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STS303Se chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of STS303Se

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KS STS303Se

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This page is mainly introduced the STS303Se chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of STS303Se,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Free - machining stainless steel wire and wire rods

Steel Garde:STS303Se
Type:Stainless Steels
Country:Korea
Standard:KS

Standard Number:

ITEM	Standard Number	Descriptions
1	D 3692 (2001)	Cold finished stainless steel bars
2	D 3702 (2008)	Stainless steel wire rods
3	D 3703 (2007)	Stainless steel wires
4	D 3706 (2008)	Stainless steel bars
5	D 7202 (2004)	Free - machining stainless steel wire and wire rods

Metallographic Structure:Austenite
Application:Free - machining stainless steel wire and wire rods

Chemical composition(mass fraction)(wt.%)

Elements	Min.（≥）	Max.（≤）
C		0.15
Si		1.00
Mn		2.00
P		0.20
S		0.06
Cr	17.00	19.00
Ni	8.00	10.00
Mo
N
Se		0.15

Mechanical Properties

Tensile strength	262～363	σb/MPa
Yield Strength	300	σ 0.2 ≥/MPa
Elongation	73	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	380～450	-
HRC	30	-

Physical Properties

Thermal expansion	66-26	e-6/K
Thermal conductivity	31-65	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	3392-9702	째C
Density	8426-8885	kg/m³
Resistivity	0.50-0.60	Ohm.mm²/m

Heat Treatment Regime

Annealing	Quenching	Tempering	Normalizing	Q & T
√	√	√	√	√

Size Availability

Steel Grade	Specification	Processing range(mm)
STS303Se Stainless Steels	Round Bar and Hollow Bar	Φ1 to Φ2000
	Square and Flat Steel	Φ10 to Φ100
	Plate and Sheet	0.08-800(Thickness)10-1500(Width)Length
	Tube or Pipe	OD:Φ4-410; WT:1-35 mm; Lenght:10-12000
	Coil and Strip Steel	THK:0.1mm Width:1500mm
	Forged	Ring/Cylindrical/Disk