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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	671～714	σb/MPa
Yield Strength	423	σ 0.2 ≥/MPa
Elongation	80	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	631～681	-
HRC	30	-

Physical Properties

Thermal expansion	49-83	e-6/K
Thermal conductivity	44-40	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	0752-3161	째C
Density	3919-1923	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