202 ss steel grade

Gangsteel produce ASTM A240 304 Stainless steel plates, S30400, A240 Type 304 Stainless steel cutting parts by water cutting, laser cutting and cnc cutting. ASTM a240 (chromium and chromium nickel stainless steel plate, sheet, and strip for pressure essels and general applications. a240 304 stainless steel is a common material in stainless steel with a density of 7.93g/cm3, which is also called 18 / 8 stainless steel in the industry. High temperature resistant 800 ��, with good processing performance and high toughness, it is widely used in industry, furniture decoration industry and food and medical industry.

Cooling should be sufficiently speedy via the 1500 to 800°F (816 to 427°C) range to keep away from reprecipitation of chromium carbides and supply optimum corrosion resistance. In each case, the metal must be cooled from the annealing temperature to black heat in less than three minutes.

aisi 304 a2

• For the Alloys 316 and 317L the solution anneal is accomplished by heating in the 1900 to 2150°F (1040 to 1175°C) temperature vary adopted by air cooling or a water quench, relying on part thickness.
• This mixture of properties is the explanation for the intensive use of these alloys which characterize nearly one half of the whole U.S. chrome steel manufacturing.
• The 18-eight stainless steels, principally Alloys 304, 304L, and 304H, can be found in a wide range of product forms including sheet, strip, and plate.
• Cooling must be sufficiently speedy by way of the 1500 to 800°F (816 to 427°C) range to avoid reprecipitation of chromium carbides and provide optimum corrosion resistance.
• In addition to glorious corrosion resistance and power properties, the Alloys 316 and 316L Cr-Ni-Mo alloys additionally provide excellent fabricability and formability that are typical of the austenitic stainless steels.

ASTM A Sheets is likely one of the most versatile and generally used chrome steel grades in the market. This grade is an austenitic chromium alloy and it holds various outstanding features. This grade of sheet holds numerous features like heat resistance, corrosion resistance, superior ending, good power and toughness at cryogenic temperature and plenty of more. In addition to wonderful corrosion resistance and energy properties, the Alloys 316, 316L, and 317L Cr-Ni-Mo alloys also present the wonderful fabricability and formability that are typical of the austenitic stainless steels.

304 metal

astm a479 304

ASTM A240 specification covers chrome steel plates, sheets and strips for stress vessels and general purposes. This specification covers chemical composition and mechanical properties for varied grades of ferritic, austenitic, martensitic, duplex, tremendous duplex and excessive moly stainless steel alloys. Both grades are austenitic stainless-steel which is among the most widely used and versatile type of metal. As 304/304L stainless steel plates & sheets have excellent corrosion resistance, 316/316L plates have higher nickel content than 304 and 304L SS sheets giving them even higher corrosion resistance especially in marine purposes. The austenitic stainless steels are offered within the mill annealed situation ready to be used. Heat remedy may be needed during or after fabrication to take away the consequences of chilly forming or to dissolve precipitated chromium carbides resulting from thermal exposures. For the Alloys 316 and 317L the solution anneal is achieved by heating in the 1900 to 2150°F (1040 to 1175°C) temperature vary adopted by air cooling or a water quench, depending on section thickness.

Product Type	A 240 304 Sheet, A 240 304 Plate
SS 304 ASTM Standard Specification	ASTM A240 / ASME SA240
Thickness	0.1 to 3000 mm Thk
Width	10-2500mm
Length	2m, 2.44m, 3m, or as required
Finish	2B, 2D, BA NO (8), Cold rolled sheet (CR), Hot rolled plate (HR), SATIN (Met with Plastic Coated), No.1 finish hot rolled, 1D, 2B, No.4, BA, 8K, satin, hairline, brush, mirror etc.
Hardness	Half Hard, Soft, Hard, Quarter Hard, Spring Hard
Form	Sheet, Plate, Strip, Flats, Clad Plate, Coils, Foils, Plain Sheet, Flat Shim, Flat Sheet, Shim Sheet, Rolling Sheet, Rolling Plate, Rolls, Blank (Circle), soft annealed, descaled, tread plate, sheared, annealed, Checker Plate

A240 304 Stainless Application scope

System description: A240 304 stainless steel is the most widely used chromium-nickel stainless steel. As a widely used steel, it has good corrosion resistance, heat resistance, low temperature strength and mechanical properties; it has good hot workability such as stamping and bending.
, No heat treatment hardening phenomenon (use temperature -196℃～800℃).
Corrosion resistant in the atmosphere, if it is an industrial atmosphere or heavily polluted areas, it needs to be cleaned in time to avoid corrosion.
It is suitable for food processing, storage and transportation.
Has good processing properties and weldability.
Plate heat exchangers, bellows, household products (category 1, 2 tableware, cabinets, indoor pipelines, water heaters, boilers, bathtubs), auto parts (windshield wipers, mufflers, molded products), medical appliances, building materials, chemicals, food industry
, Agriculture, ship parts, etc.
304 stainless steel is a nationally recognized food grade stainless steel.

A 240 Gr 304 Mechanical Properties

Grade	ASME SA240 304 Mechanical Strength
	Yield	Tensile	Elongation	Hardness, max
ASME SA240 304	Min Mpa	Mpa	Min  %	Brinell	Rockwell B
	205	515	40%	201	92

 
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A 240 Gr 304 Chemical Composition

Plate Grade	The Element Maximum (%)
	C	Mn	P	S	Si	Cr	Ni
ASME SA240 304	0.08	2.00	0.045	0.030	0.75	18.0-20.0	8.0-10.5
	Mo	N	Cu
		0.10

For a240 304 stainless steel, the Ni element in its composition is very important, which directly determines the corrosion resistance and value of 304 stainless steel.

