Ultra-high strength martensitic steel achieving up to 2390 MPa tensile strength through precipitation hardening. Essential for aerospace, defense, and precision tooling applications.
Maraging steels are a class of ultra-high strength, low-carbon martensitic steels that derive their exceptional strength from the precipitation of intermetallic compounds during aging heat treatment, rather than from carbon content. The name "maraging" comes from "martensitic aging." This unique strengthening mechanism provides an outstanding combination of ultra-high strength, good ductility and toughness, excellent dimensional stability, and superior machinability in the annealed condition.
FountainHead Alloys is a leading manufacturer, exporter and supplier of Maraging Steel products in Mumbai, India, serving clients in 60+ countries with grades 250, 300, and 350.
Get Maraging Steel QuoteMaraging steel available in all standard and custom product forms.
6mm to 500mm dia
0.5mm to 100mm
Seamless & Welded
All types & sizes
Bolts, Nuts, Studs
All gauges
| Element | Ni | Co | Mo | Ti | Al | C | Mn | Si | P | S | Fe |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Maraging 250 | 17.0-19.0 | 7.0-8.5 | 4.6-5.2 | 0.3-0.5 | 0.05-0.15 | 0.03 max | 0.10 max | 0.10 max | 0.01 max | 0.01 max | Balance |
| Property | Value |
|---|---|
| Tensile Strength | 1720 MPa min |
| Yield Strength (0.2%) | 1650 MPa min |
| Elongation | 8% min |
| Hardness | 48-52 HRC |
| Property | Value |
|---|---|
| Density | 8.00 g/cm³ |
| Melting Range | 1413-1454°C |
| Thermal Conductivity | 25.5 W/m·K |
| UNS | AMS | MIL | ASTM | W.Nr |
|---|---|---|---|---|
| K92890 | 6512 | MIL-S-46850 | A538 Grade B | 1.6354 |
| Element | Ni | Co | Mo | Ti | Al | C | Mn | Si | P | S | Fe |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Maraging 300 | 18.0-19.0 | 8.5-9.5 | 4.6-5.2 | 0.5-0.8 | 0.05-0.15 | 0.03 max | 0.10 max | 0.10 max | 0.01 max | 0.01 max | Balance |
| Property | Value |
|---|---|
| Tensile Strength | 2050 MPa min |
| Yield Strength (0.2%) | 1950 MPa min |
| Elongation | 7% min |
| Hardness | 52-56 HRC |
| Property | Value |
|---|---|
| Density | 8.00 g/cm³ |
| Melting Range | 1413-1454°C |
| Thermal Conductivity | 25.5 W/m·K |
| UNS | AMS | MIL | ASTM | W.Nr | DIN |
|---|---|---|---|---|---|
| K93120 | 6514 | MIL-S-46850 | A538 Grade C | 1.6356 | X2NiCoMo18-9-5 |
| Element | Ni | Co | Mo | Ti | Al | C | Mn | Si | P | S | Fe |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Maraging 350 | 17.0-18.0 | 11.5-12.5 | 4.6-5.2 | 1.3-1.6 | 0.05-0.15 | 0.03 max | 0.10 max | 0.10 max | 0.01 max | 0.01 max | Balance |
| Property | Value |
|---|---|
| Tensile Strength | 2390 MPa min |
| Yield Strength (0.2%) | 2300 MPa min |
| Elongation | 5% min |
| Hardness | 56-60 HRC |
| Property | Value |
|---|---|
| Density | 8.00 g/cm³ |
| Melting Range | 1413-1454°C |
| Thermal Conductivity | 25.5 W/m·K |
| UNS | AMS | MIL |
|---|---|---|
| K93160 | 6515 | MIL-S-46850 |
Full material traceability with mill test certificates and third-party inspection.
Extensive inventory of Maraging Steel grades in all product forms for immediate dispatch.
Exporting to 60+ countries with reliable logistics and custom packaging.