Maraging 300 Steel Round Bar

Maraging 300 Steel Round Bar: Maraging 300 is an ultra-high-strength, low-carbon iron-nickel alloy designed to gain strength through precipitation aging rather than conventional carbon hardening.

Download Mozaic Maraging 300 Steel Round Bar specification reference (PDF)

Maraging 300 Steel Round Bar — Technical and Purchasing Reference

Reference identification, product condition and processing considerations
Item Guidance
Material / product designation Maraging 300 Steel Round Bar
Relevant purchasing specification Specify Maraging 300 / C300 and applicable AMS grade standard
Material / delivery condition Require solution-treated/aged condition and corresponding mechanical properties
Common machining or wear uses Aerospace structural parts, high-strength shafts, tooling and mechanical components
Service/selection consideration The aging condition and melt route materially affect guaranteed strength; a trade name alone is insufficient.
Mozaic bar-processing scope Custom OD grinding, polishing, straightening, cutting and packaging by inquiry

Reference information only, not a certified melt analysis, mechanical test report or inventory guarantee. Use the current governing material/product specification and lot-specific mill documentation to qualify any order.

Application Selection and Material Limitations

The aging condition and melt route materially affect guaranteed strength; a trade name alone is insufficient. Common uses include aerospace structural parts, high-strength shafts, tooling and mechanical components. Suitability depends on grade chemistry, dimensions, strength and condition, the working environment and any surface or dimensional specifications. A related material should not be substituted solely because its marketing name sounds similar.

Centerless Grinding and Bar Finishing

Mozaic Precision Metals can review sourcing and centerless grinding, bar straightening, polishing, chamfering, cut-to-length and packaging for this product. Specify starting size, finished OD and diameter tolerance, length, surface roughness, straightness and inspection requirements separately. Actual capability depends on the material condition and geometry.

Related Grades and Product Alternatives

Frequently Asked Questions

Which material condition should I order?

Require solution-treated/aged condition and corresponding mechanical properties. Include the applicable purchasing standard, section size, certifications and target properties; heat-treatment schedules and mechanical values cannot be assumed across all conditions.

Can I substitute a similar grade?

The aging condition and melt route materially affect guaranteed strength; a trade name alone is insufficient. Obtain approval against the drawing and verify the ordered chemistry, mechanical properties, finishing response and documentation.

Request a Quote for Maraging 300 Steel Round Bar

Send the grade, specifications, temper/condition, bar or tube dimensions, quantity and finish requirements to sales@mozaicprecision.com or call 847-637-8379. You can also request pricing online.

The Reliable Maraging Steel Supplier

At Mozaic Precision Metals, we supply premium maraging steel
round bar stock engineered for exceptional strength, toughness, and reliability.
Known for its ultra-high strength and excellent machinability, maraging steel
is widely used in aerospace, tooling, defense, and high-performance
engineering applications.

With over 60 years of combined expertise in precision grinding and metal
supply, our leadership team ensures every maraging steel bar meets strict
quality standards. Whether you need Maraging 300 or other grades, we provide
consistent material that manufacturers and engineers trust for critical
applications.

Choosing the right supplier is vital in maintaining a dependable supply chain.
As a trusted source for maraging steel, Mozaic Precision Metals
delivers not only raw materials but also the confidence that your projects
will be supported with the highest-quality alloys available.

Request a custom quote today and partner with Mozaic
Precision Metals for reliable maraging steel supply tailored to your
requirements.

Applications of Maraging 300 Steel in Aerospace, Defense, and Other Industries

Maraging 300 steel is a high-strength, low-alloy steel engineered for
durability, toughness, and resistance to both corrosion and fatigue. Its unique
composition—including nickel, cobalt, molybdenum, titanium, aluminum, and
carbon—gives it exceptional mechanical properties, making it a trusted choice
for critical applications across aerospace, defense, medical, and industrial
sectors.

Aerospace Industry

With its excellent strength-to-weight ratio and fatigue resistance, Maraging
300 is widely used in aerospace components such as:

  • Rocket motor cases
  • Landing gear systems
  • Aircraft structural components

Defense Industry

The steel’s high toughness and reliability make it ideal for defense
applications, including:

  • Armored vehicle parts
  • Armor-piercing projectiles
  • Missile and weapon system components

Medical Industry

Thanks to its biocompatibility and high strength, Maraging 300 is also used
in:

  • Surgical instruments
  • Medical implants
  • Durable medical tools requiring high precision

Oil and Gas Industry

Resistant to corrosion and capable of withstanding extreme pressure, Maraging
300 is commonly used in:

  • Downhole drilling tools
  • Subsurface safety valves
  • Critical oilfield components

Sports Industry

The alloy’s strength and durability also make it valuable in performance
sports equipment, including:

  • Golf club heads
  • Tennis rackets
  • High-performance recreational gear

At Mozaic Precision Metals, we supply precision-ground
Maraging 300 round bar stock tailored to your project requirements. Whether
you’re in aerospace, defense, medical, or industrial manufacturing, this alloy
delivers unmatched reliability and performance.

Request a quote today to secure Maraging 300 steel for
your next critical application.