ASTM A240 304h stainless steel properties

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 stainless material factory supplier in China.

Stainless metal 304 is widely used materials in almost all the industrial applications, hence it’s selected as a candidate material for examine of tungsten inert gasoline welding course of. In order to supply, a high quality and dependable welding, the welding process needs to be strong in efficiency. A recently developed in style experimental strategy often known as definitive screening is used for process enchancment.

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ASTM A240 TP304H Stainless Steel Shim Plate

Care is taken on the standard of the welded joint that doesn’t turn into impaired by the shielding gas /gas combination while using on this experiment. After welding the specimens are divided into three groups to bear tensile test, hardness take a look at and micro construction observations. The experimental outcomes show the effect of the shielding gasoline on the weld penetration power etc. Finally the strength of all three weldments produced through the use of totally different shielding gases is compared and future required investigations on choice of shielding gasoline for 0.8mm strong wire is proposed. In the fabrication of a pressure vessel, the successful bending operation demands higher tensile strength of weld bead. Therefore, to attain typical tensile strength and hardness is the primary goal of this paper.

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This material has resistance to pitting, stress corrosion cracking and crevice corrosion. Stainless grade 304V wire is a generally used alloy for non-implantable medical units. This is Vacuum Arc Remelted , which produces a extra uniform chemistry with minimal voids and contaminants. It can be used in corrosion environments and atmospheres with its excellent corrosion resistance. This materials is vacuum melted, martensitic age-hardened alloy that has a mixture of strength, toughness and corrosion resistance. The tensile energy could be as excessive as 255 ksi, with a fracture toughness of about ksi with a similiar corrosion resistance of 304 stainless. Grade 13-eight is a martensitic precipitation hardening chrome steel that has wonderful strength, excessive hardness, superior toughness and good corrosion resistance.


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 (%)










However, the increased nitrogen degree have to be considered in the alternative of steel and consumable. It is suggested to make use of the WRC-92 diagram to make sure there is adequate security margin for actual compositions and, if attainable, verify root bead ferrite content material. Gas purging plays an necessary role within the removing of air from the fusion zone thereby making certain the weld root quality. Specialization purposes, purging techniques using argon-hydrogen and helium-argon mixtures and nitrogen have been developed. The supplies being joined and the welding process used are the 2 main components within the number of the optimum gasoline or gas mixture.

10 % N2 was required to cross each the corrosion exams ASTM G48 Method A (4 g/m2) and ASTM A923 (1 g/m2). The highest average influence toughness was achieved with pure nitrogen as the backing gas.

  • Precisely controlled metal transfer with modified quick-circuit GMAW supplies uniform droplet deposition and makes it easier for the welder to regulate the weld pool and, thus, heat enter and welding speeds.
  • When prepping stainless steel, dedicated brushes, files, and grinders must be used that never contact carbon metal or aluminum.
  • 304H steel and 308H consumable compositions would permit use of N-2, together with gases for purging, with no significantly increased threat of sizzling cracking.
  • The fundamentals of welding chrome steel tube and pipe for applications ranging from high-purity food and beverage, prescribed drugs, and petrochemicals, are mentioned.

Examples are hydrogen chloride gasoline and sulfuric, acetic and phosphoric acids. Also has glorious resistance to pitting and stress corrosion cracking but has poor corrosion resistance to oxidizing environments. Monel R405 is a nickel alloy that may be a free-machining grade of Monel four hundred as a result of its greater sulfur content material. Monel 405 has the identical corrosion resistance and bodily properties as Monel 400 although it has a different range of mechanical properties.

ASTM A240 TP304H Stainless Steel Chequered Sheet

Nitronic grade fasteners have wonderful corrosion resistance properties and energy. It has low magnetic permeability and wonderful cryogenic properties.

Stainless metal is among the most widely used and versatile kind of steel. Stainless metal is also known as ‘corrosion-resistant metal’ – it does not stain, corrode or rust as simply as normal carbon steel. There are greater than 60 grades of chrome steel and divided into 5 families. Due to its anti-corrosive properties, stainless-steel hexagon 304H bars have turn out to be important within the manufacturing of elements for the medical, tooling, mechanical, engineering and food industries. The authors emphasize basic metallurgical ideas governing microstructure evolution and property improvement of stainless steels, including martensistic, ferric, austenitic, duplex, and precipitation hardening grades. They current a logical and properly-organized have a look at the historical past, evolution, and first makes use of of each chrome steel, including detailed descriptions of the related weldability points.

what is 304h stainless steel

In most purposes the steel is used where its corrosion resistance gives lengthy lasting look and repair life. The ease of cleaning and of sustaining a hygienic surface on the metal make it wonderful for many functions. 4) Grade 310/310S is typically utilized in kilns, radiant tubes, tube hangers for petroleum refining and steam boilers, coal gasifier inside components, lead pots, thermowells, refractory anchor bolts, burners, etc A240 SS304H Stainless factory. Here we’ll evaluate SS304 with 316, 303, 201, 310, 430, 409 and extra, explaining from composition, properties, cost and uses. Select the proper CNC machining stainless-steel material as per your requirements. We are a PED accredited producer of SS TP304H Seamless Tubing, 304H stainless-steel tubes in India.

Unlike typical martensitic stainless steels, such as kind 410, 17-4 stainless steel is quite weldable. The power, corrosion resistance and simplified fabrication can make 17-4 stainless steel a cost-effective substitute for high strength carbon steels as well as other stainless grades. It is probably the most versatile and most generally used stainless steel, available in a wider range of merchandise, (bar, sheet, plate, tube, coil, and so forth.) and finishes (Pump shaft quality “PSQ”, Centerless Ground, 2B, and so on), than any other. Grade 304 is instantly brake or roll shaped into a variety of parts for purposes in the industrial, architectural, and transportation fields. Post-weld annealing is not required when welding skinny sections.Grade 304L, the low carbon model of 304, doesn’t require publish-weld annealing and so is extensively used in heavy components .

ASTM A240 Stain Finish Stainless Steel 304H Plate

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Gangsteel mainly products are 304h Square tube,304h stainless,304h 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

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