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Detailed introduction about stainless steel plate

Aug.28.2023

Stainless steel plate is generally a general term for stainless steel plate and acid-resistant steel plate. The development of stainless steel plates has laid an important material and technological foundation for the development of modern industry and scientific and technological progress. There are many kinds of stainless steel plates with different properties. It has gradually formed several categories in the development process.

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Stainless steel plate classification:

1. According to the organizational structure, it is divided into four categories: austenitic stainless steel plate, martensitic stainless steel plate (including precipitation hardening stainless steel plate), ferritic stainless steel plate, and austenitic plus ferritic duplex stainless steel plate.

2. According to the main chemical composition of the steel plate or some characteristic elements in the steel plate, it can be divided into chromium stainless steel plate, chromium-nickel stainless steel plate, chromium-nickel-molybdenum stainless steel plate, low-carbon stainless steel plate, high-molybdenum stainless steel plate, high-purity stainless steel plate wait.

3. According to the performance characteristics and uses of the steel plate, it can be divided into nitric acid resistant stainless steel plate, sulfuric acid resistant stainless steel plate, pitting corrosion resistant stainless steel plate, stress corrosion resistant stainless steel plate, high strength stainless steel plate, etc.


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4. Classified by the thickness

Thin plate (0.2mm-4mm)

Middle plate (4mm-20mm)

Thick plate (20mm-60mm)

Extra thick plate (60-115mm)

Common stainless steel thickness tolerance standards

(GB) unit: mm

Width/Thickness

Thickness Tolerance



Higher accuracy (A)

Normal accuracy (B)



>600~1000

>1000~1250

>600~1250


0.05~0.10

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>0.10~0.15

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>0.15~0.25

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>0.25~0.45

±0.040

±0.040

±0.040

>0.45~0.65

±0.040

±0.040

±0.050

>0.65~0.90

±0.050

±0.050

±0.060

>0.90~1.20

±0.050

±0.060

±0.080

>1.20~1.50

±0.060

±0.070

±0.110

>1.50~1.80

±0.070

±0.080

±0.120

>1.80~2.00

±0.090

±0.100

±0.130

>2.00~2.30

±0.100

±0.110

±0.140

>2.30~2.50

±0.100

±0.110

±0.140

>2.50~3.10

±0.110

±0.120

±0.160

>3.10~<4.00

±0.120

±0.130

±0.180

5. According to the production method

hot rolled steel plate

cold rolled steel plate

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6. Classification according to surface features:

Surface

Features

Manufacturing method overview

Uses

NO.1

silver white;dull

Hot rolled to specified thickness

Applications that do not require a glossy finish

NO.2B

Gloss is stronger than NO.2D NO.2D

After treatment, a final light cold rolling pass through polished rolls

General timber

BA

bright as a mirror

No standard, but usually a bright annealed finish with a highly reflective surface.

building materials, kitchen utensils

NO.4

Intermediate grinding

Polished surface obtained by grinding with 150~180# abrasive belt

building materials, kitchen utensils

HL

Hairline Grinding

Appropriate particle material for hairline grinding (150~240#) has a lot of abrasive grains

buildings, building materials

NO.8

mirror grinding

Mirrors are ground with buffing wheels

mirror, decorative

Typical uses of stainless steel plates: pulp and paper equipment, machine equipment, dyeing equipment, film processing equipment, pipelines, external materials for buildings in coastal areas, etc.

Main features of stainless steel plate:

1. Corrosion resistance

Stainless steel has a similar ability to resist general corrosion as the unstable nickel-chromium alloy 304. Prolonged heating in the temperature range of the chromium carbide level may affect the performance of alloys 321 and 347 in harsh corrosive media. Primarily used in high-temperature applications which require the material to have strong resistance to sensitization to prevent intergranular corrosion at lower temperatures.

2. High-temperature oxidation resistance

All stainless steel plates have high-temperature oxidation resistance, but the oxidation rate will be affected by inherent factors such as exposure environment and product shape.


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