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STS630 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of STS630

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KS STS630

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This page is mainly introduced the STS630 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of STS630,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Stainless steel bars

Steel Garde:STS630
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
3	D 3706 (2008)	Stainless steel bars

Metallographic Structure:Precipitation-Hardening
Application:Stainless steel bars

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
STS630FB	KS	Korea

Chemical composition(mass fraction)(wt.%)

Elements	Min.（≥）	Max.（≤）
C		0.07
Si		1.00
Mn		1.00
P		0.040
S		0.030
Cr	15.00	17.00
Ni	3.00	5.00
Mo
N
Cu	3.00	5.00
Nb	0.15	0.45

Mechanical Properties

Tensile strength	245～528	σb/MPa
Yield Strength	178	σ 0.2 ≥/MPa
Elongation	48	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	387～272	-
HRC	30	-

Physical Properties

Thermal expansion	41-45	e-6/K
Thermal conductivity	94-53	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	1886-6308	째C
Density	1763-9657	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)
STS630 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