Maraging 250 is a low-carbon, age-hardenable martensitic steel strengthened through intermetallic precipitation rather than carbon. The term"maraging"derives from"martensitic aging,"describing its unique strengthening mechanism. Produced via Vacuum Induction Melting (VIM) and Vacuum Arc Remelting (VAR), this material delivers an exceptional combination of ultra-high strength (up to 250 ksi yield), excellent fracture toughness, and superior weldability with minimal heat treatment distortion .
1. Product Specifications & Physical DataZYTC Alloy supplies Maraging C250 in comprehensive mill forms for aerospace, defense, and tooling applications requiring verified mechanical properties and complete material traceability. Available Forms: Bar, wire, rod, sheet, plate, strip, seamless and welded pipe/tube, forgings, pipe fittings, and flanges . Specifications: AMS 6512, MIL-S-46850, UNS K92890, Werkstoff Nr. 1.6359 .
| Chemical Composition (Weight %) | Maraging C250 Specification |
|---|
| Nickel (Ni) | 17.0 - 19.0 | | Cobalt (Co) | 7.0 - 8.5 | | Molybdenum (Mo) | 4.6 - 5.2 | | Titanium (Ti) | 0.30 - 0.50 | | Aluminum (Al) | 0.05 - 0.15 | | Carbon (C) | 0.03 max. | | Manganese (Mn) | 0.10 max. | | Silicon (Si) | 0.10 max. | | Phosphorus (P) | 0.010 max. | | Sulfur (S) | 0.010 max. | | Chromium (Cr) | 0.50 max. | | Copper (Cu) | 0.50 max. | | Iron (Fe) | Balance |
| Physical Properties | Metric | Imperial |
|---|
| Density | 8.03 - 8.1 g/cm³ | 0.290 - 0.293 lb/in³ | | Melting Range | 1410 - 1460°C | 2570 - 2660°F | | Modulus of Elasticity | 190 GPa | 27.5 × 10⁶ psi | | Curie Temperature | 495°C | 925°F | | Thermal Conductivity (RT) | 19.8 W/m·K | 137 BTU·in/hr·ft²·°F |
| Mechanical Properties (Aged) | Metric | Imperial |
|---|
| Tensile Strength (min.) | 1758 MPa | 255 ksi | | Yield Strength (0.2% offset, min.) | 1724 MPa | 250 ksi | | Elongation (4D, min.) | 6% | 6% | | Reduction of Area (min.) | 35% | 35% | | Hardness | ≥ 48 HRC | ≥ 48 HRC |
| Heat Treatment Sequence | Temperature | Time | Cooling |
|---|
| Solution Anneal | 815°C (1500°F) | 1 hour | Air cool | | Aging (Precipitation) | 482°C (900°F) | 3-6 hours | Air cool |
2.Fabrication & Material ComparisonMaraging 250 offers superior fabricability compared to conventional high-strength steels, with simple heat treatment and excellent dimensional stability. Solution Annealing: 815°C (1500°F) × 1 hour, air cool; produces soft martensitic structure (30-35 HRC) for machining . Aging: 482°C (900°F) × 3-6 hours, air cool; develops full strength (48-52 HRC) . Hot Working: 955-1260°C (1750-2300°F); reheat as necessary; avoid working below 925°C . Cold Working: Excellent formability in annealed condition; work-hardening rate low . Machining: Good machinability in solution-annealed condition (30-35 HRC); carbide tooling recommended . Welding: Readily welded using GTAW, GMAW, and electron beam processes; matching filler metal recommended; post-weld aging restores full strength .
ApplicationsAerospace & Defense: Missile and rocket motor cases, landing gear components, aircraft structural parts, helicopter driveshafts Ordnance: Advanced munitions, gun barrels, recoil mechanisms Tooling: Extrusion dies, die-casting tooling, injection molds, cold heading tools High-Performance Machinery: Gears, shafts, fasteners, couplings, high-pressure components Sports Equipment: Racing components, high-performance springs Nuclear: Centrifuge components, high-strength fasteners
Contact ZYTC Alloy for certified Maraging 250 materials with complete traceability, AMS 6512 specifications, technical datasheets, and competitive pricing on standard sizes or custom-fabricated components. Email: daisy@zytcsteel.com WhatsApp/WeChat: +86 17335753350 |
