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A 193 B8M2 Class 2 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of A 193 B8M2 Class 2

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SAE A 193 B8M2 Class 2

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This page is mainly introduced the A 193 B8M2 Class 2 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of A 193 B8M2 Class 2,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Standard Specification for Alloy-Steel and Stainless Steel Bolting for High Temperature or High Pressure Service and Other Special Purpose Applications

Steel Garde:A 193 B8M2 Class 2
Type:Stainless Steels
Country:USA
Standard:SAE

Standard Number:

ITEM	Standard Number	Descriptions
1	A 193/A 193M (2012)	Standard Specification for Alloy-Steel and Stainless Steel Bolting for High Temperature or High Pressure Service and Other Special Purpose Applications

Metallographic Structure:Precipitation-Hardening
Application:Standard Specification for Alloy-Steel and Stainless Steel Bolting for High Temperature or High Pressure Service and Other Special Purpose Applications

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
A 193 B8M2 Class 2B	SAE	USA
B 388 TM22	SAE	USA
B 883 MIM-2200	SAE	USA
SA-193 Grade B8M2 Class 2B	AMS	USA

Chemical composition(mass fraction)(wt.%)

Elements	Min.（≥）	Max.（≤）	Similar	Remarks
C		0.13
Si
Mn
Ni
Cr		5.70
Al		6.30
Cu
Ti
Fe
Mo		2.00
Co
Ta		3.00
Zr		0.60
W		11.00

Mechanical Properties

Tensile strength	734～273	σb/MPa
Yield Strength	478	σ 0.2 ≥/MPa
Elongation	82	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	802～275	-
HRC	30	-

Physical Properties

Thermal expansion	36-70	e-6/K
Thermal conductivity	17-03	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	7764-1986	째C
Density	3500-6235	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 193 B8M2 Class 2 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