Standard of new name of 2008 edition stainless steel

Announced recently, domestic steelworks issued standard of stainless steel new name, through trade off study, on new name and old name label do not have basically too upheaval, main chemical element label did not change, only carbolic content label and individual steel plant inside chemical element happens fluctuant:

1, carbon (C) content marks

(1) old name: 1000 when the number before Cr shows carbon content. Be like 201 (1Cr17Mn6Ni5N) : Carbon (C) content one thousandth; 2Cr13 (420) , 7Cr17 (440A) , express carbon respectively (C) content 2 millesimals with 7 millesimals; If C ≤ 0.08% for low carbon, the label is " 0 " , be like (304) 0Cr18Ni9; C ≤ 0.03% to exceed low carbon, the label is " 00 " , be like 00Cr17Ni14Mo2 (316L) .

(2) new name: The number before Cr shows carbon (C) extremely content. If 201 brands are 12Cr17Mn6Ni5N, express carbon (C) content extremely (0.12% ) ; 304 brands are 06Cr19Ni10, express carbon (C) content extremely (0.06% ) ; 316L brand is 022Cr17Ni12Mo2, express carbon (C) content extremely (0.022% ) . Other label is basic and changeless.

The carbon in new name (C) content than more clear before, to the product manufacturing technology also had higher demand.

2, content of individual ability qualitative raw material happens adjust

Raw material content produces fluctuant partial steel to plant quite:

304 in the content of Cr and Ni rose respectively 1 dot; The content of the Ni in 316L rises 2 dot; 444 in Cr content rose to nod and join Nb, Ti 1 microelement; 321 in Ni content reduced 1 point; Content of the Ni in 304N1 reduced 1 point.

Each steel is planted between the adjustment that made different pitch, nickel adjusts extent scale in abstruse type style bigger.