a2 304

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.

Unfortunately, once initiated, pitting corrosion propagation is speedy for each grades, and sensible number of stainless steels aims to avoid pitting corrosion quite than obtain low propagation rates. Grade S32750 is an excellent duplex stainless-steel containing 25% chromium, 7% nickel and 4% molybdenum. It has the very best resistance to pitting and crevice corrosion of the duplex grades, with excessive resistance to emphasize corrosion cracking and really excessive strength.

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.

stainless steel 304 cost per kg

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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Martensitic stainless are usually not suitable for welding, nevertheless, some martensitic chrome steel grades with decrease amounts of carbon can be welded. With precipitation hardened stainless steels, care should be taken to ensure that the original mechanical properties are not compromised through the welding course of. What makes the grade 316 alloy a perfect meals grade metal sheet material is the fact that it has a excessive resistance to acids, alkalis, and chlorides .

Ferritic grades canot be strengthened by heat treatment, and are not a lot strengthened by cold work, so they’re normally used in the annealed condition. This group contains 12% to 16% chromium and 0.08% to 2.00% carbon. The excessive carbon content material makes the martensitic grades reply properly A240-304 stainless steel plates to heat therapy to provide excessive mechanical strength and hardness. However, the carbon is detrimental when welding and these grades are difficult to weld. The ductility of those grades is restricted and they aren’t chilly labored.

There can also be “Pitting Corrosion” which is normally caused by acid chloride. Chromium is removed from the stainless steel leaving only iron. As the chromium is dissolved chlorides bore into the stainless making a smooth wall pit. When molybdenum is added to the stainless-steel the pitting corrosion resistance improves. SS 409 It is the lowest alloyed straight Chromium ferritic stainless-steel. It replaces carbon steels the place some quantity of heat or corrosion. resistance and higher power are required and the place appearances secondary.

aisi 303 304

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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a2 stainless steel grade

Other austenitic stainless steels, corresponding to grade 304 SS, can expertise severe pitting corrosion when uncovered to salt, which is often present in food products. In comparison, the 400-collection of stainless steels are all ferritic steels. These are less formable, less weldable, and don’t do properly at cryogenic temperatures. Still, some types, just like the 430, have glorious corrosion resistance and are very warmth tolerant.

They are strong, with twice or more the yield strength of the frequent austenitic grades, and are highly resistant to chloride stress corrosion cracking. The greater alloyed grades have excellent resistance to pitting and crevice corrosion in lots of environments. The duplex grades are not heat treatable and have a low response to chilly work, so are used within the annealed situation. They are easy to weld and fabricate, though not as simple as the austenitic grades. Ferritic stainless steels are cheaper than the austenitic steels and have superb corrosion resistance. Their ductility and toughness just isn’t comparable with that of the austenitic steels. Martensitic stainless steels can have carbon contents starting from 0.1 to 1%.

• This group of stainless steels sometimes consists of equal elements of austenite and ferrite.
• However, the carbon is detrimental when welding and these grades are tough to weld.
• The ductility of these grades is limited and they aren’t chilly labored.
• The high carbon content makes the martensitic grades respond well to heat therapy to offer excessive mechanical energy and hardness.
• This group contains 12% to 16% chromium and 0.08% to 2.00% carbon.

Molybdenum increases the corrosion resistance of this chromium-nickel alloy to face up to assault by many industrial chemical compounds and solvents, plus inhibits pitting brought on by chlorides. Molybdenum is among the single most helpful alloying additives within the struggle towards corrosion.

The high chromium content material of 445M2 provides excellent oxidation resistance, and related grades are used extensively in automotive muffler techniques. 445M2 can be utilized in air up to 980ºC for continuous service, 1035ºC for intermittent service. The high temperature energy of ferritic grades is generally lower than that of austenitic grades. Where later ambient temperature toughness and corrosion resistance are necessary, the service temperature must be restricted to 400ºC to avoid precipitation reactions. Grade 445M2 contains 22% of chromium and over 1% of molybdenum, which give it excellent resistance to corrosion in most environments. 445M2 has no less than the corrosion resistance of grade 316, and is increasingly replacing 316 in sheet steel applications.

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304 stainless steel matweb

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