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A 541 Class 8 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of A 541 Class 8

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SAE A 541 Class 8

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This page is mainly introduced the A 541 Class 8 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of A 541 Class 8,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Quenched and Tempered Carbon and Alloy Steel Forgings for Pressure Vessel Components

Steel Garde:A 541 Class 8
Type:Stainless Steels
Country:USA
Standard:SAE
Standard Number:

ITEM Standard Number Descriptions

1 A 541/A 541M (2010) Quenched and Tempered Carbon and Alloy Steel Forgings for Pressure Vessel Components
Metallographic Structure:Precipitation-Hardening
Application:Quenched and Tempered Carbon and Alloy Steel Forgings for Pressure Vessel Components

ITEM	Standard Number	Descriptions
1	A 541/A 541M (2010)	Quenched and Tempered Carbon and Alloy Steel Forgings for Pressure Vessel Components

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
A 565 S41800	SAE	USA
S41800	AISI	USA
A 565 S41800	SAE	USA
S41800	AISI	USA
A 565 S41800	SAE	USA
S41800	AISI	USA
1.4418	AMS	USA
A 534 18CrNiMo7-6	SAE	USA
A 534 18NiCrMo14-6	SAE	USA
A 541 Class 8A	SAE	USA
A 854 Grade 180	SAE	USA
A 920 Grade 11V41 Class 80	SAE	USA
A 920 Grade 15V41 Class 80	SAE	USA
B418 Type 1	SAE	USA
B418 Type 2	SAE	USA
C14180	AISI	USA
C14181	AISI	USA
K14185	AISI	USA
N 62418	ASME	USA
S41880	AISI	USA
SA-541 Class 8	AMS	USA
SA-541 Class 8A	AMS	USA
W21418	AISI	USA
W50418	AISI	USA
X4CrNiMo16-5-1	B.S.	UK
1.4418	B.S.	UK
X4CrNiMo16-5-1	AFNOR	France
1.4418	AFNOR	France

Chemical composition(mass fraction)(wt.%)

Elements	Min.（≥）	Max.（≤）	Similar	Remarks
C		0.20
Si		0.50
Mn		1.00
P
S
Ni
Cr		12.50
Al
Cu
Ti
Fe		remaining
N
Mo
W		3.00

Mechanical Properties

Tensile strength	598～693	σb/MPa
Yield Strength	449	σ 0.2 ≥/MPa
Elongation	48	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	637～464	-
HRC	30	-

Physical Properties

Thermal expansion	55-38	e-6/K
Thermal conductivity	31-58	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	7378-6307	째C
Density	4411-6529	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)
A 541 Class 8 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