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STS431FB chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of STS431FB

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KS STS431FB

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This page is mainly introduced the STS431FB chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of STS431FB,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Stainless steel blooms and billets for forgings

Steel Garde:STS431FB
Type:Stainless Steels
Country:Korea
Standard:KS
Standard Number:

ITEM Standard Number Descriptions

1 D 3691 (2001) Stainless steel blooms and billets for forgings
Metallographic Structure:Martensite
Application:Stainless steel blooms and billets for forgings

ITEM	Standard Number	Descriptions
1	D 3691 (2001)	Stainless steel blooms and billets for forgings

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
STS431	KS	Korea

Chemical composition(mass fraction)(wt.%)

Elements	Min.（≥）	Max.（≤）
C		0.20
Si		1.00
Mn		1.00
P		0.040
S		0.030
Cr	15.00	17.00
Ni	1.25	2.50
Mo
N

Mechanical Properties

Tensile strength	525～749	σb/MPa
Yield Strength	870	σ 0.2 ≥/MPa
Elongation	49	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	756～150	-
HRC	30	-

Physical Properties

Thermal expansion	79-32	e-6/K
Thermal conductivity	35-25	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	0949-0061	째C
Density	4318-7334	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)
STS431FB 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