有关SF20T的相关资料

gaimingle

哪位大虾有SF20T材料的相关资料
# w, U1 D9 S$ ?希望分享一下
: X+ M" i" K/ n0 a谢谢了

dljdw

SF20T(product of Shimomura Tokushu Seiko Co., Ltd.) is used as standard lens holder material
in our products.
" _, j6 |/ o2 z/ T% j9 eThis is developed to improve anticorrosion of SUS430(ferritic stainless steel) and has achieved
$ ^& b1 E- s& Z7 G' ?% [# m4 Manticorrosion near SUS304 by 20%Cr-2%Mo.
Currently, it is near SUS444, but is not applied to JIS(Japanese Industrial Standard) steel grade.
$ H$ S! K6 I* q# X! XSF20T is free-cutting stainless steel of low-carbon ferritic series.
" y" h' L5 w) r2 F! k) y* bCharacteristic
　☆Machinability
: F7 N) H% d" A5 \$ N　　　　SF20T has an equivalent or greater machinability than JIS SUM24L(heavy free-cutting) and
near at brass.
　☆Anticorrosion
* Q3 M8 @" e+ ?  X) c1 iIn usual atomosphere, the anticorrosion is the order of bellow.
# h( T* y2 H8 ^) Q( A　　　　 High SUS304＞SF20T=SUS303＞SUS430　Low.
! C- w8 y& a( x5 Q2 L, B$ pAnd SF20T has an enough anticorrosion.
) f2 J/ E9 |, B: z/ Z9 l　☆Magnetic characteristic
: S' A$ ~; P  l( B# X9 d　　　　SF20T which have high permeability and low coercive force, can be used as an electromagnetic
3 Z/ P$ }- m$ k5 |' r4 Fstainless steel.
% L. f3 H. F) J. a' Z: A( [- s( ^6 y　☆Cold processing (Caulking)
: e+ p  A7 C" b5 I　　　　Cold processing of SF20T is more excellent than SUS303.
　☆Welding
, }( Z' |5 f- K  J% ?* ^/ L% L( I) o* f　　　　Welding of SF20T is inferior to SUS304 for added free-cutting ingredient.
However, SF20T is many used to the brazing and spot-welding.
And it is not problem at the plasma-welding test.