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A 646 Grade Marage 250 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of A 646 Grade Marage 250

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SAE A 646 Grade Marage 250

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A 646 Grade Marage 250 Profile
A 646 Grade Marage 250 Chemical composition
A 646 Grade Marage 250 Mechanical Properties
A 646 Grade Marage 250 Physical Properties
A 646 Grade Marage 250 Heat treatment
A 646 Grade Marage 250 Size Availability
A 646 Grade Marage 250 Relevant products

Profile

This page is mainly introduced the A 646 Grade Marage 250 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of A 646 Grade Marage 250,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Premium Quality Alloy Steel Blooms and Billets for Aircraft and Aerospace Forgings

Steel Garde:A 646 Grade Marage 250
Type:Stainless Steels
Country:USA
Standard:SAE
Standard Number:

ITEM Standard Number Descriptions

1 A 646/A 646M (2011) Premium Quality Alloy Steel Blooms and Billets for Aircraft and Aerospace Forgings
Metallographic Structure:Precipitation-Hardening
Application:Premium Quality Alloy Steel Blooms and Billets for Aircraft and Aerospace Forgings

ITEM	Standard Number	Descriptions
1	A 646/A 646M (2011)	Premium Quality Alloy Steel Blooms and Billets for Aircraft and Aerospace Forgings

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
Marage 250	ASTM	USA
Marage 250	ASTM	USA
Marage 250	ASTM	USA
Marage 250	UNS	USA
Marage 250	UNS	USA
Marage 250	UNS	USA
Marage 300	ASTM	USA
Marage 300	ASTM	USA
Marage 300	UNS	USA
Marage 300	UNS	USA
Marage 300	UNS	USA

Chemical composition(mass fraction)(wt.%)

Elements	Min.（≥）	Max.（≤）	Similar	Remarks
C		0.03
Si		0.10
Mn		0.10
Ni		18.00
Cr
Al		0.10
Cu
Ti		0.40
Fe
Mo		5.00
Co		8.00

Mechanical Properties

Tensile strength	209～760	σb/MPa
Yield Strength	008	σ 0.2 ≥/MPa
Elongation	94	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	983～812	-
HRC	30	-

Physical Properties

Thermal expansion	85-71	e-6/K
Thermal conductivity	71-72	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	4943-0215	째C
Density	3172-9790	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 646 Grade Marage 250 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