显示标签为“stainless steel 304”的博文。显示所有博文
显示标签为“stainless steel 304”的博文。显示所有博文

2014年9月4日星期四

Chemical composition of stainless steel sheet introduction

Acid resistant stainless steel is called stainless steel sheet, which is composed of two parts, stainless and acid resistant 430 stainless steel sheets , in a nutshell, atmospheric corrosion resistant steel is called stainless steel sheet, and resistance to chemical corrosion of steel called acid resistant steel. Generally speaking, with Ge content greater than 12% steel with stainless steel stainless steel sheet according to the microstructure after heat treatment can be divided into five categories: ferrite stainless steel sheets , martensitic stainless steel, austenitic stainless steel, Austenitic - ferritic stainless steel and precipitation of carbide stainless steel. Because stainless steel sheet has excellent corrosion resistance, formability, compatibility and in a wide temperature range, strong stainless steelp late suppliers  series features, so obtained wide application in heavy industry, light industry, household goods industry and construction industry.

2014年3月27日星期四

Precipitation hardening stainless steel sheets

Precipitation hardening stainless steel can be divided according to their organization martensitic precipitation hardening qiyi 304 stainless steel sheet ( as represented in 0Crl7Ni4Cu4Nb ) , semi-austenitic precipitation hardening stainless steel ( as represented in 0Crl7Ni7Al and 0Crl5Ni25Ti2MoVB ) plus ferritic and austenitic precipitation hardening stainless steel ( with PH55A , B, C as a representative ) . The use of such material after the aging heat treatment to precipitate Cu, Al, Ti, Nb , etc. to increase the strength of a metal compound material . The main features are:
1 , this type of stainless steel can be adjusted by means of the performance of the heat treatment process , so that the molding of the steel , the device manufacturing process is easy to process and easy forming tissue state . By semi-austenitic precipitation hardening stainless martensitic transformation and precipitation hardening austenitic , martensitic precipitation hardening qiyi stainless steel 304 by precipitation hardening treatment so as to have high strength and good toughness .
2 , chromium content of about 17% , plus contain nickel , molybdenum and other elements , therefore , in addition to having enough sex outside of stainless , corrosion resistance is close to 18-8 austenitic stainless steel.