Maraging 350，Vascomax C350 Foil，Shim，,E FORU

British Specs:，American Specs: AMS 6515 MIL-S-46850，German Specs: WS 1.6356

**Product Name:** Maraging 350 / Vascomax® C350 Foil & Shim **Material Type:** Ultra-High-Strength Maraging Steel Thin-Gauge Products **Standard:** AMS 6521, AMS 2247, ASTM A693 --- ### **Overview** Maraging 350 (Vascomax® C350) Foil and Shim materials represent the ultimate in ultra-high-strength, precision-thin product forms. These materials maintain the exceptional characteristics of the Maraging 350 alloy system while providing unparalleled performance in applications requiring minimal thickness with maximum strength. The foil and shim products are specifically engineered for weight-critical and space-constrained applications where conventional materials cannot meet the demanding strength-to-weight requirements. --- ### **Key Advantages** - **Ultra-High Strength in Thin Sections:** Maintains exceptional mechanical properties at minimal thicknesses - **Precision Thickness Control:** Manufactured to tight tolerances for critical applications - **Excellent Spring Properties:** High elastic limit ensures permanent set resistance - **Superior Flatness:** Essential for precision sealing and interface applications - **Age-Hardenable:** Can be formed in soft condition and strengthened later - **Excellent Surface Quality:** Suitable for critical exposed components --- ### **Chemical Composition (Typical Weight %)** | Element | Content (%) | Element | Content (%) | |---------------|-------------|-------------|-------------| | Nickel (Ni) | 18.0–19.0 | Cobalt (Co) | 11.5–12.5 | | Molybdenum (Mo)| 4.6–5.2 | Titanium (Ti)| 1.3–1.6 | | Carbon (C) | ≤0.03 | Manganese (Mn)| ≤0.10 | | Silicon (Si) | ≤0.10 | Sulfur (S) | ≤0.010 | | Aluminum (Al) | 0.05–0.15 | Zirconium (Zr)| 0.01–0.02 | | Boron (B) | 0.003–0.005 | Iron (Fe) | Balance | --- ### **Physical & Mechanical Properties** #### **Physical Properties** - **Density:** 8.10 g/cm³ (0.292 lb/in³) - **Melting Point:** 1,410°C (2,570°F) - **Thermal Expansion Coefficient:** 10.2 × 10⁻⁶/°C (20–100°C) - **Modulus of Elasticity:** 185–190 GPa (27 × 10⁶ psi) #### **Mechanical Properties (Aged Condition)** | Property | Foil (≤0.5mm) | Shim (0.5-3.0mm) | |----------|---------------|------------------| | Tensile Strength | 2350-2500 MPa | 2450-2550 MPa | | Yield Strength (0.2%) | 2250-2400 MPa | 2340-2410 MPa | | Elongation | 3-6% | 6-10% | | Hardness | 52-56 HRC | 54-57 HRC | | Flatness Tolerance | ±0.001"/in | ±0.0005"/in | *Supplied in solution-annealed condition (30-35 HRC) for forming* --- ### **Product Specifications** #### **Thickness Ranges** - **Precision Foil:** 0.025 mm to 0.5 mm (0.001" to 0.020") - **Shim Stock:** 0.5 mm to 3.0 mm (0.020" to 0.125") #### **Standard Tolerances** - **Thickness:** ±0.0001" for foil, ±0.0005" for shim stock - **Width:** Up to 600 mm (24") depending on thickness - **Surface Finish:** 8-16 μin (0.20-0.41 μm) RA --- ### **International Standards** - **AMS 6521G:** Maraging Steel 350 Sheet, Strip, and Plate - **AMS 2247:** Steel Foil and Strip, Corrosion and Heat-Resistant - **ASTM A693:** Precipitation-Hardening Stainless and Maraging Steel - **MIL-S-8949:** Maraging Steel Plate, Sheet, and Strip --- ### **Applications** #### **Aerospace & Defense** - Precision shims for aircraft engine assemblies - Thin diaphragms for pressure sensors and transducers - Spring elements in guidance systems - High-strength foil for radiation shielding - Missile component spacers and retainers #### **Electronics & Semiconductor** - Lead frames for high-reliability electronics - Shielding for electromagnetic interference - Precision springs in connector systems - Heat spreaders in high-power devices #### **Medical Devices** - Surgical instrument components - Implantable device elements - Diagnostic equipment springs - Precision shims for medical imaging systems #### **Industrial Applications** - High-strength sealing washers - Precision spacers in bearing assemblies - Spring components in measuring instruments - Wear strips in high-load applications --- ### **Fabrication Guidelines** #### **Heat Treatment** - **Solution Annealing:** 820°C ± 10°C (1,500°F ± 20°F) - **Age Hardening:** 480°C ± 5°C (900°F ± 10°F) for 3–6 hours - Special atmosphere treatments available to prevent oxidation #### **Manufacturing Processes** - Precision stamping and blanking - Photochemical etching for complex geometries - Laser cutting for prototype quantities - CNC punching for production volumes --- ### **Quality Assurance** #### **Standard Testing** - 100% dimensional verification - Surface quality inspection - Mechanical property testing on witness samples - Chemical analysis certification - Flatness verification #### **Special Testing Available** - Fatigue testing - Stress rupture testing - Corrosion resistance evaluation - Microstructural analysis --- ### **Packaging & Handling** - Interleaved with protective paper - Wound on precision cores (foil) - Flat-packed with protective separators (shim stock) - Moisture-proof wrapping - Clean room packaging available --- ### **Technical Support Services** - Material selection assistance - Design for manufacturability consulting - Prototype development - Custom heat treatment services - Application engineering support --- ### **Conclusion** Maraging 350/Vascomax® C350 Foil and Shim materials provide engineers with an unparalleled combination of ultra-high strength and precision thinness. These products enable innovative solutions in weight-critical and space-constrained applications across aerospace, electronics, medical, and industrial sectors. The material's unique ability to be formed in the soft condition and then strengthened to the highest levels available in commercial alloys makes it indispensable for advanced engineering applications where conventional materials cannot meet the demanding performance requirements. --- *Vascomax® is a registered trademark of leading specialty steel manufacturers. All technical data are typical values and should be verified for specific applications. Consult manufacturer's specifications for project-specific requirements and performance data.*

Packing of Standard Packing: Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Solutions are packaged in polypropylene, plastic or glass jars up to palletized 2662 gallon liquid totes Special package is available on request.