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SUS 440C chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of SUS 440C

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JIS SUS 440C

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This page is mainly introduced the SUS 440C chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of SUS 440C,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Cold finished stainless steel bars

Steel Garde:SUS 440C
Type:Stainless Steels
Country:Japan
Standard:JIS
Standard Number:

ITEM Standard Number Descriptions

1 G 4318 (2007) Cold finished stainless steel bars
Metallographic Structure:Martensite
Application:Cold finished stainless steel bars

ITEM	Standard Number	Descriptions
1	G 4318 (2007)	Cold finished stainless steel bars

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
SUS 440C	JIS	Japan
SUS 440C	JIS	Japan
SUS 440C	JIS	Japan

Chemical composition(mass fraction)(wt.%)

Elements	Min.（≥）	Max.（≤）
C	0.95	1.20
Si		1.00
Mn		1.00
P		0.04
S		0.03
Cr	16.00	18.00
Ni		0.60
Mo		0.75
N

Mechanical Properties

Tensile strength	898～796	σb/MPa
Yield Strength	404	σ 0.2 ≥/MPa
Elongation	58	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	388～944	-
HRC	30	-

Physical Properties

Thermal expansion	35-64	e-6/K
Thermal conductivity	31-20	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	2628-2925	째C
Density	3706-6570	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)
SUS 440C 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