Surface finish

Definition

Application

2B

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

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

BA/8K Mirror

Those processed with bright heat treatment after cold rolling.

Kitchen utensils, Electric equipment, Building construction.

No.3

Those finished by polishing with No.100 to No.120 abrasives specified in JIS R6001.

Kitchen utensils, Building construction.

No.4

Those finished by polishing with No.150 to No.180 abrasives specified in JIS R6001.

Kitchen utensils, Building construction, Medical equipment.

Hairline

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

Building Construction.

No.1

The surface finished by heat treatment and pickling or processes corresponding there to after hot rolling.

Chemical tank, pipe.

Material

C

Si

Mn

P

S

Cr

Ni

201

≤0.12

≤0.75

9.5-12.5

≤0.045

≤0.03

13-16

0.8-1.5

304

≤0.08

≤0.75

≤2.0

≤0.045

≤0.03

18-19

8-10

316

≤0.08

≤1.00

≤2.0

≤0.035

≤0.03

10-14

16.0-18.5

316L

≤0.03

≤1.0

≤2.0

≤0.035

≤0.03

16-18

10-14

430

≤0.12

≤0.75

≤2.0

≤0.04

≤0.03

16-18

≤0.6