Ferritic Stainless Steel – Samwon

| 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 (%)
Stainless steel types		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
Ferritic	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

| Mechanical property

Stainless steel types		Yield strength N/㎟	Tensile strength N/㎟	Elongation percentage %	Hardness
Stainless steel types		Yield strength N/㎟	Tensile strength N/㎟	Elongation percentage %	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
Ferritic	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