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STS347TF chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of STS347TF

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This page is mainly introduced the STS347TF chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of STS347TF,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Steel tubes for fired heater

Steel Garde:STS347TF
Type:Stainless Steels
Country:Korea
Standard:KS
Standard Number:

ITEM Standard Number Descriptions

1 D 3587 (1991) Steel tubes for fired heater
Metallographic Structure:Austenite
Application:Steel tubes for fired heater

ITEM	Standard Number	Descriptions
1	D 3587 (1991)	Steel tubes for fired heater

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
STS347	KS	Korea
STS347TKA	KS	Korea
STS347HTB	KS	Korea
STS347HTF	KS	Korea
STS347TB	KS	Korea
STS347TPY	KS	Korea
STS347FB	KS	Korea
STS347HFB	KS	Korea
STS347HTP	KS	Korea
STS347TP	KS	Korea

Chemical composition(mass fraction)(wt.%)

Elements	Min.（≥）	Max.（≤）
C		0.08
Si		1.00
Mn		2.00
P		0.045
S		0.030
Cr	17.00	19.00
Ni	9.00	13.00
Mo
N
Nb	10×C％

Mechanical Properties

Tensile strength	424～323	σb/MPa
Yield Strength	814	σ 0.2 ≥/MPa
Elongation	85	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	238～614	-
HRC	30	-

Physical Properties

Thermal expansion	25-33	e-6/K
Thermal conductivity	88-64	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	8147-6889	째C
Density	8985-1483	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)
STS347TF 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