ASTM A240 TP304H Stainless Steel Perforated Sheet

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.

The 18-8 stainless steels, principally Alloys 304, 304L, and 304H, are available in a wide range of product types including sheet, strip, and plate. The alloys are covered by a wide range of and codes regarding, or regulating, construction or use of kit manufactured from these alloys for particular situations. Food and beverage, sanitary, cryogenic, and stress-containing applications are examples. The time period ‘corrosion resistant steel’ is used when the alloy has less than the 12% minimum of chromium, for example within the aviation industry. There are totally grades and floor finishes of stainless steel, depending on the place it is going to be used. Stainless steels have a higher resistance to oxidation and corrosion in lots of pure and man-made environments; nevertheless, it is important to choose the correct sort of chrome steel for the use.

304h ss

Grade 304H has a melting range from 2550 to 2590 levels Fahrenheit. ASTM A240 steel plate covers Austenitic Steels, Ferritic steels and Martensitic Steels. Minimum mechanical properties for annealed Alloys 304 and 304L austenitic chrome steel plate as required by ASTM specifications A240 and ASME specification SA-240 are shown beneath. 304H chrome steel plate is on the A240 SS304H Stainless factory market for purchase at Penn Stainless Products. 304H stainless steel plate is usually stocked in thicknesses between 0.188” and a couple of.0”. For extra sizes and questions concerning 304H chrome steel plate, contact a Penn Stainless group member for help.

What is the difference between austenitic and ferritic stainless steel?

Ferritic stainless steels are magnetic, while austenitic stainless steels in the annealed condition are not. When the austenite converts to martensite, strength increases, ductility increases, and the structure becomes magnetic.

You will commonly discover this grade of the steel in the cooking tools and pans. It is also known out there because of its versatile features. It also has the best corrosion resistance ability; with that, it additionally has the high ease of the fabrication property. With its energy, durability and corrosion resistance, the 304 grade is a major choice among stainless steels. Nickel helps increase the corrosion resistance of the metal and in addition makes it austenitic. Properties of austenitic steels include being non-magnetic and non-warmth treatable. 304 stainless steel is also far less electrically and thermally conductive than steel.

ASTM A240 Stain Finish Stainless Steel 304H Plate

ASTM A240 TP304H Stainless Steel Perforated Sheet

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Exposure of the 18-8 austenitic stainless steels to temperatures in the 800°F to 1500°F (427°C to 816°C) vary might trigger precipitation of chromium carbides in grain boundaries. Such steels are “sensitized” and topic to intergranular corrosion when exposed to aggressive environments. The carbon content of Alloy 304 could enable sensitization to happen from thermal conditions skilled by autogenous welds and heat-affected zones of welds. For this purpose, the low carbon Alloy 304L is preferred for functions in which the fabric is put into service within the as-welded situation. Low carbon content material extends the time necessary to precipitate a dangerous stage of chromium carbides however does not get rid of the precipitation response for material held for lengthy occasions within the precipitation temperature vary.

304 vs 304h

How can you tell if stainless steel is 304?

If you want to do spot check of SS, just take a random piece from the raw material and do a spark test. Run a grinder on it, if the sparks are reddish orange, thin and don’t fly much it’s SS304. If the sparks are yellow, and fly lot further it is SS 202.

ASTM A240 TP304H Stainless Steel No.1 Finish Plate

The 9 to eleven percent of nickel contained by these 18-8 alloys assists in offering resistance to moderately decreasing environments. The extra highly decreasing environments such as boiling dilute hydrochloric and sulfuric acids are proven to be too aggressive for these supplies.

Goodluck Metal Corporation is an impressive firm out there for manufacturing and supplying Stainless Steel 304H Sheets & Plates . Stainless Steel 304H incorporates a mixture of chromium, nickel, carbon, and manganese content material on it. We are providing a variety of Stainless Steel Sheets & Plates in numerous varieties, dimensions, measurement, thickness, and many more.

ASTM A240 TP304H Plates

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Austral Wright Metals assumes no liability in connection with the knowledge on this Product Data Sheet. Austral Wright Metals provides a comprehensive vary of stainless steels, copper alloys, nickel alloys and different high performance metals for difficult service conditions.


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 larger the chromium content within the steel, the faster the protecting barrier renews itself. Once oxidized, 304 stainless-steel rusts less than two-thousandths of an inch a 12 months. This is why no stainless-steel can in reality be known as ‘stainless.’ The distinction is within the thickness of the chromium oxide layer, just a few molecules thick and extremely dense. This layer is claimed to be passivated and is so tough it prevents the further diffusion of oxygen molecules into the steel beneath.

  • This makes it perfect for manufacturing medical and equipment.
  • The addition of the additional carbon in 304H stainless steel plate significantly results the mechanical properties of 304H stainless steel plate.
  • The Alloys 304, 304L, and 304H austenitic stainless steels provide useful resistance to corrosion on a variety of reasonably oxidizing to moderately decreasing environments.
  • The alloys are used widely in gear and for processing and handling of food, drinks, and dairy products.
  • Heat exchangers, piping, tanks, and different course of tools in touch with recent water also make the most of these alloys.
  • The tensile strength of grade 304H stainless-steel plate is 74.sixty nine ksi.

The steel needs to be chilly labored to generate larger tensile strength. For stainless-steel sections which are welded closely, publish-weld annealing could also be necessary to supply most corrosive resistance. Type 304 and Type 304L have very comparable chemical and mechanical properties and are sometimes included on a single material test certificates when the actual properties of a stainless steel plate meet the criteria of both sorts. Type 304L is a variation of Type 304 and has a decrease carbon content material which improves and lowers the danger of lowered corrosion resistance around the weld. Type 304L also has a slightly decrease yield and tensile strength than Type 304. Co. is one of the promising manufacturers and suppliers of diverse steel works. We have been offering a broad range of merchandise all around the globe.

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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 chemical composition
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