Supreme Steels

Maraging 250

Maraging 250 - High Strength, Low Carbon Steel Alloy

Maraging 250 is a high-strength, low-carbon steel alloy that is known for its exceptional mechanical properties, particularly its high tensile strength and toughness. The alloy is called “maraging” because it undergoes a special aging process (called maraging) to achieve superior hardness and strength. Maraging 250 is specifically designed for applications requiring high performance, such as in aerospace, tooling, and structural components. This alloy is famous for its ability to maintain outstanding mechanical properties at both ambient and elevated temperatures.

Maraging 250 contains nickel as its main alloying element, along with cobalt, molybdenum, and titanium, which contribute to its strength and resistance to stress corrosion cracking. Its high strength-to-weight ratio, combined with excellent toughness, makes it a popular choice in industries where both performance and reliability are crucial.

Features of Maraging 250:

Specifications:

Composition of Maraging 250:

Element Percentage
Nickel (Ni) 17.0-19.0%
Cobalt (Co) 8.0-10.0%
Molybdenum (Mo) 4.5-5.0%
Titanium (Ti) 0.7-1.0%
Iron (Fe) Balance
Carbon (C) 0.03% Max
Manganese (Mn) 0.80% Max
Silicon (Si) 0.30% Max
Sulfur (S) 0.01% Max
Phosphorus (P) 0.015% Max

Physical Properties:

Property Value
Density 8.0 g/cm³
Melting Point 1410-1450°C (2570-2642°F)
Hardness (BHN) 330-450 BHN
Tensile Strength 1725 MPa (250,000 psi)
Yield Strength 1550 MPa (225,000 psi)
Elongation 12-15%
Reduction Area 40%
Modulus of Elasticity 200 GPa
Impact Toughness 30-50 J (Room temperature)
Thermal Conductivity 19 W/m·K
Coefficient of Thermal Expansion 13.0 x 10^-6 /°C