mechanical properties:

Tensile strength     σb (MPa)

Conditions yield strength 0.2 sigma (MPa)

Elongation δ5 (%)

Section shrinkageψ (%)

Hardness

520

205

40

60

≤187HB ≤90HRB ≤200HV

Surface 

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

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.

HL

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.