The most important elements in 304 are Ni and Cr, but they are not limited to these two elements.
Specific requirements are stipulated by product standards.
The common judgment in the industry is that as long as the Ni content is greater than 8% and the Cr content is greater than 18%, it can be considered as 304 stainless steel.
This is why the industry calls this type of stainless steel 18/8 stainless steel.
In fact, the relevant product standards have very clear regulations on 304, and these product standards have some differences for different shapes of stainless steel.
Below are some common product standards and tests.

 

ASTM A240 Equivalent AISI 304 stainless steel sheet

a 240 gr	JIS G4304	ASTM	UNS	KS	EN 10095	AS	CNS
a 240 gr 201	SUS201	201	S20100	STS201	1.4372	201-2	201
a 240 gr 202	SUS202	202	S20200	STS202	1.4373	–	202
a 240 gr 301	SUS301	301	S30100	STS301	1.4319	301	301
a 240 gr 304	SUS304	304	S30400	STS304	1.4301	304	304
a 240 gr 304L	SUS304L	304L	S30403	STS304L	1.4306	304L	304L
a 240 gr 304N	SUS304N1	304N	S30451	STS304N1	1.4315	304N1	304N1
a 240 gr XM21	SUS304N2	XM21	S30452	STS304N2	–	304N2	304N2
a 240 gr 304LN	SUS304LN	304LN	S30453	STS304LN	–	304LN	304LN

 

A240 304 stainless steel plate property requirement.

Tensile strength σb (MPa)≥515-1035

Conditional yield strength σ0.2 (MPa)≥205

Elongation δ5 (%)≥40

Reduction of area ψ (%)≥?

Hardness: ≤201HBW; ≤92HRB; ≤210HV

Density (20℃, g/cm³): 7.93

Melting point (℃): 1398~1454

Specific heat capacity (0~100℃, KJ·kg-1K-1): 0.50

 

ASTM / AISI/ SAE, DIN, Werkstoff grades or equivalents:

ASTM	BS 970 1991	AISI / SAE	Werkstoff
A240 SS 304L	304S11	304L	1.4306
A240 SS 304	304S15	304	1.4301
A240 SS 316L	316S11	316L	1.4404
A240 SS 316L	316S13	316L	1.4435
A240 SS 316	316S31	316	1.4401
A240 SS 316	316S33	316	1.4436

 

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Product standard a240 304 stainless steel:For a240 304 stainless steel, the Ni element in its composition is very important, which directly determines the corrosion resistance of 304 stainless steel and its value.The most important elements in 304 are Ni and Cr, but they are not limited to these two elements. Specific requirements are specified by product standards. It is considered that 304 stainless steel can be considered as long as Ni content is more than 8% and Cr content is more than 18%. This is why the industry will call this kind of stainless steel 18 / 8 stainless steel. In fact, the relevant product standards have very clear provisions for 304, and these product standards have some differences for different shapes of stainless steel. Here are some common product standards and tests.

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Because of its tolerance for corrosive mediums, 316 and 316L stainless steel plate is utilized in marine surroundings as nicely. Another common use for 316 and 316L stainless steel plate is in the manufacturing and use of strain vessels, tanks, heat exchangers, piping methods, flanges, fittings valves and pumps. Additional areas where A240-304 stainless steel plates 316 and 316L chrome steel plate is often utilized is within the production of lab gear and in chemical processing and storage. 316 and 316L chrome steel plate can be found in air pollution management equipment and mining tools such as screens.

Alloy 317L containing 3 to 4% molybdenum is most popular to Alloys 316 or 316L which include 2 to three% molybdenum in functions requiring enhanced pitting and common corrosion resistance. For the Alloys 316 and 317L the answer anneal is achieved by heating within the 1900 to 2150°F (1040 to 1175°C) temperature vary followed by air cooling or a water quench, relying on part thickness.

For functions the place heavy cross sections cannot be annealed after welding or where low temperature stress relieving treatments are desired, the low carbon Alloys 316L and 317L can be found to keep away from the hazard of intergranular corrosion. This provides resistance to intergranular assault with any thickness in the as-welded condition or with quick durations of exposure within the 800 to 1500°F (427 to 826°C) temperature range. Where vessels require stress-relieving remedy, brief therapies falling within these limits can be employed with out affecting the normal glorious corrosion resistance of the steel.

06cr19ni10 and SUS304 are the common marking methods on the market, among which 06cr19ni10 generally refers to national standard production, 304 generally refers to ASTM standard production, and SUS 304 refers to Japanese standard production.
304 is a kind of universal stainless steel, which is widely used to make equipment and parts with good comprehensive performance (corrosion resistance and formability). In order to maintain the inherent corrosion resistance of stainless steel, the steel must contain more than 18% chromium and more than 8% nickel. The stainless steel is produced according to ASTM 304.

The Alloys 304, 304L, and 304H austenitic stainless steels provide useful resistance to corrosion on a variety of reasonably oxidizing to reasonably lowering environments. The alloys are used extensively in tools and utensils for processing and handling of meals, beverages, and dairy merchandise. Heat exchangers, piping, tanks, and different process tools involved with contemporary water also utilize these alloys.

Grade 316 stainless-steel plate is the standard molybdenum-bearing grade of stainless-steel plate. The molybdenum gives 316 stainless-steel plate higher general corrosion resistant properties than grade 304 chrome steel plate. It has significantly greater resistance to pitting and crevice corrosion in chloride environments.

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In order to determine whether a material is 304 stainless steel, it must meet the requirements of each element in the product standard. As long as one does not meet the requirements, it cannot be called 304 stainless steel. Gangsteel produce A240 304 Stainless steel plate, if you have requirement for stainless steel plate, please feel free to contact us by admin@gangsteel.com