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Austenite

Grade Characteristic Appliance

Chemical composition

Mechanical properties

C Cr Ni Mo Others YP TS EL HV
301

High strength by cold working

Seat belt, spring

≤0.15

16~18

6~8

- -

≥205

≥520

≥40

≤218

301L

excellent intergranular corrosion
resistance, excellent welding
Properties compared to 304

Structural material
of train

≤0.03

16~18

6~8

-

N≤0.2

≥215

≥550 ≥45 ≤218
304

Stainless steel for general
use

General use

≤0.08

18~20

8~10.5

- -

≥205

≥520 ≥40 ≤200
304L

excellent intergranular corrosion  resistance
compared to 304

Machinery and tools used in chemical, LNG tank

≤0.03

18~20

9~13

- -

≥175

≥480 ≥40 ≤200
304N1

Increase the strength without reducing a ductility by adding N in 304

Street light,water pipe

≤0.08

18~20

7~10.5

-

N 0.1~0.25

≥275

≥550 ≥35 ≤220
304J1

Excellent cold formabilityby adding Cu in 304

Used in requiring more form
ability than 304 grade

≤0.08

15~18

6~9

-

Cu 1.0~3.0

≥155

≥450 ≥40 ≤200
305EG

Non magnetism, Excellent
formability

Electron Gun

≤0.08

15~17

13~15

- -

≥175

≥480 ≥40 ≤200
321

Increase intergranular
corrosion resistance
by adding Ti

Heat exchanger

≤0.08

17~19

9~13

-

Ti≥ 5XC%

≥205

≥520 ≥40 ≤200
347

Increase intergranular
corrosion resistance by
adding Nb

Turbine components

≤0.08

17~19

9~13 -

Nb≥10XC%

≥205

≥520 ≥40 ≤200
310S

Excellent oxidation
resistance and
strength at high temp

Exhaust manifold Furnace
Heat exchanger

≤0.08

24~26

19~22

- -

≥205

≥520 ≥40 ≤200
XM15J1

Excellent oxidation
resistance by
adding Si

Exhaust system Of
utomobile(bellows)

≤0.08

15~20

11.5~15

-

Si 3.0~5.0

≥205

≥520 ≥40 ≤218
316

Excellent corrosion resistance, pittingresistance/ high strength at high temp.by adding Mo

Used in Chemical or seawater facilities

≤0.08

16~18 10~14

2~3

- ≥205 ≥520 ≥40 ≤200
316L

Low carbon /  excellent intergranular corrosion resistance compared to 316

≤0.03

16~18

12~15

2~3

- ≥175 ≥480 ≥40 ≤200
316Ti

excellent intergranular corrosion resistance by adding Ti   compared to 316

≤0.08

16~18

10~14

2~3

Ti≥ 5XC%

≥205 ≥520 ≥40 ≤200
316LN

Increase strength
by adding N in 316

≤0.03

16.5~18.5

10.5~14.5

2~3

N 0.12~0.22

≥245 ≥550 ≥40 ≤220
317L

excellent sea water resistance and Stress corrosion cracking resistance by adding more Mo compared to 316

≤0.03

18~22

11~15

3~4

- ≥175 ≥480 ≥40 ≤200
 

 

 

                 

 

Austenite

Grade Characteristic Appliance

Chemical composition

Mechanical properties

C Cr Ni Mo Others YP TS EL HV
329J3L

Excellent chlorine induced corrosion resistance, Stress corrosion cracking  resistance, pitting corrosion

Used in Chemical or seawater facilities

≤0.03 21~24

4.5~6.5

2.5~3.5

N 0.08~0.2 ≥450 ≥620 ≥18

≤320

329LD

Reduce Cr, Ni and Mn compared to 329J3L

Storage tank Industry facilities

≤0.03

19~22

2~4

1~2

Mn 2~4

≥450

≥620 ≥25

≤310

 

