How many types of Buxiu steel plates are there?

Introduction How many types of Buxiu steel plates are there? Common grades of stainless steel are: 1. Classification according to metallographic structure 1. Common austenitic stainless steel: (stainless steel with austenitic structure at room temperature, among steel

How many types of Buxiu steel plates are there?

Common grades of stainless steel are:

1. Classification according to metallographic structure

1. Common austenitic stainless steel: (with austenitic structure at room temperature) Stainless steel, steel contains about 18% Cr, 8% to 10% Ni and C less than 0.1%, including Cr and Ni content , and is a high Cr-Ni series steel developed by adding elements such as Mo, Cu, Si, Nb, Ti, etc. , with stable austenitic structure)

Commonly used abbreviations for numerical codes of new and old grades

06Cr19Ni10 0Cr18Ni9 S30408 ​​​​304

022Cr19Ni10 00Cr19Ni10 S30403 304L

06Cr25Ni20 0Cr25Ni20 S30408 ​​​​310S

06Cr18Ni11Ti 0Cr18Ni10Ti S32168 321

06Cr17Ni12Mo2 0Cr1 7Ni12Mo2 S31608 316

06Cr17Ni12Mo2 00Cr17 Ni14Mo2 S31603 316L

…… ………………

2. Ferritic stainless steel (stainless steel with a predominantly ferrit structuree during use. The chromium content is 11% to 30% and has a body-centered cubic crystal structure.)

Numerical code of new grade and old grade

06Cr13Al 0Cr13Al S11348

06Cr13 0Cr13 S11306

………..

3. Martensitic stainless steel (stainless steel that is dominated by a martensitic structure during use and whose mechanical properties can be adjusted by heat treatment. In simple terms, it is a type of hardenable stainless steel.)

Such as: 2Cr13, 3Cr13, 4Cr13

………………..

4. duplex stainless steel (austenitic-ferritic - Ferritic duplex stainless steel: This is a stainless steel with approximately half austenite and ferrite structures each. When the C content is low, the Cr content is 18% to 28%, and the Ni content is 3% to 10%. Some steels also contain Mo, Cu, Si, Nb, Ti, N and other el.alloy elements)

New grade code

0.22Cr22Ni5Mo3N S22253

022Cr25Ni6Mo2N S22553

022Cr23Ni5Mo3N S22053

…………

National reference standard: GB/T24511-2009 Pressure equipment Stainless steel plates and strips

GB/T3270-2007 Rolled stainless steel plates and strips cold

GB/T21833-2008 Duplex steel tubes

GB13296- 2007 Seamless stainless steel tubes for boilers and heat exchangers

GB /T14976-2002 Stainless steel tubes for transporting fluids

2. Classification according to foreign chemical composition: 200, 300, 400. series classification

Stainless steel 200 series: 201, 202 (chromium, nickel, manganese-austenitic stainless steel)

Stainless steel 300 series: 301, 302, 302HQ, 303, 304, 305, 304L, 304F, 304HC, 316, 316L, 316F, 316S, 316Ti, 310, 310S, 314, 314L, 317L , 321 (steel chrome stainless steel, nickel-austenitic)

Steel istainless steel 400 series: 410, 420, 420J2, 434, 430, 430F, 431 (ferritic and martensitic stainless steel)

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