Short answer: Maraging steel is a low-carbon iron-nickel steel strengthened by aging with cobalt, molybdenum and titanium instead of quenching, reaching yield strengths of 1700 to 2400 MPa with high toughness and easy machining before aging, so 18Ni 300 and 350 serve aerospace, tooling and shafts where ordinary alloy or tool steel cannot hold the load, supplied as certified bar and plate with mill certificate.
At a Glance
What Maraging Steel Is
Aging gives strength without quench cracks, with the basis in our Alloy Steel Supplier and strength notes in our Metal Strength Comparison; hardness detail is in our Hardness Comparison.
Grades and Use
18Ni 300 serves molds and aero and 350 serves shafts and arms, with fatigue notes in our Metal Fatigue Guide and aerospace context in our Aerospace Guide.
Fabrication and Age
Bar is machined soft then aged for hardness, with the method in our Heat Treatment Guide and machining in our Machining Guide; finish is in our Surface Treatment Guide.
Quality and Sourcing
Maraging stock is checked by inspection, with methods in our Quality Inspection Guide; buyers confirm condition via our Mill Test Certificate Guide and pack per our Export Packing Guide.
Get a Quote
Tell HXSCO your requirements and we will respond with a competitive quote and lead time.
Veelgestelde vragen
Low-carbon Fe-Ni steel hardened by aging, not quench.
Yield up to about 2400 MPa with good toughness.
18Ni 300 for molds and aerospace parts.
Yes – machined soft before the final age.
Confirm condition and certificate, then pack for export.
Source Maraging Steel with HXSCO
HXSCO supplies 18Ni 250, 300 and 350 maraging steel in bar and plate with mill certificate. Send grade, size and condition for a quote.