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

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CNS 440B

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

Steel Garde:440B
Type:Stainless Steels
Country:China
Standard:CNS
Standard Number:

ITEM Standard Number Descriptions

1 G3067 Stainless steel bars
Metallographic Structure:Martensite
Application:Stainless steel bars

ITEM	Standard Number	Descriptions
1	G3067	Stainless steel bars

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
A 276 S44003	SAE	USA
A 314 S44003	SAE	USA
A 473 S44003	SAE	USA
A 580 S44003	SAE	USA
S44003	AISI	USA
SUS 440B	JIS	Japan
STS440B	KS	Korea
ASTM440B	ASTM	USA
AISI440B	AISI	USA

Chemical composition(mass fraction)(wt.%)

Elements	Min.（≥）	Max.（≤）
C	0.75	0.95
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	678～655	σb/MPa
Yield Strength	297	σ 0.2 ≥/MPa
Elongation	89	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	653～558	-
HRC	30	-

Physical Properties

Thermal expansion	00-75	e-6/K
Thermal conductivity	02-14	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	3663-2647	째C
Density	5645-7575	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)
440B 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