Stainless Steel and Heatproof Steel Character and Usage

Grade

Approx Components

Properties and Use

SUS 304

18Cr-8Ni

Stainless steel and heatproof steel are the most popular steel categories for food container,
general chemical equipment and atomic equipment.

SUS 304L

18Cr-9Ni

304 is an extremely low carbon steel featured of resistance to grain boundary corrosion, for
the parts free of heat treatment after welding.

SUS 310S

25Cr-20Ni-0.06C

Resistance to repeating heating below 1035℃ and oxidization resistance superior than
309S, applicable to materials for heating furnace as well as purification devise for auto
exhaust and so forth.

SUS 316

18Cr-12Ni-2.5Mo-0.06C

High temp. creep, high rupture strength, suitable for parts for heat exchange device, high-temperature-corrosion-resistant bolt and so on.

SUS 317

18Cr-12Ni-3.5Mo-0.06C

High temp. creep, high rupture strength, suitable for parts for heat exchange device. 

SUS 321

18Cr-9Ni-Ti-0.06C

Applicable to the parts under the 400℃~900℃ corrosion condition and high temp. soldering material.

SUS 409

11Cr-Ti-0.06C

Suitable for purification devise for auto exhaust and muffler

SUS 410

13Cr

Good corrosion resistance and mechanical process capability, suitable for general usage and knife product.

SUS 420J1

13Cr-0.2C

Quench status with high hardness, corrosion resistance stronger than 13Cr, suitable for turbo blade

SUS 420J2S

13Cr-0.3C

Harder than 420J2 after quench, suitable for knife, nozzle, valve base, valve, ruler and so forth.