Maraging 350，Vascomax C350 Sheet，,E FORU

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

**Product Name:** Maraging 350 / Vascomax® C350 Sheet **Material Type:** Ultra-High-Strength Maraging Steel **Standard:** AMS 6521, MIL-S-8949, ASTM A579 --- ### **Overview** Maraging 350 (commercially known as **Vascomax® C350**) is an ultra-high-strength, low-carbon martensitic steel supplied in sheet form. It belongs to the 18% nickel maraging steel family and achieves a nominal yield strength of **350 ksi (≈2,410 MPa)** through a unique age-hardening heat treatment. This material is engineered for applications requiring the highest strength-to-weight ratio, exceptional toughness, and reliability under extreme conditions. --- ### **Key Advantages** - **Ultra-High Strength:** 350 ksi yield strength in aged condition. - **Exceptional Toughness:** High fracture resistance even at peak strength levels. - **Excellent Formability:** Can be stamped, bent, and machined in the annealed state. - **Dimensional Stability:** Minimal distortion during aging. - **Superior Fatigue Resistance:** Ideal for dynamic load applications. - **Weldability:** Compatible with common welding techniques (post-weld aging required). --- ### **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 | | 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) - **Thermal Conductivity:** 19.0 W/m·K at 20°C #### **Mechanical Properties (Aged Condition)** | Property | Value | |---------------------------|---------------------------------| | Tensile Strength | 2,450–2,550 MPa (355–370 ksi) | | Yield Strength (0.2% Offset) | 2,340–2,410 MPa (340–350 ksi)| | Elongation | 8–12% | | Hardness | 54–57 HRC | | Fracture Toughness (K_Ic) | 55–80 MPa√m | *Note:* Supplied in solution-annealed condition (28–32 HRC) for forming/machining. --- ### **International Standards** - **AMS 6521:** Maraging Steel 350 Sheet, Strip, and Plate - **MIL-S-8949:** Maraging Steel Plate, Sheet, and Strip - **ASTM A579/A579M:** Superstrength Alloy Steel Forgings - **AMS 2759/9:** Heat Treatment of Maraging Steels --- ### **Applications** #### **Aerospace & Defense** - Rocket motor casings and missile skins - Aircraft structural panels and wing components - Satellite and space vehicle structures - Armor plating for lightweight vehicles #### **Tooling & Industrial** - High-pressure mold plates for injection molding - Extrusion press components - Die-casting machine parts - Precision machinery frames #### **Specialized Fields** - Nuclear reactor components - High-performance automotive chassis - Marine and submarine structures - Critical medical device components --- ### **Fabrication Notes** 1. **Heat Treatment** - **Solution Annealing:** 820°C ± 10°C (1,500°F ± 20°F), air cool. - **Age Hardening:** 480°C ± 5°C (900°F ± 10°F) for 3–6 hours. 2. **Machining & Welding** - Machine in annealed condition using sharp tools and coolants. - Weld with matching filler metals; post-weld aging required. 3. **Forming** - Excellent bendability and stamping capability in annealed state. --- ### **Quality Assurance** - Ultrasonic testing per AMS 2631 - Chemical and mechanical certification - Full traceability from melt to final product --- ### **Conclusion** Maraging 350/Vascomax® C350 Sheet combines unparalleled strength, toughness, and fabricability, making it the material of choice for critical applications in aerospace, defense, and high-performance industries. Its ability to be formed and machined before age hardening ensures design flexibility and reliability in the most demanding environments. --- *Vascomax® is a registered trademark of leading specialty steel manufacturers. Typical values provided; verify specific data for critical applications.*

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 2657 gallon liquid totes Special package is available on request.