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STS444 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of STS444

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KS STS444

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This page is mainly introduced the STS444 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of STS444,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Hot rolled stainless steel plates, sheets and strip

Steel Garde:STS444
Type:Stainless Steels
Country:Korea
Standard:KS

Standard Number:

ITEM	Standard Number	Descriptions
1	D 3698 (2008)	Cold rolled stainless steel plates, sheets and strip
2	D 3705 (2008)	Hot rolled stainless steel plates, sheets and strip

Metallographic Structure:Ferrite
Application:Hot rolled stainless steel plates, sheets and strip

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
STS444TB	KS	Korea
STS444TP	KS	Korea

Chemical composition(mass fraction)(wt.%)

Elements	Min.（≥）	Max.（≤）
C		0.025
Si		1.00
Mn		1.00
P		0.040
S		0.030
Cr	17.00	20.00
Ni		0.60
Mo	1.75	2.50
N		0.025
Ti,Nb,Zr	8×(C％+N％)	0.80

Mechanical Properties

Tensile strength	740～743	σb/MPa
Yield Strength	726	σ 0.2 ≥/MPa
Elongation	26	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	776～943	-
HRC	30	-

Physical Properties

Thermal expansion	86-53	e-6/K
Thermal conductivity	82-62	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	8646-1366	째C
Density	4570-3672	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)
STS444 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