904L Stainless Steel Bar

JIS G4305

No. 2 D

Those  finished , after cold rolling , by heat treatment , pickling or other  equivalent treatment . In addition , those rolled lightly by matting roll at  the last stage are also included . 

Medical equipment, Food industry, Construction material, Kitchen  utensils.

No. 2 B

Those  finished, after cold rolling, by heat treatment, pickling or other equivalent  treatment and lastly by cold rolling to given appropriate luster.

No. 3

Those finished by polishing  with No. 100 to No. 120 abrasives specified in JIS R 6001.

Kitchen utensils, Building construction.

No. 4

Those finished by polishing  with No. 150 to No. 180 abrasives specified in JIS R 6001.

Kitchen utensils, Building construction,  Medical equipment.    

#240

Those finished by polishing  with No. 240 abrasives Specified in JIS R 6001 .

Kitchen utensils, Electric equipment, Building  construction.    

#320

Those finished by polishing  with No. 320 abrasives Specified in JIS R 6001 .

#400

Those finished by polishing  with No. 400 abrasives Specified in JIS R 6001 .

BA

Those processed with bright  heat treatment after cold rolling.

HL

Those  finished polishing so as to give continuous polishing streaks by using  abrasive of suitable grain size.    

Building Construction.

ASTM A480

No. 2D

Cold-rolled , dull finish ;

A smooth , nonreflective cold-rolled annealed  and pickled or descaled finish . This nondiredtional finish is favorable for  retention of lubricants in deep drawing applications . 

No. 2B

Cold-rolled , bright finish ;

A smooth , moderately reflective cold-rolled  annealed and pickled or descaled finish typically produced by imparting a  final light cold-rolled pass using polished rolls . This general-purpose  finish is more readily polished than No.1 or 2D finishes . 

Bright Annealed

A bright cold-rolled finish retained by final  annealing in a controlled atmosphere furnace . 

A smooth , bright , reflective finish typically  produced by cold rolling followed by annealing in a protective astmosphere so  as to prevent osidation and scaling during annealing . 

No. 3

Intermediate polished finish , one or both  sides . 

A linearly textured finish that may be produced  by either mechanical polishing or rolling . Average surface roughness ( Ra)  may generally be up to 40 micro-inches . ……

No. 4

General purpose polished finish , one or both  sides .

A linearly textured finish that may be produced  by either mechanical polishing or rolling . Average surface roughness ( Ra)  may generally be up to 25 micro-inches . ……

No.6

Dull stain finish , Tampico Brushed , one or  both sides . 

This finish has a soft , satin appearance  typically produced by tampico brushing a No.4 finish . 

No. 7

High luster finish . 

Has a high degree of reflectivity . 

No. 8 

Mirror finish . 

This is a highly reflective , smooth finish  typically produced by polishing with successively finer grit abrasives . Then  buffing . 

TR 

Cold-worked to obtain specified properties  . 

The finish resulting from the cold-rolling of  an annealed and descaled or bright annealed product to obtain mechanical  properties higher tahn that of the annealed condition . 

GB/T  3280-2015

2E

Cold rolled , heat treated  , mechanically descaled . 

Rough and dull .

2D

Cold rolled , heat treated  , pickled or descaled . 

The surface is uniform and matte .

2B

Cold rolled , heat treated  , pickled or descaled ,  skin passed .

Smoother and straighter than 2D surface .

BA

Cold rolled , bright  annealed .

Smooth, shiny and reflective .

3#

Brushed or matte finished  on one or both sides .

No reverse texture, no reflection .

4#

Apply universal polished to  one or both sides .

No directional texture , reflective .

6#

Single side or double side  matte satin finish polished , tan leather research mill .

Matte  and no directional texture .

7#

High gloss surface finished  .

Smooth, high reflectance .

8#

8K super mirror finished .

Directionless texture, high reflectance, clear image .

TR

Cold hardened treatment .

Should be changed according the material and  the cold amount .

HL

Cold rolled, pickled,  leveled, grinded .

Continuous grinding pattern .

EN10028-7    Cold Rolled 

2C

Cold rolled , heat treated  , not descaled . 

Smooth with scale from heat treatment . 

2E

Cold rolled , heat treated  , mechanically descaled . 

Rough and dull .

2D

Cold rolled , heat treated  , pickled .

Smooth .

2B

Cold rolled , heat treated  , pickled , skin passed .

Smoother than 2D .

2R

Cold rolled , bright  annealed .

Smooth , bright , reflective . 

EN10028-7    Special Finishes

1G or 2G

Ground . One surface only ,  unless specifically agreed at the time of enquiry and order . 

As standard showing .

1J or 2J

Brushed or dull polished  . 

Smoother than ground . 

1K or 2K

Stain Polished .

As standard showing .

1P or 2P

Bright polished . 

As standard showing .

2F

Cold rolled , heat treated  , skin passed on roughened rolls .

Uniform non-reflective matt surface .