| Characteristics by Stainless Steel Type
Ferritic Stainless Steels
| Characteristics and Applications of Ferritic
- STS 430
Characteristics: It is a representative steel type of ferrite stainless steel and is most widely used for general corrosion resistance. It has good Drawing, flexion, and cold working, has little hardening by machining, and has excellent weldability.Application: Household goods such as kitchen & tableware, automobile components, chemical industries, heat exchangers, electric equipment
- STS 434
Characteristics: It is a type of steel that improves corrosion resistance by adding Mo to 430 and shows better corrosion resistance than 430 for nitric acid, phosphoric acid, acetic acid, etc.Application: Automotive parts, seawater tank, Fastener
| Chemical composition
Stainless steel types | Chemical composition (%) | C | Si | Mn | P | S | Ni | Cr | Mo | and others | Austenitic | STS 304 | below 0.08 | below 1.00 | below 2.00 | below 0.045 | below 0.030 | 8.00 ~10.50 | 18.00 ~20.00 | | | STS 304L | below 0.030 | below 1.00 | below 2.00 | below 0.045 | below 0.030 | 9.00 ~13.00 | 18.00 ~20.00 | | | STS 309S | below 0.08 | below 1.0 | below 2.00 | below 0.045 | below 0.030 | 12.00 ~15.00 | 22.00 ~24.00 | | | STS 310S | below 0.08 | below 1.50 | below 2.00 | below 0.045 | below 0.030 | 19.00 ~22.00 | 24.00 ~26.00 | | | STS 316 | below 0.08 | below 1.00 | below 2.00 | below 0.045 | below 0.030 | 10.00 ~14.00 | 16.00 ~18.00 | 2.00 ~3.00 | | STS 316L | below 0.030 | below 1.00 | below 2.00 | below 0.045 | below 0.030 | 12.00 ~15.00 | 16.00 ~18.00 | 2.00 ~3.00 | | STS 321 | below 0.08 | below 1.00 | below 2.00 | below 0.045 | below 0.030 | 9.00 ~13.00 | 17.00 ~19.00 | | above Ti5×C% | STS 347 | below 0.08 | below 1.00 | below 2.00 | below 0.045 | below 0.030 | 9.00 ~13.00 | 17.00 ~19.00 | | above Nb10×C% | Ferritic | STS 430 | below 0.12 | below 0.75 | below 1.00 | below 0.040 | below 0.030 | | 16.00 ~18.00 | | | STS 434 | below 0.12 | below 1.00 | below 1.00 | below 0.040 | below 0.030 | | 16.00 ~18.00 | 0.75 ~1.25 | | Martensitic | STS 403 | below 0.15 | below 0.50 | below 1.00 | below 0.040 | below 0.030 | | 11.50 ~13.50 | | | STS 410 | below 0.15 | below 1.00 | below 1.00 | below 0.040 | below 0.030 | | 11.50 ~13.50 | | | STS 410S | below 0.08 | below 1.00 | below 1.00 | below 0.040 | below 0.030 | | 11.50 ~13.50 | | |
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| Mechanical property
Stainless steel types | Yield strength N/㎟ | Tensile strength N/㎟ | Elongation percentage % | Hardness | HB | HRB | HV | Austenite | STS 304 | 205 | 520 | 40 | 187 | 90 | 200 | STS 304L | 175 | 480 | 40 | 187 | 90 | 200 | STS 309S | above 205 | above 520 | above 40 | below 187 | below 90 | below 200 | STS 310S | above 205 | above 520 | above 40 | below 187 | below 90 | below 200 | STS 316 | above 205 | above 520 | above 40 | below 187 | below 90 | below 200 | STS 316L | above 175 | above 480 | above 40 | below 187 | below 90 | below 200 | STS 321 | above 205 | above 520 | above 40 | below 187 | below 90 | below 200 | STS 347 | above 205 | above 520 | above 40 | below 187 | below 90 | below 200 | Ferritic | STS 430 | above 205 | above 450 | above 22 | below 183 | below 88 | below 200 | STS 434 | above 205 | above 450 | above 22 | below 183 | below 88 | below 200 | Martensitic | STS 403 | above 205 | above 440 | above 20 | below 201 | below 93 | below 210 | STS 410 | above 205 | above 440 | above 20 | below 201 | below 93 | below 210 | STS 410S | above 205 | above 410 | above 20 | below 183 | below 88 | below 200 |
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