stainless steel grades 304 316

Gangsteel produce ASTM A240 304 Stainless steel plates, S30400, A240 Type 304 Stainless steel cutting parts by water cutting, cutting and cnc cutting. ASTM a240 ( 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.

One of the methods to combat this phenomenon is to lower the carbon content material in steel to decrease the carbide precipitation. 304L SS is an example of such metal; the “L” in 304L is for “Lower carbon” (.030% max vs. .080% max for 304 steel).

astm 304l

  • The steels were developed to resist assault of luxurious acid compounds.
  • Polythionic acid SCC has occurred n oil refinery environments where sulfides are common.
  • The stabilized Type 321 alloy offers a solution to polythionic acids SCC by resisting sensitization during elevated temperature service.
  • On cooling to room temperature in a sulfide-containing environment, the sulfide reacts with moisture and oxygen to kind polythionic acids which connect the sensitized grain boundaries.
  • SS 317 / SS317L These are austenitic stainless steels that are modifications of sort SS 316 / SS 316L and supply elevated chromium, nickel and molybdenum ranges for improved corrosion.

General Corrosion The Type 321 alloy presents comparable resistance to basic, general corrosion as the unstabilized chromium nickel Type 304. Heating for long intervals of time within the chromium carbide precipitation vary might have an effect on the final resistance of Type 321 in corrosive media. SS 321H is the version of alloy 321 with 0.04 – 0.10 higher carbon content.

ss321 vs ss304

Furthermore, it’s the temperature at which titanium combines with carbon to type harmless titanium carbides. The result is that the chromium is restored to solid solution and carbon is forced into combination with titanium as innocent carbides. Matching metals can be found for welding Type 321 stabilized stainless steel. Stabilized alloys could also be joined to other stainless steels or carbon steels.

Stainless steel are iron-based mostly alloys usually containing at least 11.5% chromium. Other parts, Nickel being probably the most Important, may be added in combination with chromium to obtain particular properties. As one of the world’s premier distributors of steel pipes, bars, flanges, and fittings, we’ve equipped clients everywhere in the world. Offering a variety of austenitic alloys, we’re certain to have something that suits your purposes. Do you could have a necessity for austenitic stainless-steel, like alloys 304, 309, 310, 321, or 316? Are you looking for austenitic chrome steel parts? While they’re not exactly the most formable stainless steels in existence, austenitic stainless steels are still fairly formable.

jindal ss 304

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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Columbium stabilized stainless steels are extra vulnerable to scorching cracking than titanium stabilized stainless steels. It is essential to take care of the level of stabilizing element current in Type 321 during welding.

astm a312 tp304 specification

They can be pressed and shaped to meet a variety of totally different of configurations. These classes embody ferritic stainless steels, austenitic stainless steels, martensitic stainless steels, duplex stainless steels, and precipitation-hardening stainless steels. SS 434 A ferritic chrome steel similar to SS 430 but containing Mo. It is widely used for exterior automotive moulding and trims and functions the place improved corrosion. resistance to pitting assault from varied de-icing chemical substances is required. Spiral wound gasket Is formed by the V-shaped or W-shaped stainless steel belt and non-metallic filler through lamination, spiral winding, and spot welding of the tops and ends. Its extensively utilized in petrochemical, equipment, electrical energy, metallurgy, shipbuilding, medicine, atomic energy, aerospace and other fields.

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.

jindal 304 steel price

A240 304L Stainless steel plates

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, 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 .
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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The annealing temperature vary for Type 321 is 1800 to 2000° F (928 to 1093° C). As emphasised, nonetheless, annealing within the 800 to 1500° F (427 to 816° C) temperature vary doesn’t lead to a susceptibility to intergranular assault. We are engaged in producing and promoting stainless steel, put on resistant steel plate, weathering steel plate, excessive strength carbon metal plate, alloy metal, and Pressure vessel metal plate, we aslo produce metal pipes, coils and so forth. It is the most commonly used stainless-steel class in existence, accommodating an basically infinite record of applications. At the primary look, Stainless Steel 304 is very similar to Stainless Steel 321. When evaluating the chemical composition of SS 321 and SS 304, it is clear that the chromium and nickel ranges of those alloys are very related. Let us further talk about their chemical components, physical and mechanical properties and makes use of.

Exposure of non-stabilized austenitic stainless steel to temperatures in the sensitizing vary will trigger the precipitation of chromium carbides at grain boundaries. On cooling to room temperature in a sulfide-containing environment, the sulfide reacts with moisture and oxygen to kind polythionic acids which attach A240-304 stainless steel plates the sensitized grain boundaries. Polythionic acid SCC has occurred n oil refinery environments where sulfides are widespread. The stabilized Type 321 alloy offers a solution to polythionic acids SCC by resisting sensitization throughout elevated temperature service.

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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

ss321 vs ss304
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