303 304 stainless steel
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.
Type 304, with its chromium-nickel content material and low carbon, is the most versatile and extensively used of the austenitic stainless steels. Its alloys are all modifications of the 18% chromium, 8% nickel austenitic alloy. Type 304 proves to be resistant to oxidation, corrosion, and durability. All present ease of fabrication and cleansing, prevention of product contamination provide a variety of finishes and appearances. Due to its non-reactive qualities, 316 stainless-steel can be used in the manufacture of medical surgical devices.
It is the most versatile and most generally used chrome steel out there, despite the fact that a wide range of alternate options are available; and has wonderful forming and welding characteristics. The balanced austenitic structure of Grade 304 enables it to be severely deep drawn with out intermediate annealing. This means that this grade metal is dominant in the manufacture of drawn stainless parts such as sinks, hole-ware and saucepans.
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Product Type |
A 240 304 Sheet, A 240 304 Plate |
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SS 304 ASTM Standard Specification |
ASTM A240 / ASME SA240 |
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Thickness |
0.1 to 3000 mm Thk |
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Width |
10-2500mm |
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Length |
2m, 2.44m, 3m, or as required |
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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. |
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Hardness |
Half Hard, Soft, Hard, Quarter Hard, Spring Hard |
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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 |
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Yield |
Tensile |
Elongation |
Hardness, max |
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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 (%) |
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C |
Mn |
P |
S |
Si |
Cr |
Ni |
|
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ASME SA240 304 |
0.08 |
2.00 |
0.045 |
0.030 |
0.75 |
18.0-20.0 |
8.0-10.5 |
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Mo |
N |
Cu |
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0.10 |
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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 |
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a 240 gr 202 |
SUS202 |
202 |
S20200 |
STS202 |
1.4373 |
– |
202 |
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a 240 gr 301 |
SUS301 |
301 |
S30100 |
STS301 |
1.4319 |
301 |
301 |
|
a 240 gr 304 |
SUS304 |
304 |
S30400 |
STS304 |
1.4301 |
304 |
304 |
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a 240 gr 304L |
SUS304L |
304L |
S30403 |
STS304L |
1.4306 |
304L |
304L |
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a 240 gr 304N |
SUS304N1 |
304N |
S30451 |
STS304N1 |
1.4315 |
304N1 |
304N1 |
|
a 240 gr XM21 |
SUS304N2 |
XM21 |
S30452 |
STS304N2 |
– |
304N2 |
304N2 |
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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 |
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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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304 stainless can also be cheaper in value compared to 316, another excuse for its reputation and widespread use. Grade 304 chrome steel is superb in a wide range of atmospheric environments and many corrosive media. It is subject to pitting and crevice corrosion in heat chloride environments, and to emphasize corrosion cracking above 60 °C . Grade 304 is considered to be proof against potable water as much as approximately 200 mg/L chlorides at ambient temperatures, decreasing to approximately150 mg/L at 60 °C. Grade 304 chrome steel is mostly considered the commonest austenitic stainless steel. It contains excessive nickel content material that’s usually between 8 and 10.5 p.c by weight and a high amount of chromium at approximately 18 to 20 % by weight.
- The key difference is that 316 stainless steel incorporates about 2 to three % molybdenum.
- The addition increases corrosion resistance, notably towards chlorides and other industrial solvents.
- The higher molybdenum content material results in grade 316 possessing elevated corrosion resistance.
- It has virtually the identical physical and mechanical properties as 304 stainless steel, and incorporates an analogous material make-up.
- The elevated nickel content material and the inclusion of molybdenum makes grade 316 chrome steel a bit costlier than grade 304 per ounce of fabric.
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.
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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Molybdenum is a chemical component used for the strengthening and hardening of metal. Its main operate in stainless 316 is to assist fight off corrosion from chlorides. Stainless 316 accommodates A240-304 stainless steel plates more nickel than stainless 304, while 304 contains extra chromium than 316. Stainless 304 normally consists of 18% chromium and eight% nickel.
If your application makes use of milder acids or does not comprise salt publicity, stainless 304 is ideal. Below we record some widespread applications for each grades of steel. Did you realize that 304 and 316 are the preferred and extensively used kinds of chrome steel? From the naked eye, it may be extremely difficult to tell the distinction between grades of stainless-steel.
Other major alloying components embody manganese, silicon, and carbon. a Japanese JIS Standard and one of the most regularly used stainless steels, comprising 18% Cr and eight% Ni. 304 stainless steel is the commonest type of stainless steel used all over the world due to wonderful corrosion resistance and worth.304 can withstand corrosion from most oxidizing acids. That durability makes 304 simple to sanitize, and therefore ideal for kitchen and food functions. Grade 316 has especially higher resistance to salt and chloride pitting.
astm a240 type 304l
Grade 304 is considered to be resistant to drinking water at ambient temperatures as much as about 200 mg / L of chloride, decreasing it to about 150 mg / L at 60 ° C. While both 304 and 316 grade stainless steels are immune to corrosion, 316 grade stainless steel supplies a higher diploma of corrosion resistance than 304 grade steel as a result of it includes molybdenum in its composition. As a result, 316 grade stainless-steel is healthier suited to resisting extreme environmental conditions like salt water, de-icing salts, brine options and exposure to chemical substances. Though 304 grade stainless steel will resist corrosion for a time, it’s going to ultimately begin to tarnish. High ductility, glorious drawing, forming, and spinning properties.
Since sterilization processes in these industries mix each strong disinfectants and or with excessive temperatures to forestall contamination, a resistant alloy such as grade 316 is ideal. In different phrases, you possibly can expose grade 304 alloy metal to temperatures of as much as 1,598 °F for brief durations of time with out sick impact, and for prolonged periods of time in temperatures of up to 1,697 °F. However, this can compromise the corrosion resistance of the steel, making it extra vulnerable to corrosion damage from publicity to moisture. is the most versatile and the most widely used of all stainless steels. Its chemical composition, mechanical properties, weldability and corrosion/oxidation resistance present the most effective all-round performance chrome steel at relatively low cost.
304 grade stainless steel
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304 1.4301
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