Maraging 300,Udimar 300 Other/Similar Specs,UNS K93120,E FORU

British Specs:，American Specs:AMS 6514 Bar, Tube and Forgings AMS 6521 Sheet, Strip and Plate MIL-S-46850 TYPE 4 ASTM A579 / AMS 6514 Powder，German Specs:WS 1.6354 WS 1.6358

### **Technical Data Sheet: Maraging Steel 300 / Udimar 300 & Similar Specifications (UNS K93120)** --- #### **1. Product Overview** The **Maraging Steel 300** family (commercially designated as **Udimar 300**, **UNS K93120**) encompasses ultra-high-strength martensitic age-hardening steels and their comparable alternatives. This product group includes various international equivalents, proprietary grades, and application-specific variants that offer the highest strength characteristics in the maraging steel series for different operational requirements and global market applications. --- #### **2. Chemical Composition Comparison (Weight %)** | Element | Maraging 300 | 18Ni(300) | Custom 300 | International Equivalent | |---------|--------------|-----------|------------|------------------------| | **Nickel (Ni)** | 18.0-19.0 | 18.0-19.0 | 18.0-18.8 | 18.0-19.0 | | **Cobalt (Co)** | 8.5-9.5 | 8.5-9.5 | 8.8-9.3 | 8.5-9.5 | | **Molybdenum (Mo)** | 4.6-5.2 | 4.6-5.2 | 4.8-5.1 | 4.6-5.2 | | **Titanium (Ti)** | 0.5-0.8 | 0.5-0.8 | 0.6-0.75 | 0.5-0.8 | | **Aluminum (Al)** | 0.05-0.15 | 0.05-0.15 | 0.08-0.12 | 0.05-0.15 | | **Carbon (C)** | ≤0.03 | ≤0.03 | ≤0.02 | ≤0.03 | --- #### **3. Mechanical Properties Comparison** **A. Strength Properties (Aged Condition)** | Grade | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | |-------|------------------------|----------------------|----------------| | **Maraging 300** | 2,000-2,140 | 1,930-2,070 | 8-10 | | **18Ni(300)** | 2,000-2,140 | 1,930-2,070 | 8-10 | | **Custom 300** | 2,050-2,170 | 1,980-2,100 | 7-9 | | **International Equivalent** | 2,000-2,140 | 1,930-2,070 | 8-10 | **B. Toughness & Hardness** | Grade | Fracture Toughness (MPa√m) | Hardness (HRC) | Impact Strength (J) | |-------|----------------------------|----------------|---------------------| | **Maraging 300** | 50-70 | 52-56 | 15-25 | | **18Ni(300)** | 50-70 | 52-56 | 15-25 | | **Custom 300** | 45-65 | 53-57 | 12-22 | | **International Equivalent** | 50-70 | 52-56 | 15-25 | --- #### **4. International Equivalents & Cross-References** **North American Standards:** - **UNS:** K93120 - **AMS:** 6514 - **ASTM:** A538 Grade 300 - **MIL-S:** 46850 **European Standards:** - **DIN:** 1.6354 - **EN:** X2NiCoMo18-9-5 - **AFNOR:** Z3CNK18-10 **Asian Standards:** - **JIS:** SUS 631 - **GB:** 00Ni18Co9Mo5Ti - **IS:** 5501 **Proprietary Grades:** - **VascoMax** 300 - **Carpenter** Custom 300 - **Aubert & Duval** AMS 6514 - **Saarstahl** VacoMax 300 --- #### **5. Application-Specific Variants** **Aerospace Grades:** - **AMS 6514:** Premium aircraft quality - **Enhanced Purity:** Triple vacuum melted versions - **Premium Quality:** Enhanced fracture toughness variants **Tooling Grades:** - **Machining Enhanced:** Improved machinability versions - **Wear Resistant:** Enhanced surface hardness grades - **Dimensional Stable:** Reduced distortion formulations **Special Applications:** - **Corrosion Resistant:** Enhanced environmental performance - **High Temperature:** Modified for elevated temperature service - **Welding Grade:** Optimized weldability compositions --- #### **6. Selection Guidelines** **Grade Selection Criteria:** - **Maximum Strength:** Standard Maraging 300 - **Enhanced Toughness:** Custom 300 variants - **Cost Optimization:** Commercial 300 grades - **Special Requirements:** Custom compositions **Application Matching:** | Application | Recommended Grade | Key Feature | |-------------|-------------------|-------------| | **Rocket Motor Cases** | AMS 6514 | Certified aerospace quality | | **Aircraft Components** | Premium 300 | Enhanced reliability | | **Tooling Applications** | Machining enhanced | Better machinability | | **Defense Systems** | Standard 300 | Optimal performance | | **International Projects** | Regional equivalents | Local certification | --- #### **7. Quality & Certification** **Standard Certifications:** - **Material Test Reports:** Chemical & mechanical properties - **Heat Treatment Certificates:** Process compliance - **NDT Reports:** Ultrasonic, dye penetrant - **Traceability:** Full material history **Special Certifications:** - **Aerospace:** AS9100, NADCAP - **Nuclear:** NQA-1 compliance - **Military:** MIL-STD requirements - **Medical:** ISO 13485 --- #### **8. Technical Support Services** **Available Services:** - **Material Selection:** Application-specific recommendations - **Process Optimization:** Heat treatment guidance - **Quality Planning:** Inspection protocols - **Technical Consulting:** Engineering support --- **Ordering Information:** - Standard and custom grades available - Complete documentation package - Global logistics support - Technical support included **Contact:** [Your Company Information] *Note: Specifications may vary between different manufacturers and specific product forms. Maraging 300 offers the highest strength in the standard maraging steel family. Consult technical data sheets for precise application recommendations and property guarantees.*

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 2622 gallon liquid totes Special package is available on request.