Sichuan Liaofu Special Steel Company is one of the most experienced manufacturers and suppliers of maraging steel grades c250 c300 c350 in China. With over 20 years' experience, our factory offer high quality products made in China with competitive price. Welcome to contact us for wholesale service.
Maraging Steel Grades C250 C300 C350
Maraging Steel Grades C250, C300, C350 (Available in Bar, Plate, and Forged Forms)
Material Composition
Maraging steel is a family of low-carbon, high-nickel alloys strengthened through a unique age-hardening process. Key elements include:
Nickel (18-25%): Provides exceptional toughness and ductility.
Cobalt, Molybdenum, Titanium: Enhance strength and hardness during aging.
Carbon (<0.03%): Minimizes carbide formation for superior dimensional stability.
International Standards
Compliant with:
ASTM A564 (Standard Specification for Maraging Steels)
AMS 6504 (C250), AMS 6505 (C300), AMS 6506 (C350)
Custom certifications (ISO, EN, JIS) available upon request.
After quenching and tempering mechanical property:
|
σb MPa |
|
δ5 % |
Ψ % |
AKv J |
KIC |
HRC |
|
|
≥2255 |
≥2155 |
≥7 |
≥38 |
≥7 |
Actual test |
≥50 |
We also can produce Maraging c300=ams 6514 steel and maraging c250 steel=asm 6512.Please find chemical analyse difference below
| Element | Grade 200 | Grade 250 | Grade 300 | Grade 350 |
|---|---|---|---|---|
| Iron | balance | balance | balance | balance |
| Nickel | 17.0–19.0 | 17.0–19.0 | 18.0–19.0 | 18.0–19.0 |
| Cobalt | 8.0–9.0 | 7.0–8.5 | 8.5–9.5 | 11.5–12.5 |
| Molybdenum | 3.0–3.5 | 4.6–5.2 | 4.6–5.2 | 4.6–5.2 |
| Titanium | 0.15–0.25 | 0.3–0.5 | 0.5–0.8 | 1.3–1.6 |
| Aluminium | 0.05–0.15 | 0.05–0.15 | 0.05–0.15 | 0.05–0.15 |
| Tensile strength, MPa (ksi) | 1,379 (200) | 1,724 (250) | 2,068 (300) | 2,413 (350) |
Maraging steel chemical composition:
|
Grade |
Tensile Strength (ksi) |
Yield Strength (ksi) |
Elongation (%) |
Hardness (HRC) |
Primary Applications |
|
C250 |
250+ |
240+ |
10-12 |
45-47 |
Aerospace components, precision tools |
|
C300 |
300+ |
285+ |
8-10 |
48-50 |
Defense structures, die-casting molds |
|
C350 |
350+ |
330+ |
6-8 |
50-52 |
High-stress fasteners, rocket components |
Manufacturing Excellence
1. Premium Production Process •Vacuum Induction Melting (VIM): Ensures ultra-clean steel with minimal impurities (sulfur <0.001%, phosphorus <0.002%). •Age-Hardening Expertise: Controlled heat treatment in our ISO 9001-certified furnaces to achieve uniform mechanical properties throughout the material.
2. Customization Options •Form & Size: Bars (diameter 10mm-300mm), plates (thickness 5mm-150mm), and forgings (custom shapes). •Heat Treatment States: As-melted, pre-aged, or fully heat-treated to your specifications. •Testing & Certification: Comprehensive reports including mechanical properties, ultrasonic testing (UT), and chemical analysis.
Application
Aerospace & Defense
Aircraft Components: Landing gear, wing fittings, missile casings (C300/C350 for critical load-bearing parts).
Military Equipment: Armor plating, precision-guided weapon systems, and high-pressure hydraulic components.
Industrial Manufacturing
Mold & Die Making: C250/C300 for injection molds, extrusion dies, and stamping tools requiring high wear resistance and dimensional accuracy.
Heavy Machinery: High-stress gears, shafts, and fasteners in mining, oil & gas, and construction equipment.
Advanced Technology
Robotics & Automation: Lightweight robotic arms and precision bearings for high-speed, high-load applications.
Energy Sector: Turbine components, subsea connectors, and hydrogen storage system parts (resistant to hydrogen embrittlement).
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