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S44020 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of S44020

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AISI S44020

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This page is mainly introduced the S44020 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of S44020,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.

Martensitic Chromium Free Machining Stainless Steel

Steel Garde:S44020
Type:Stainless Steels
Country:USA
Standard:AISI
Standard Number:

ITEM Standard Number Descriptions

1 A 582/A 582M (2012) Martensitic Chromium Free Machining Stainless Steel
Metallographic Structure:Martensite
Application:Martensitic Chromium Free Machining Stainless Steel

ITEM	Standard Number	Descriptions
1	A 582/A 582M (2012)	Martensitic Chromium Free Machining Stainless Steel

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
A 582 S44020	SAE	USA
A 582 S44023	SAE	USA
S44023	AISI	USA
A 582 S44020	SAE	USA
S44020	AISI	USA
A 582 S44023	SAE	USA
S44023	AISI	USA
SUS 440F	JIS	Japan
STS440F	KS	Korea
440F	CNS	China
AISI440F	AISI	USA
AISI440F Se	AISI	USA
S44020	UNS	USA

Chemical composition(mass fraction)(wt.%)

Elements	Min.（≥）	Max.（≤）
C	0.95	1.20
Mn		1.25
Si		1.00
P		0.04
S	0.10	0.35
Cr	16.00	18.00
Ni		0.75
Mo	0.40	0.60
N		0.08

Mechanical Properties

Tensile strength	761～007	σb/MPa
Yield Strength	531	σ 0.2 ≥/MPa
Elongation	65	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	488～930	-
HRC	30	-

Physical Properties

Thermal expansion	39-77	e-6/K
Thermal conductivity	17-61	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	2431-9069	째C
Density	6634-1030	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)
S44020 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