Chemical Composition Weight% C Si Mn S P Co Ni Mo Ti Al Fe Maraging 300 0.03 max 0.10 max 0.10 max 0.010 max 0.010 max 8.0-9.5 18.0-19.0 4.6-5.2 0.55-0.80 0.05-0.15 Bal

Mechanical Properties Material 0.2 % Yield Strength ksi Ultimate Tensile Strength ksi Elongation in 4D(%) Reduction of Area % Hardness HRC Maraging 300, Solution Annealed 1500° F (816°C), 1hr, AC 120 150 16 70 30 Solution Annealed Plus Aged 900 ° F (482°C), 3 hrs AC 280 290 8 40 52

Chemical Composition Weight% C Si Mn S P Co Ni Mo Ti Al Fe Maraging 300 0.03 max 0.10 max 0.10 max 0.010 max 0.010 max 8.0-9.5 18.0-19.0 4.6-5.2 0.55-0.80 0.05-0.15 Bal

Mechanical Properties Material 0.2 % Yield Strength ksi Ultimate Tensile Strength ksi Elongation in 4D(%) Reduction of Area % Hardness HRC Maraging 300, Solution Annealed 1500° F (816°C), 1hr, AC 120 150 16 70 30 Solution Annealed Plus Aged 900 ° F (482°C), 3 hrs AC 280 290 8 40 52

Maraging 300/UNS K93120

Grade: Maraging 300/UNS K93120

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

Maraging 300/Udimar 300/Maraging C300/UNS K93120/UNS K93160
Maraging 300 alloy steels material (also referred to as Maraging C300 and Vascomax C300) is a vacuum induction melted and vacuum arc re-melted, low-carbon, nickel-cobalt-molybdenum high-temperature nickel alloy. This material can produce yield strengths in excess of 270 ksi (1862 MPa) through simple, low-temperature heat treatment at 900°F (482°C). Maraging steel 300 also exhibits good ductility at high strength levels, displays excellent notch ductility and outstanding weldability.
Maraging 300 is an age hardenable (maraging) iron nickel stainless steel. Maraging 300 has exceptional strength, toughness and is resistant to crack propagation. Maraging 300 is used for tooling, transmission shafts, autosport components and light aircraft landing gear.

Chemical Composition

Weight%	C	Si	Mn	S	P	Co	Ni	Mo	Ti	Al	Fe
Maraging 300	0.03 max	0.10 max	0.10 max	0.010 max	0.010 max	8.0-9.5	18.0-19.0	4.6-5.2	0.55-0.80	0.05-0.15	Bal

Mechanical Properties

Material	0.2 % Yield Strength ksi	Ultimate Tensile Strength ksi	Elongation in 4D(%)	Reduction of Area %	Hardness HRC
Maraging 300, Solution Annealed 1500° F (816°C), 1hr, AC	120	150	16	70	30
Solution Annealed Plus Aged 900 ° F (482°C), 3 hrs AC	280	290	8	40	52

Applications

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

Introduction

Specification

Chemical Composition

Weight%	C	Si	Mn	S	P	Co	Ni	Mo	Ti	Al	Fe
Maraging 300	0.03 max	0.10 max	0.10 max	0.010 max	0.010 max	8.0-9.5	18.0-19.0	4.6-5.2	0.55-0.80	0.05-0.15	Bal

Mechanical

Mechanical Properties

Material	0.2 % Yield Strength ksi	Ultimate Tensile Strength ksi	Elongation in 4D(%)	Reduction of Area %	Hardness HRC
Maraging 300, Solution Annealed 1500° F (816°C), 1hr, AC	120	150	16	70	30
Solution Annealed Plus Aged 900 ° F (482°C), 3 hrs AC	280	290	8	40	52

Application

Applications

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

Packaging & Delivery