ASTM A240 304h stainless steel welding

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 China. We are the large stainless material factory in China.

Grade 304 is very demanded within the fields of food processing and dealing with industries as they are anti-corrosive in addition to excessive-temperature adapters. These sheets and plates are getting used diversely in the architectural and constructional enterprise for its excessive pressure and stress absorbance qualities. 304H has a higher strength underneath excessive temperature, subsequently it is normally applied in the and stress-bearing use above 500℃ and even 800℃. It doesn’t cause any problems to high temperature use, but it would cut back corrosion resistance to aqueous answer.

ASTM A240 TP304H Stainless Steel Plate


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


Strength (Mpa)

Tensile Strength (Mpa)

Elongation (%)










304h stainless steel pipe

For material exposed inland, mild industrial, or milder service, minimal maintenance is required. Only sheltered areas want occasional washing with a stream of pressurized water. In heavy industrial areas, frequent washing is advisable to remove dust deposits which could eventually trigger corrosion and impair the floor look of the steel. Grade 304 is relatively straightforward to machine, though more difficult than carbon metal. Cutting pace ought to be decrease, the feed greater, tooling and tools heavier. The machinability of 304 is about 60% that of AISI B1112 resulphurised free chopping carbon metal.

ASTM A240 metal plate covers Austenitic Steels, Ferritic steels and Martensitic Steels. “H” grades are excessive carbon stainless-steel grades, having improved power at excessive temperatures – usually A240 SS304H Stainless factory above 500°C. These excessive carbon grades have excessive brief-time period and lengthy-term creep power.

What grade of stainless steel will not rust?

One of the most widely used of all stainless steel grades, 304, is austenitic. This heat-resistant grade offers good corrosion resistance to many chemical corrodents, as well as industrial atmospheres.

ASTM A240 TP304H Stainless Steel Plate

Our steel mills have fabricating employees that have 5-10 years of working expertise. If you have an interest in shopping for ASTM A204 steel plate products, contact us now for the most recent worth or verify the next desk for equal metal grade of ASTM A204. This covers chromium, chromium-nickel, and chromium-manganese-nickel stainless-steel plate, sheet, and strip for stress vessels and for common functions together with architectural, building, development, and aesthetic applications. Type 316 is an austenitic chromium-nickel stainless and heat-resisting steel with superior corrosion resistance as compared to different chromium-nickel steels when uncovered to many forms of chemical corrodents similar to sea water, brine options, and the like. The fatigue strength or endurance limit is the utmost stress beneath which material is unlikely to fail in 10 million cycles in air environment. The fatigue power for austenitic stainless steels, as a bunch, is often about 35 percent of the tensile strength. Substantial variability in service outcomes is skilled since further variables affect fatigue strength.

304h stainless steel pipe

Its used to produce industrial boilers, strain valves, steam exhaust, pipelines, cooling towers, warmth exchangers, flanges, and condensers. 304H chrome steel plate can also be commonly used within the chemical, gas, and oil refining industry. This ability to resist high temperatures makes 304H stainless steel a helpful material in theses environments. Most generally 304H chrome steel is present in petroleum refining plants. “L” grades can be utilized as commonplace grades as long as the mechanical properties conform to the standard grade necessities and excessive temperature power is not a requirement. “L” grades normally comply with normal grade necessities, however Mills’ test certificates need to be checked on a case by case foundation.

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  • The Alloys 304, 304L, and 304H austenitic stainless steels provide helpful resistance to corrosion on a variety of reasonably oxidizing to reasonably decreasing environments.
  • Each alloy represents a superb mixture of corrosion resistance and fabricability.
  • Heat exchangers, piping, tanks, and different course of equipment in touch with recent water additionally make the most of these alloys.
  • This mixture of properties is the reason for the intensive use of these alloys which represent nearly one half of the total U.S. chrome steel manufacturing.
  • The alloys are used widely in equipment and utensils for processing and handling of meals, drinks, and dairy products.

As mentioned above, it is regular practice for this situation to be met. ANSON can provide ASTM A204 steel plates from stock or from reputed metal mills. We additionally supply steel fabrication service where steel plates can go through processings like chopping , drilling, welding, milling, machining as you require.

ASTM A240 TP304H Stainless Steel 2D Finish Plate

What are the 5 types of stainless steel?

There are a number of grades to choose from, but all stainless steels can be divided into five basic categories:Austenitic.
Precipitation hardening.

AS1210, Pressure Vessels, allows using grade 304 as much as a temperature of 800°C. The normal allows the use of greater design stresses in any respect temperatures for 304H. Austenitic stainless steels are inherently robust, sustaining the ductile fracture mode and high absorbed vitality in impression tests to cryogenic temperatures (-200°C). The requirement of an “H” grade for any excessive temperature utility must be specified during the time of order. The required high carbon metal will be supplied, based mostly on availability. The and its test certificate will verify grade compliance. It is very common for metal mills to produce “L” heats when commonplace grades have been ordered.

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Such steels are “sensitized” and topic to intergranular corrosion when uncovered to aggressive environments. The carbon content of Alloy 304 could permit sensitization to occur from thermal circumstances skilled by autogenous welds and heat-affected zones of welds. For this reason, the low carbon Alloy 304L is preferred for purposes during which the fabric is put into service within the as-welded condition. Low carbon content material extends the time necessary to precipitate a harmful degree of chromium carbides however does not eliminate the precipitation reaction for materials held for lengthy times in the precipitation temperature range.

We have in depth experience in exporting, and we’ve clients all around the world who buy metal merchandise from FRD. 09CuPCrNi-A is a weather resistant metal created by alloying copper, chromium and nickel. 16Mo3 Steel is a EN10028 specified strain vessel grade chrome molybdenum steel alloy is used as a weldable steel in the fabrication of industrial boilers and steel pressurised vessels discovered within the oil. Scale or slag that forms from welding processes is eliminated with a stainless steel wire brush. Normal carbon steel wire brushes will depart carbon metal particles within the surface which will ultimately produce floor rusting.

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It is frequent for steel mills to supply “L” heats when normal grades have been ordered. The follow is reliable and should not current problems to fabricators or finish customers. Pressure Vessel codes (e.g. AS1210) and Pressure Piping codes give allowable working pressures for every of the grades at nominated elevated temperatures. These codes enable higher pressure scores for normal grades than for “L” grades. The codes don’t permit the use of “L” grades above 525oC or 425oC .

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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 304 vs 304h