|
Constit
ution
|
Type of steel size
|
|
Characteristice
|
Applications
|
|
Austenite
|
304
|
KS,
JIS,
AISI, ASTM
|
- Excellent in corrosion resistance, heat
- resistane, and processibility
- More widely used than any other
- stainless steels
- Not hardened after heat treatment
|
- General home
- appliances, sink
- Chemical industry,
- building materials
- Food system, dairy
- farming system, auto
- parts
|
|
304L
|
KS,
JIS,
AISI, ASTM
|
- Good critical corrosion resistance due
- to decrease in carbon
- Suitable for the area where heat
- treatment cannot be applied after
- welding
- 316 to the 304
|
- Oil refining industry
- Chemical industry
- Nuclear-grade material
|
|
316
|
KS,
JIS,
AISI, ASTM
|
- Improvement in acid resistance due to
- added Mo (2~3%)
|
- Marine structure
- Food manufacturing
- system
- Photo developing
- device
|
|
316L
|
KS,
JIS,
AISI, ASTM
|
- Good critical orrosion resistance due
- to decrease in carbon
- Suitale for the area where heat
- treatment carbon
- Similar to the 316
|
- imilar to the 316
|
|
301
|
KS,
JIS,
AISI, ASTM
|
- Excelent in work hardening
- High tensile
|
- Spring
- Shaft
- Watch spring, tapeline
|
|
301L
|
KS,
JIS,
AISI, ASTM
|
- Good critical corrosion resistance
|
- For rail vehicle
- Spring
|
|
305
|
KS,
JIS,
AISI, ASTM
|
- Less work hardened than the 304
- Non-magnetic after cold working
|
- Guide Roller
- Non-magnetic
- electronic parts
- Spring-processed
- material
- Guide Roller
|
|
|
|
Ferrite
|
430
|
KS,
JIS,
AISI, ASTM
|
- Typical Cr-type stainless steel
- Low thermal expansion coefficient and
- good formability and oxidation
- resistance
|
- Hollowware
- Upper frame of
- microwave oven
- Electronic home
- appliances
- Hollowware
|
|
409L
|
KS,
JIS,
AISI, ASTM
|
- Improved corrosion resistance by
- adding Ti to Cr steel
|
- Parts for exhaust gas
- treatment
|
|
436L
|
KS,
JIS,
AISI, ASTM
|
- With less C, N and high Ti, Nb or Zr on
- 434, steel that improved processability
- and weldability atmosphere
|
- Building materials,
- auto parts
- Parts for exhaust
- gas treatment
- Kitchen utensils,
- heating & water
- system
|
|
|
|
Martensite
|
410
|
KS,
JIS,
AISI, ASTM
|
- 13Cr stainless steel
- Advantageous due to low price
- Good processibility, hardened by heat
- treatment
- Difficult to bear up against the severe
- corrosion atmosphere
|
- Knife, turbine blade
|
|
402J1
|
KS,
JIS,
AISI, ASTM
|
- High hardness in quenching and good
- corrosion
|
- Knife, turbine blade
|
|
420J2
|
Ks,
JIS
|
- Higher hardness after quenching in
- comparison with the 420J1
- Magnetic
|
- For high hardness
- materials such as
- scissors and
- mechanical parts
|
|
420
|
AISI
|
|
|
|
