Maraging 350，Vascomax C350 Tube，,E FORU

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

**Product Technical Specification: Maraging 350 / Vascomax® C350 Tube** **Overview** Maraging 350/Vascomax® C350 Tube represents the pinnacle of ultra-high-strength tubular technology, engineered for mission-critical applications where maximum strength-to-weight ratio and reliability under extreme conditions are paramount. This premium-grade, low-carbon martensitic steel achieves its exceptional mechanical properties through a unique age-hardening process, offering unmatched performance in tubular configurations for aerospace, defense, and high-technology industries. **Key Characteristics & Advantages** - **Ultra-High Strength-to-Weight Ratio:** Ideal for weight-sensitive structural applications - **Exceptional Pressure Containment:** Superior burst strength for high-pressure systems - **Outstanding Fracture Toughness:** High resistance to crack propagation despite extreme strength - **Excellent Fatigue Performance:** Superior endurance under cyclic loading conditions - **Superior Dimensional Stability:** Minimal distortion during age-hardening process - **Excellent Fabricability:** Can be machined, welded, and formed in solution-annealed condition --- **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 | | **Phosphorus (P)** | ≤0.010 | **Aluminum (Al)** | 0.05-0.15 | | **Boron (B)** | 0.003-0.005 | **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:** 1410°C (2570°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 (After Full Heat Treatment):** | Property | Typical Value | Condition | |----------|---------------|-----------| | **Tensile Strength** | 2450-2550 MPa (355-370 ksi) | Aged | | **Yield Strength (0.2% Offset)** | 2340-2410 MPa (340-350 ksi) | Aged | | **Elongation** | 8-12% | Aged | | **Hardness** | 54-57 HRC | Aged | | **Fracture Toughness (K_Ic)** | 55-80 MPa√m | Aged | *Solution-annealed condition: 28-32 HRC* --- **Product Specifications & Sizes** **Size Range:** - **Outside Diameter:** 0.125" to 8" (3.18 mm to 203 mm) - **Wall Thickness:** 0.015" to 0.500" (0.38 mm to 12.7 mm) - **Length:** Standard 20 feet (6 meters), custom lengths available **Manufacturing Processes:** - Seamless cold-drawn tubing - Welded and drawn precision tubing - Honed and polished internal surfaces - Special surface finishes available **Tolerances:** - OD Tolerance: ±0.001" to ±0.005" - Wall Thickness: ±5% to ±10% - Straightness: 0.001" per inch maximum --- **International Standards & Specifications** **Material Standards:** - **AMS 6521G:** Maraging Steel 350 Bars, Forgings, and Rings - **ASTM A579/A579M:** Superstrength Alloy Steel Forgings - **MIL-S-8949:** Maraging Steel Plate, Sheet, and Strip **Tubing-Specific Standards:** - **AMS-T-9046:** Titanium and Titanium Alloy Tubing (similar quality requirements) - **ASTM A554:** Stainless Steel Mechanical Tubing - **AMS 2759/9:** Heat Treatment of Maraging Steels --- **Product Applications** **Aerospace & Defense:** - **Rocket Motor Cases:** Solid and liquid propellant systems - **Aircraft Hydraulic Systems:** High-pressure actuator tubing - **Missile Airframe Structures:** Structural tubing components - **Space Vehicle Components:** Fuel and hydraulic lines - **Helicopter Rotor Systems:** Drive shaft and control tubing **Precision Engineering:** - **High-Pressure Instrumentation Tubing** - **Hydraulic Cylinder Tubing** - **Precision Shafting and Bushings** - **Robotic Actuator Components** **Oil & Gas:** - **Downhole Tool Components** - **High-Pressure Sensor Tubing** - **Control Line Conduits** **Special Applications:** - **Nuclear Industry Components** - **Cryogenic Transfer Lines** - **High-Performance Automotive:** Fuel injection and hydraulic systems --- **Fabrication & Processing** **Heat Treatment:** - **Solution Annealing:** 820°C ± 10°C (1500°F ± 20°F), air cool - **Age Hardening:** 480°C ± 5°C (900°F ± 10°F) for 3-6 hours **Machining & Welding:** - Excellent machinability in solution-annealed condition - Welding recommended in annealed condition using matching filler metals - Post-weld aging required for full strength recovery - Compatible with GTAW, GMAW, and laser welding processes --- **Quality Assurance** **Standard Testing:** - 100% Ultrasonic inspection per AMS 2631 - Eddy current testing - Hydrostatic pressure testing - Dimensional verification - Surface quality inspection **Additional Quality Features:** - Full material traceability - Certified chemical and mechanical properties - Heat treatment certification - Non-destructive testing records --- **Conclusion** Maraging 350/Vascomax® C350 Tube offers an unparalleled combination of ultra-high strength, exceptional toughness, and precision manufacturing quality. Its unique ability to be fabricated in the soft condition and then transformed into one of the world's strongest materials makes it indispensable for critical applications in aerospace, defense, and high-performance industrial sectors. The material's proven reliability and superior mechanical properties ensure its continued use in the most demanding engineering applications where performance cannot be compromised. --- **Note:** 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 2655 gallon liquid totes Special package is available on request.