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STSF347 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of STSF347

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KS STSF347

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This page is mainly introduced the STSF347 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of STSF347,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Stainless steel forgings for pressure vessels

Steel Garde:STSF347
Type:Stainless Steels
Country:Korea
Standard:KS
Standard Number:

ITEM Standard Number Descriptions

1 D 4115 (2001) Stainless steel forgings for pressure vessels
Metallographic Structure:Austenite
Application:Stainless steel forgings for pressure vessels

ITEM	Standard Number	Descriptions
1	D 4115 (2001)	Stainless steel forgings for pressure vessels

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
STSF347H	KS	Korea

Chemical composition(mass fraction)(wt.%)

Elements	Min.（≥）	Max.（≤）
C		0.08
Si		1.00
Mn		2.00
P		0.040
S		0.030
Cr	17.00	19.00
Ni	9.00	13.00
Mo
Nb		10×C％

Mechanical Properties

Tensile strength	451～560	σb/MPa
Yield Strength	524	σ 0.2 ≥/MPa
Elongation	70	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	466～145	-
HRC	30	-

Physical Properties

Thermal expansion	50-96	e-6/K
Thermal conductivity	83-74	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	9038-7913	째C
Density	6684-4723	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)
STSF347 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