Chemical Composition Iron, Fe 68 Nickel, Ni 18.5 Cobalt, Co 7.5 Molybdenum, Mo 4.8 Titanium, Ti 0.4 Aluminum, Al 0.1 Silicon, Si ≤ 0.10 Manganese, Mn ≤ 0.10 Carbon, C ≤ 0.030 Phosphorous, P ≤ 0.010 Sulfur, S ≤ 0.010 Zirconium, Zr 0.01 Boron, B 0.003

Mechanical Properties Material Condition Ultimate Tensile (min) Yield Strength (Min) Elongation in 4D % (min) Hardness Mpa Ksi Mpa Ksi Alloy Maraging C250 After Maraging heat treatment 900°F 1758 255 1724 250 6 ≥ 48 HRC

Chemical Composition Iron, Fe 68 Nickel, Ni 18.5 Cobalt, Co 7.5 Molybdenum, Mo 4.8 Titanium, Ti 0.4 Aluminum, Al 0.1 Silicon, Si ≤ 0.10 Manganese, Mn ≤ 0.10 Carbon, C ≤ 0.030 Phosphorous, P ≤ 0.010 Sulfur, S ≤ 0.010 Zirconium, Zr 0.01 Boron, B 0.003

Mechanical Properties Material Condition Ultimate Tensile (min) Yield Strength (Min) Elongation in 4D % (min) Hardness Mpa Ksi Mpa Ksi Alloy Maraging C250 After Maraging heat treatment 900°F 1758 255 1724 250 6 ≥ 48 HRC

Maraging 250/UNS K92890

Grade: Maraging 250/UNS K92890

Sheet/Plate: 0.3mm-150mm

Strip/Foil: 0.02mm-16mm

Pipe: 6mm*0.5mm-1200mm*100mm

Bar: Ф6mm – Ф600mm

Wire: Ф0.01mm – Ф6mm

Others: Forged Rings, Flanges, Elbows, Tees, Reducers etc.

Standard: ASTM/ASME/AMS

Alloy 250/UNS K92890 / Maraging 250/UNS K92940
Alloy 250 (UNS K92890 / Maraging 250) is an age-hardenable iron-nickel steel. Alloy 250 combines ultra-high strength (1800MPa), good toughness, readily machinable in pre-aged condition, excellent transverse properties and resistance to crack propagation.
Maraging 250 (also referred to as Maraging C250 and Vascomax 250) is a vacuum induction melted and vacuum arc melted, low-carbon, nickel-cobalt-molybdenum high temperature alloy. This maraging steel can attain yield strengths in excess of 240 ksi (1655 MPa) through a simple, low temperature heat treatment. Maraging 250 exhibits good ductility at high strength levels and is readily welded.

Chemical Composition

Iron, Fe	68
Nickel, Ni	18.5
Cobalt, Co	7.5
Molybdenum, Mo	4.8
Titanium, Ti	0.4
Aluminum, Al	0.1
Silicon, Si	≤ 0.10
Manganese, Mn	≤ 0.10
Carbon, C	≤ 0.030
Phosphorous, P	≤ 0.010
Sulfur, S	≤ 0.010
Zirconium, Zr	0.01
Boron, B	0.003

Mechanical Properties

Material	Condition	Ultimate Tensile (min)		Yield Strength (Min)		Elongation in 4D % (min)	Hardness
		Mpa	Ksi	Mpa	Ksi
Alloy Maraging C250	After Maraging heat treatment 900°F	1758	255	1724	250	6	≥ 48 HRC

Maraging 250 (Vascomax 250) Applications

▪ Missile & rocket motor cases
▪ Munitions
▪ Landing gear components
▪ Aerospace
▪ Extrusion tooling
▪ Die casting
▪ High performance shafting, gears & fasteners

Introduction

Specification

Chemical Composition

Iron, Fe	68
Nickel, Ni	18.5
Cobalt, Co	7.5
Molybdenum, Mo	4.8
Titanium, Ti	0.4
Aluminum, Al	0.1
Silicon, Si	≤ 0.10
Manganese, Mn	≤ 0.10
Carbon, C	≤ 0.030
Phosphorous, P	≤ 0.010
Sulfur, S	≤ 0.010
Zirconium, Zr	0.01
Boron, B	0.003

Mechanical

Mechanical Properties

Material	Condition	Ultimate Tensile (min)		Yield Strength (Min)		Elongation in 4D % (min)	Hardness
		Mpa	Ksi	Mpa	Ksi
Alloy Maraging C250	After Maraging heat treatment 900°F	1758	255	1724	250	6	≥ 48 HRC

Application

Maraging 250 (Vascomax 250) Applications

▪ Missile & rocket motor cases
▪ Munitions
▪ Landing gear components
▪ Aerospace
▪ Extrusion tooling
▪ Die casting
▪ High performance shafting, gears & fasteners

Packaging & Delivery