior to many different materials. The low carbon version, 304L, may be required for full corrosion resistance when sections thicker than 6mm are welded. The model with assured high carbon, 304H, could also be required for elevated temperature service, such as pressure vessels. In most functions the steel is used the place its corrosion resistance gives long lasting look and service life. The ease of cleansing and of sustaining a hygienic floor on the steel make it glorious for a lot of purposes.

304h vs 304l

Does surgical steel turn skin green?

This will not turn your skin green or any other color. Unlike many other , these are safe to wear and no harm will come if you wear stainless steel for life.

304H stainless steel Strips are available in inventory with Asiamet in numerous variant similar to SS 304/304L/ 304H. 304H has a greater strength beneath excessive temperature, subsequently it is usually applied within the structural and pressure-bearing use above 500℃ and even 800℃. It does not cause any problems to high A240 SS304H Stainless factory temperature use, but it will scale back corrosion resistance to aqueous resolution. 304L is from grade 304 with a decrease content of carbon, which does not require annealing after welding, and it is broadly utilized to make thick elements . And the austenitic structure makes these grades have excellent tenacity, even in freezing chilly environments they stay in good tenacity.

aisi 304h

We have in home plasma, laser, water-jet chopping services, enabling us to provide our stainless steel 304H strip merchandise to satisfy your specific requirement when it comes to thickness, width and length. Our Company, Asiamet is a well-known manufacturer and provider of stainless steel 304H strips designed and manufactured from prime quality uncooked supplies, as per worldwide standards. We have provide of our chrome steel 304H strips merchandise to many nations and throughout India. exposure of the 18-eight austenitic stainless steels to temperatures in the 800°F to 1500°F (427°C to 816°C) vary could trigger precipitation of chromium carbides in grain boundaries. Such steels are “sensitized” and subject to intergranular corrosion when exposed to aggressive environments.

Why welding of stainless steel is difficult?

Is welding stainless steel difficult? Stainless steel retains heat very efficiently, which makes welding it a bit more difficult especially for the novice welder. When faced with excessive welding heat, stainless steel can warp from the high temperatures and even distort during the cooling process.

It is very for steel mills to produce “L” heats when commonplace grades have been ordered. In reality, a number of the product and check certificates are marked “304/304L”. The details offered on the mill test certificates will show if the alternative grades comply with the standard. Standard grades are sometimes used as a substitute of “H” grades as their carbon contents meet the “H” limits of 0.04 to 0.10%. Additional testing could also be required to satisfy the grain size requirement. “H” grades having a most 0.10% of nitrogen and 0.08% of carbon are used as standard grades. “L” grades can be used as standard grades as long as high temperature power just isn’t required, and the mechanical properties conform to the standard grade necessities.

SS 304H Rolled Sheet Coil and Stainless Steel Rolled Sheet Coil is in ready stock with Siddhagiri Metals and Tubes. Harsh Steel is amongst the leading producers of quality Stainless Steel Fasteners. These industrial stainless-steel fasteners are made utilizing prime grade rust resistant steel to provide long life service.

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ASTM A240 TP304H Stainless Steel Plate

304h part

“H” grades are excessive carbon stainless steel grades, having improved energy at high temperatures – usually above 500°C. These excessive carbon grades have high short-term and lengthy-term creep strength.

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304 is likely one of the easier austenitic stainless steels to forge, at temperatures above 925°C. Grade 304 is usually used for meals equipment, the place cleansing for the removing of micro organism is significant.

304h angle bar


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 (%)










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The chromium content promotes the material’s appreciable resistance to the effects of corrosion and oxidation. The chrome steel alloy resists most oxidizing acids and can stand up to strange rusting although this doesn’t imply that the metal won’t tarnish over time. The metal must be cold worked to generate greater tensile power. For stainless-steel sections that are welded closely, post-weld annealing may be needed to offer most corrosive resistance. Type 304 and Type 304L have very similar chemical and mechanical properties and are often included on a single materials take a look at certificates when the actual properties of a stainless-steel plate meet the standards of both sorts.

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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 welding
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