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

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CNS 440C

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

Steel Garde:440C
Type:Stainless Steels
Country:China
Standard:CNS

Standard Number:

ITEM	Standard Number	Descriptions
1	G3067	Stainless steel bars
2	G3076	Stainless steel wires
3	G3077	Stainless steel wire rods

Metallographic Structure:Martensite
Application:Stainless steel wire rods

Relevant products:

X105CrMo17 Extruded Pipe

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
A 276 S44004	SAE	USA
A 314 S44004	SAE	USA
A 473 S44004	SAE	USA
A 493 S44004	SAE	USA
A 580 S44004	SAE	USA
S44004	AISI	USA
SUS 440C	JIS	Japan
SUS 440C	JIS	Japan
SUS 440C	JIS	Japan
SUS 440C	JIS	Japan
STS440C	KS	Korea
AISI440C	AISI	USA
ASTM440C	ASTM	USA

Chemical composition(mass fraction)(wt.%)

Elements	Min.（≥）	Max.（≤）
C	0.95	1.20
Si		1.00
Mn		1.00
P		0.040
S		0.030
Ni		0.60
Cr	16.00	18.00
Mo		0.75

Mechanical Properties

Tensile strength	168～433	σb/MPa
Yield Strength	739	σ 0.2 ≥/MPa
Elongation	73	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	952～992	-
HRC	30	-

Physical Properties

Thermal expansion	71-71	e-6/K
Thermal conductivity	50-17	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	3854-5753	째C
Density	3506-5738	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)
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