VascoMax 350 CVM (Maraging 350)
General Characteristics of VascoMax 350 CVM (Maraging 350)
VascoMax 350 CVM (Maraging 350) provides excellent strength and ductility at 340000 psi and higher, making it ideally suited for the aerospace and rocket industries. VascoMax 350 CVM, offering easy welding and heat treatment capabilities, meets demanding structural and tooling requirements.
Chemical Composition of VascoMax 350 CVM
- Molybdenum 4.00-5.00
- Nickel 17.00-19.00
- Cobalt 11.00-12.75
- Titanium 1.20-1.45
- Aluminum 0.05-0.15
- Boron 0.003
- Zirconium 0.02
- Calcium 0.05
- Carbon 0.03 max
- Silicon 0.10 max
- Manganese 0.10 max
- Sulfur 0.01 max
- Phosphorus 0.01 max
- Iron balance
Heat Treatment of VascoMax 350 CVM
- Anneal by holding at 1475° to 1525°F (802° to 829°C) for one hour for each inch of thickness, air cool
- Age after solution anneal by holding at 900° to 950°F (482° to 510°C) between 3 and 6 hours, then air cool
- Nitriding can be achieved by heating between 800°and 850°F (427° and 454°C) for at least 20 hours
Applications of VascoMax 350 CVM
- Extrusion tooling
- Pins
- Forging inserts and dies
- Shear blades
- Mechanized equipment
- Aerospace components
Machinability of VascoMax 350 CVM
- Difficult to machine when fully hardened
- Can be readily machined when solution treated or annealed
- Similar to Vasco 4340
- Rough turning with high-speed steel tools
- 80 sfpm
- 0.009 ipr feed
- 0.060” depth
- Finish grinding
- 3000-4500 sfpm wheel speed
- 20 ft./min table speed
- 0.003”/pass down feed
- 0.025”/pass cross feed
Workability of VascoMax 350 CVM
- Forge between 2300° and 1600°F (1260° to 871°C)
- Roll between 1900° and 1500°F (1038° and 816°C)
- Annealing can increase hardness from 28 to 30 Rockwell C to 35 Rockwell C
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