C300 18ni (300) Gr73 Maraging Steel Ultra High Strength Alloy for War Industry

• Type: Stainless Steel Bars
• Standard: ASTM, AISI, GB, JIS, DIN, EN
• Grade: C300
• Certification: ISO, AISI, ASTM, GB, EN, DIN, JIS
• Shape: Round
• Technique: Hot Rolled,Cold Drawn,Forged
• Model NO.: C300
• Surface Treatment: Black,Grinding,Bright,Polish
• Delivery Condition: Hot Rolled,Cold Drawn,Forged
• Heat Treatment: Quenched,Tempered,Annealed
• Payments: T/T or L/C at Sight
• Delivery Time: in 10-50 Days
• Surface Require: Black,Grinding,Bright,Polish
• Tolerance: ±1%
• Alloy or Not: Is Alloy
• Model Number: C250 C300 C350
• Special Use: Cold Heading Steel
• Application: Tool Steel Bar
• Transport Package: Seaworthy Packing
• Specification: Diameter: 20mm-1000mm Length: 500mm-6000mm
• Trademark: Dongbei Special Steel
• Origin: Made in China
• HS Code: 7222110000
• Production Capacity: 2000tons/Month

Product Description

Product Description

 

Maraging Steel C300(AMS 6514, AMS 6521)

Type C300 cobalt containing grade of maraging steel, produced by vacuum arc re-melting, provides very high strength (nominally 300 ksi tensile) with an above average level of toughness. The alloy retains its strength up to 450°C and good notch impact is maintained down to minus 50°C and below. This material may be nitrided. C300 is usually supplied in the annealed condition where the microstructure consists of fine martensite. This structure is then maraged (precipitation hardened) to achieve final properties employing a relatively low temperature that results in the required combination of high strength and toughness. The alloy has a density of 8.02 g/cc.

Chemical composition% of C250 C300 C350 Alloy
 

Weight%

Ni

Co

Mn

Si

C

Al

Mo

S

P

Ti

Fe

Zr

Maraging C250

17.0-19.0

7.0-8.5

0.10 max

0.10 max

0.03 max

0.05-0.15

4.6-5.2

0.010 max

0.010 max

0.3 - 0.5

Bal

-

Maraging C300

18.0-19.0

8.0-9.5

0.10 max

0.10 max

0.03 max

0.05-0.15

4.6-5.2

0.010 max

0.010 max

0.55-0.80

Bal

-

Maraging C350

18.50

12.0

0.10 max

0.10 max

0.03 max

0.10

4.8

0.010max

0.010 max

1.4

-

0.01

 

Typical Mechanical Properties Of C300

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

Product Sales Information: 
 

Material	c350 c250 c300 steel round bar
Size	Diameter:20mm-1000mm Length:500mm-6000mm
Origin place	Made In China
Delivery Condition	Hot rolled,cold drawn,forged
Surface require	Black,grinding,bright,polish
Heat treatment	Quenched,Tempered,annealed
Packing	seaworthy packing ,wooden case ,carton,woven bag or at client's requires
Delivery time	In 10-50 days
Trade Term	EXW,FOB,CIF
Payments	T/T or L/C at sight
Port	China main Port,such as shanghai,Dalian,Shenzhen port.
MOQ	1 Ton

Typical Applications: 

1.Missile casings
2.Tooling
3.Ordnance mounting blocks
4.High performance autosport components,
5.Couplings
6.Jet engine and helicopter drive shafts
7.Load cells  
 

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FAQ

Q: Are you trading company or manufacturer ?
A: We are factory.
Q: How long is your delivery time?
A: Generally it is 5-10 days if the goods are in stock. or it is 15-20 days if the goods are not in stock, it is according toquantity.
Q: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample for free charge but do not pay the cost of freight.
Q: What is your terms of payment ?
A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance ,balance before shippment.lf you have another question, pls feel free to contact us.