Maraging Steel C300 Round Bar

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Maraging Steel C300 Round Bar Specification

Technique
Forged / Hot Rolled / Cold Drawn

Type
Round Bar

Tolerance
H9, H10, H11 or as per requirement

Grade
C300 (18Ni (300))

Finish
Bright, Polished, Black

Diameter
4 mm - 350 mm

Application
Aerospace, Tooling, Moulds, Defense, Engineering Components

Material
Maraging Steel

Length
100 mm - 6000 mm

Specific Use
Precision Components, High Strength Structural Parts

Standard
ASTM A579 / A579M, AMS 6514

Processing
Annealed, Solution Treated & Aged

Form
Solid Bar

Surface Condition
Peeled / Turned / Centerless Ground / Polished

Density
8.0 g/cm

Hardness
48-54 HRC (aged)

Ultimate Tensile Strength
~2050 MPa (min, aged)

Elongation
10-15% (aged)

Yield Strength
~200 ksi (1380 MPa, aged)

Corrosion Resistance
Good (not as high as stainless steel)

Magnetic Properties
Magnetic

Heat Treatment
Solution Annealed at 820C, Aged at 480-500C

About Maraging Steel C300 Round Bar

What Are Specification Maraging Steel C300 Round Bar?

Standard	AMS 6514, AMS 6515, MIL-S-46850, ASTM A538
Dimensions	DIN, EN, ASTM, JIS, ASME, BS, AISI
Round Bar Size	Diameter: 3-~800mm
Flat Bar Size	Thickness: 2 -100mm
Flat Bar Size	Width: 10 to 500mm
Square Bar Size	4 to 100mm
Tolerance	H8, H9, H10, H11, H12, H13K9, K10, K11, K12 or as per clients requirements
Finish	Cold (bright) drawn, centreless ground, hot rolled, smooth turned, peeled, slit rolled edge, hot rolled annealed, Rough Turned, Bright, Polish, Grinding, Centreless Ground & Black
Surface	Hot Rolled Pickled, Bright, Sand Blasting Finished, Cold Drawn, Hairline,Polished
Condition	Hardened & tempered, annealed
Technique	Cold Drawn, Hot Rolled, Forged Round Bar,Cold Rolled, Rod
Processing	Bar cutting to 650mm
Form	Rod, Round, Flat Bar, Square, Round Rod, Forging etc.

Equivalent material Of Maraging Steel C300 Round Bar?

STANDARD	WERKSTOFF NR.	UNS	GB	BS
Maraging 300	1.6354 / 1.6358	K93160	1Cr18Ni9	S162
Vascomax 350	1.6356	K93120	1Cr18Ni9	S162

Chemical Composition Of Maraging Steel C300 Round Bar?

Weight%	Ni	Co	Mn	Si	C	B	P	S	Al	Mo	Ti	Zr
Maraging 300	18.0-19.0	8.0-9.5	0.10 max	0.10 max	0.03 max	-	0.010 max	0.010 max	0.05-0.15	4.6-5.2	0.55-0.80	-
Maraging 350	18.50	12.0	0.10 max	0.10 max	0.03 max	0.003	0.01 max	0.01 max	0.10	4.8	1.40	0.01

Mechanical Properties Of Maraging Steel C300 Round Bar?

Material	0.2 % Yield Strength ksi	Ultimate Tensile Strength ksi	Elongation in 4D(%)	Reduction of Area %	Hardness Rc
Maraging 300, Solution Annealed 1500 F (816C), 1hr, AC	120	150	16	70	30
Solution Annealed Plus Aged 900 F (482C), 3 hrs AC	280	290	8	40	52
Maraging 350	330	350	8	-	-

Exceptional Mechanical Strength

Maraging Steel C300 Round Bars are recognized for their remarkable yield and tensile strength after proper heat treatment. With ultimate tensile strength exceeding 2050 MPa and yield strength of about 1380 MPa, these bars provide superior performance in high-stress applications, making them preferred for critical aerospace and engineering components.

Superior Dimensional Consistency

Manufactured under rigorous international standards like ASTM A579 and AMS 6514, these round bars offer tight tolerances (H9, H10, H11) and impressive surface finishes ranging from bright and polished to centerless ground. This consistency makes them ideal for precision components requiring dependable mechanical and dimensional integrity.

Tailored for High-Performance Applications

With its reliable properties and adaptability, Maraging Steel C300 Round Bar is primarily employed in industries needing exceptional strength and ductility. Typical applications include aerospace structures, tooling, moulds, defense and engineering components, where superior machine-ability and predictable aging response are essential.

FAQs of Maraging Steel C300 Round Bar:

Q: How is Maraging Steel C300 Round Bar typically used in industry?

A: Maraging Steel C300 Round Bars are extensively used in manufacturing high-strength structural parts, aerospace components, tooling inserts, moulds, and defense parts due to their outstanding mechanical properties and predictable performance after heat treatment.

Q: What is the process for heat treating Maraging Steel C300 Round Bar to achieve optimum properties?

A: The round bar is first solution annealed at approximately 820C, which dissolves alloying elements. It is then cooled and aged at 480-500C, resulting in precipitation hardening that enhances both strength and hardness to the desired levels.

Q: Where can Maraging Steel C300 Round Bar be sourced in India?

A: This product is available through a network of exporters, manufacturers, suppliers, and traders across India, supplying bars in various sizes, tolerances, and surface finishes as per customer requirements.

Q: What are the main benefits of using C300 Maraging Steel in precision components?

A: C300 Maraging Steel features high yield and tensile strength, good ductility, and stable mechanical properties after aging, making it ideal for demanding precision components. Its reliable response to heat treatment ensures consistent performance in critical applications.

Q: How does the corrosion resistance of Maraging Steel C300 compare to stainless steel?

A: While Maraging Steel C300 offers good corrosion resistance suitable for most engineering environments, it does not match the corrosion resistance of stainless steels and should be protected or coated in aggressive environments where necessary.

Q: What forms and finishes are available for Maraging Steel C300 Round Bars?

A: These round bars are supplied as solid bars in bright, polished, black, centerless ground, or peeled/turned surface conditions, with diameters from 4 mm to 350 mm and lengths up to 6000 mm, tailored to specific engineering needs.

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