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

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UNS Marage 250

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This page is mainly introduced the Marage 250 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of Marage 250,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Steel, Maraging, Sheet, Strip, and Plate 18Ni - 7.8Co - 4.9Mo - 0.40Ti - 0.10AI Consumable Electrode Melted, Solution Heat Treated

Steel Garde:Marage 250
Type:Stainless Steels
Country:USA
Standard:UNS

Standard Number:

ITEM	Standard Number	Descriptions
1	SAE AMS 6520D (1995)	Steel, Maraging, Sheet, Strip, and Plate 18Ni - 7.8Co - 4.9Mo - 0.40Ti - 0.10AI Consumable Electrode Melted, Solution Heat Treated

Metallographic Structure:Precipitation-Hardening
Application:Steel, Maraging, Sheet, Strip, and Plate 18Ni - 7.8Co - 4.9Mo - 0.40Ti - 0.10AI Consumable Electrode Melted, Solution Heat Treated

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
A 646 Grade Marage 250	SAE	USA
Marage 250	ASTM	USA
Marage 250	ASTM	USA
Marage 250	ASTM	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	577～370	σb/MPa
Yield Strength	847	σ 0.2 ≥/MPa
Elongation	45	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	381～705	-
HRC	30	-

Physical Properties

Thermal expansion	21-27	e-6/K
Thermal conductivity	33-25	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	1319-5405	째C
Density	6689-5038	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)
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