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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.
Stainless steel wires

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

ITEM Standard Number Descriptions

1 G 4309 (1999) Stainless steel wires
Metallographic Structure:Martensite
Application:Stainless steel wires

ITEM	Standard Number	Descriptions
1	G 4309 (1999)	Stainless steel wires

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	678～892	σb/MPa
Yield Strength	346	σ 0.2 ≥/MPa
Elongation	25	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	173～604	-
HRC	30	-

Physical Properties

Thermal expansion	59-04	e-6/K
Thermal conductivity	31-40	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	6779-6459	째C
Density	7326-8267	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