Ferrite

Grade Characteristic Appliance

Chemical composition

Mechanical properties

C Cr Mo Others YP TS EL HV
400H

High strength by adding more Cr,Si compared to 409L

LCD frame

≤0.03

12~14

-

Si≤1.3

≥175 ≥360 ≥22 ≤180
409L

Good weldability and formability  by adding Ti compared to 410

Exhaust system
of automobile

≤0.03

10.5~11.75

-

Ti 6XC%~0.75

≥175 ≥360 ≥25 ≤175
410L

Good formability  and  oxidation resistance at high temp. compared to 410

container

≤0.03

11~13.5

- - ≥195 ≥360 ≥22 ≤200
429EM

Heat resisting stainless steel By adding Ti, Nb, Si, Cu

Exhaust Manifold of automobile

≤0.02

13~15

-

Si≤1.5

≥205 ≥400 ≥25 ≤180
430

Representative ferrite grade Good formability and oxidation resistance

Home appliances Kitchen appliances

≤0.12 16~18 - - ≥205 ≥450 ≥22 ≤200
430LX

More good formability and oxidation resistance than 430  by adding Ti, Nb

Gas burner Washing machine

≤0.03 16~19 -

Ti/Nb 0.1~1.0

≥175 ≥360 ≥22 ≤200
430J1L

Increase corrosion resistance and formability  by adding Cu, Nb in 430

Washing machine, Exhaust system of automobile

≤0.25 16~20 -

N≤0.025

≥205 ≥390 ≥22 ≤200
430Ti

Excellent adhesive properties to glass By adding Si, Ti  in 20%Cr

Stud Pin

≤0.02

19.5~20.5

-

Ti 0.3~0.6

≥206 ≥422 ≥25 ≤180
436L

Increase corrosion resistance and formability  by adding Mo,Ti

Exhaust system of automobile

≤0.25

16~19

0.75~1.5

Ti,Nb,Zr

≥245 ≥410 ≥20 ≤230
439

Lower C, N compared to 430 and increase a formability by adding Ti

Exhaust system of automobile, Ornamental pipes

≤0.03 17~19 -

Ti 0.2~1.0

≥175 ≥400 ≥22 ≤175
441

Heat resisting stainless steel By adding Ti, Nb

Exhaust Manifold of automobile

≤0.03

17.5~18.5

-

Si≤1.0, Ti/Nb

≥250

430~630

≥25

≤175

444

Higher Cr and Mo content bring great intergranular corrosion resistance and  SCC resistance

Exhaust Manifold of automobile

≤0.025

17~20 1.75~2.5

Ti, Nb, Zr

≥245

≥410

≥20

≤230

445NF

Higher Cr content increase corrosion resistance and weldability

Elevator Ornamental pipes

≤0.015

20~23 -

Ti≤0.5, Si/Nb

≥245

≥410

≥22

≤200

446M

Superior in corrosion resistance to 445 stainless steel with higher Cr content

Roof and exterior building material

≤0.015

25~28.5 1.5~2.5

Ti,Nb≥8(C+N)

≥270

≥430

≥20

≤210

 

Martensite

Grade Characteristic Appliance

Chemical composition

Mechanical properties

C Cr Mo Others YP TS EL HV
410

Hardened through heat treatment(magnetism)

Knife blade Tableware cutlery
(spoon, fork)

≤0.15

11.5~13.5 - -

≥205

≥440

≥20

≤210

410B

Compared to 410,Quenching hardness is improved by controlling the quantity of Mn and Ni

Disk brake of motorcycle

≤0.15

11.5~13.5 - -

≥205

≥440

≥20

≤210

420J1

Large quenching hardness

Tableware cutlery (knife)

0.16~0.25

12~14 - -

≥225

≥520

≥18

≤234

420J2

Larger quenching hardness compared to 420J1

High strength valve

0.26~0.4

12~14

- -

≥225

≥540

≥18

≤247

420N1

Improved formability, corrosion resistance, Abrasion resistance compared to 420J1

Tableware cutlery (knife)

≤0.17

12~14

-

Ni ≤0.14

≥225

≥520

≥18

≤218