Maraging 300 Round Bars

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Maraging 300 Round Bars Specification

Specific Use
High-Strength Critical Components

Grade
Maraging 300

Length
100 mm to 6000 mm

Processing
Precision Ground, Peeled, Centerless Ground

Material
Maraging Steel 300

Tolerance
H9, H10, H11, 0.05 mm

Standard
ASTM A579 / A920, AMS 6514

Type
Round Bar

Technique
Cold Drawn / Hot Rolled

Finish
Bright, Black, Polished

Application
Aerospace, Tooling, Defense, Engineering Components

Diameter
2 mm to 350 mm

Yield Strength
Up to 2,030 MPa

Microstructure
Martensitic

Surface Condition
Smooth and Defect-Free

Heat Treatment
Solution Annealed & Aged

Manufacturer Certification
Available upon Request

Magnetism
Magnetic

Corrosion Resistance
Good

Density
8.1 g/cm

Ultimate Tensile Strength
Up to 2,050 MPa

Elongation
812% (after aging)

Hardness
Rockwell C 50-55 (after aging)

About Maraging 300 Round Bars

What Are Specification Maraging 300 Round Bars?

Specifications	AMS 6512
Dimension Standard	ASTM, ASME, AMS, GB/T, JIS
Bar Diameter	range from 0.125 to 14.00 diameter
Flat Bar Thickness	0.1-600mm,etc
Flat Bar Size	1-2500mm, etc
Length	1-12m, Random, Fix & Cut Length or as per clients requirement
Bar Surface	Bright, Polish & Black
Form	Round, Flat, Polished & Bright Finish

Equivalent material Of Maraging 300 Round Bars?

STANDARD	UNS	Material No	AMS	ASTM	Mil-S	BS	DTD	MSRR
Maraging Steel	K92890, K93120, S35000		6512	A538	46850D	S162	5212	6551

Chemical Composition Of Maraging 300 Round Bars?

Grade	C	Mn	Si	Co	Fe	Ni	Mo	Ti	Al
Maraging 300	.03max max	.10max max	.10max max	7.50 max	Bal	18.50 min	4.80 max	.40 max	.10 max

Mechanical Properties Of Maraging 300 Round Bars?

Grade	Density	Average Coefficient of Thermal Expansion	Modulus of Elasticity
Maraging 300	.289 lbs./cu.in	5.6 x 10-6 in./ in./ F	5.6 x 10-6 in./ in./ F

Superior Mechanical Performance

Maraging 300 Round Bars provide remarkable strength and high toughness due to advanced heat treatment processes, meeting demanding requirements for aerospace and other cutting-edge industries. With yield and tensile strengths exceeding 2,000 MPa and reliable elongation after aging, these bars ensure both durability and controlled flexibility in applications where failure is not an option.

Precision Processing & Versatile Finishes

Utilizing cold drawn or hot rolled techniques, Maraging 300 bars are available in bright, black, polished, precision ground, peeled, or centerless ground surfaces. They offer precise tolerances (H9, H10, H11, 0.05 mm), making them ideal where accuracy and a flawless finish are critical for high-performance assemblies. Smooth, defect-free surfaces enhance both aesthetics and functionality.

Certified Quality for Critical Applications

Manufactured according to international standards (ASTM A579/A920, AMS 6514), Maraging 300 bars from India are supplied with manufacturer certifications upon request. This quality assurance and compliance enable their use in critical sectors such as aerospace, defense, engineering, and high-strength tooling, ensuring dependable performance under extreme operational conditions.

FAQs of Maraging 300 Round Bars:

Q: How are Maraging 300 Round Bars processed to achieve high mechanical strength?

A: Maraging 300 Round Bars undergo a solution annealing process, followed by precise aging. This heat treatment refines the martensitic microstructure, leading to a Rockwell C hardness of 50-55 and enabling extremely high yield and tensile strengths, up to 2,030 MPa and 2,050 MPa respectively.

Q: What types of finishes and tolerances are available for Maraging 300 Round Bars?

A: These round bars can be supplied in bright, black, and polished finishes, with options like precision ground, centerless ground, or peeled surfaces. Tolerances offered include H9, H10, H11, and fine accuracy up to 0.05 mm, suitable for applications demanding tight dimensional control.

Q: When should Maraging 300 Round Bars be selected over conventional steel bars?

A: Maraging 300 Round Bars are ideal for applications where extreme strength, ductility, and toughness are essentialsuch as aerospace components, high-strength tooling, and defense partsoutperforming conventional steels in demanding settings requiring exceptional reliability.

Q: Where can Maraging 300 Round Bars be sourced from in India?

A: These bars are manufactured, supplied, exported, and traded by leading metallurgical firms in India, with the option to request certifications confirming adherence to ASTM and AMS standards.

Q: What is the benefit of the martensitic microstructure in Maraging 300 Round Bars?

A: The martensitic microstructure, achieved through meticulous heat treatment, imparts superior strength, consistent magnetism, and good corrosion resistance, ensuring performance reliability in critical engineering applications.

Q: How does the surface condition affect the usage of Maraging 300 Round Bars?

A: A smooth and defect-free surface, obtained through advanced processing like precision grinding and peeling, minimizes stress concentrations, enhances fatigue life, and ensures the material meets the stringent visual and technical standards required for high-precision environments.

Q: What certification and standards are available for Maraging 300 Round Bars?

A: Manufacturer certifications confirming compliance with ASTM A579/A920 and AMS 6514 standards are available upon request, ensuring product authenticity and suitability for regulated industries such as aerospace and defense.

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