perbedaan 304 dan 316

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.

There are a number of differences in mechanical properties between 316 and 316L stainless-steel plate. The minimal tensile strength of 316L stainless steel plate is 70 ksi. 316L chrome steel has an elongation of 40%, a hardness of 217 on the Brinell scale and a ninety five on the Rockwell B scale.

The fatigue energy or endurance limit is the stress beneath which material is unlikely to fail in 10 million cycles in air environment. For austenitic stainless as a bunch, the fatigue energy is usually about 35 % of the tensile power.

06cr19ni10 and SUS304 are the common marking methods on the market, among which 06cr19ni10 generally refers to national 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 molybdenum offers 316 higher general corrosion resistant properties than Grade 304, significantly higher resistance to pitting and crevice corrosion in chloride environments. In ASTM A240, sort 316 and 316L is a chromium nickel austenitic metal, Element molybdenum addition can enhances corrosion resistance of stainless-steel, which is the principle factor that 316/316l is more corrosion resistant than 304/304l. When 316L steel of low carbon content material is only somewhat greater than 316 metal on strength degree. Another distinction, 316l can be used for weld therapy as it contains lower carbon.

aisi 304 standard

304 stainless-steel is the commonest type of stainless-steel used all over the world, largely due to its glorious corrosion resistance and worth. It accommodates between 16 and 24 percent chromium and up to 35 p.c nickel, in addition to small amounts of carbon and manganese.

A240 316 v 304 stainless steel plates

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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Both Alloys 316 and 317L are susceptible to precipitation of chromium carbides in grain boundaries when uncovered to temperatures in the 800 to 1500°F (427 to 816°C) vary. Such “sensitized” steels are topic to intergranular corrosion when uncovered to aggressive environments. Where brief intervals of publicity are encountered, nonetheless, similar to in welding, Alloy 317L with its larger chromium and molybdenum content, is extra proof against intergranular assault than Alloy 316 for applications the place gentle gauge material is to be welded. Heavier cross sections over 7/16 inch (eleven.1 mm) usually require annealing even when Alloy 317L is used.

304ss

  • It is instantly brake or roll fashioned into quite a lot of parts for purposes in the industrial, architectural, and transportation fields.
  • 316/316L plate is an effective choice for marine purposes due to a good atmospheric corrosion resistance.
  • 316 chrome steel plate has wonderful forming and welding characteristics.
  • Grade 316 chrome steel plate is the usual molybdenum-bearing grade of chrome steel plate.
  • The molybdenum offers 316 chrome steel plate better overall corrosion resistant properties than grade 304 chrome steel plate.
  • It has particularly higher resistance to pitting and crevice corrosion in chloride environments.

304 metal

At temperatures as high as a hundred and twenty°F (38°C), both types have excellent resistance to larger concentrations. Service tests are usually desirable as working situations and acid contaminants could considerably have an effect on corrosion rate. Where condensation of sulfur-bearing gases occurs, these alloys are much more resistant than different kinds of stainless steels.

The major distinction between 304 vs 316 chrome steel is the composition and corrosion resistance, SS304 doesn’t contain molybdenum whereas SS316 contains 2-3% molybdenum. The addition of molybdenum provides pitting resistance in phosphoric acid, acetic acid and dilute chloride options and provides corrosion resistance in sulfurous acid. In addition, AISI 304 has a 18% Chromium and eight% Nickel content whereas AISI 316 has a 16% Chromium and 10% Nickel. The relationship between 316, 316L and 316H is the same as that between the 304 of stainless steels. Only the carbon contents differentiate 316, 316L and 316H grades . Specifications for another products, notably tube and pipe, have a carbon restrict of 0.035% or 0.040% most for 304L and 316L, however are otherwise the same.

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, 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 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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Because of their application area the “L” grades are most readily available in plate and pipe, however typically also in round bar. In the absence of part welding, or of excessive temperature publicity, the corrosion resistances of the usual and “L” grades are normally equivalent A240-304 stainless steel plates. Low carbon or “L” grades are used to forestall or delay sensitisation of chrome steel at elevated temperatures and the resulting lower corrosion resistance. The problematic temperature zone is oC, encountered throughout welding or particular software 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

A240 316 v 304 stainless steel plates
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