• Suzhou Xunshi New Material Co., Ltd
    Daniel Weree
    Have been business relationship for 3 years, great partner for Nickel Cobalt Alloy!
  • Suzhou Xunshi New Material Co., Ltd
    Carolina Fasio
    On-time delivery. And support is good and fast.
Contact Person : Allen Sun
Phone Number : +86 18112628895
WhatsApp : +8618112628895

Maraging 300 C300 Martensite Stainless Steel With High Strength Elasticity

Place of Origin China
Brand Name XUNSHI
Certification ISO 9001:2015
Model Number Maraging 300
Minimum Order Quantity 50
Price Negotiable
Packaging Details Plywood case
Delivery Time 30-35 days
Payment Terms T/T
Supply Ability 500kg per week

Contact me for free samples and coupons.

WhatsApp:0086 18588475571

Wechat: 0086 18588475571

Skype: sales10@aixton.com

If you have any concern, we provide 24-hour online help.

Product Details
Equal Grade 18Ni300,Maraging 300,C300,3J33 Diameter Range 10-300mm
Product Name 300 Stainless Steel Certification ISO 9001:2015
Model Maraging 300 Brand XUNSHI
High Light

18Ni300 Martensite Stainless Steel


Maraging 300 Martensite Stainless Steel

Leave a Message
Product Description

Maraging300 C300 Martensite Stainless Steel with High strength and elasticity


Maraging is a series of martensite stainless steel with nickel content at 18% by adding cobalt to improve the performance. This series of Stainless Steel have excellent mechanical properties, processing properties, and heat treatment properties. It is also called 18Ni300.


Production process:

The main production processes are smelting, heat processing, cold processing, welding, heat treatment and surface treatment.



Typical applications for maraging include missile and rocket motor cases, landing and takeoff gear, munitions, aerospace, extrusion tooling, die casting, high performance shafting, gears and fasteners.


Chemical composition of Maraging:

grade C Mn Si P S Ni Co Mo Ti Al Cr Cu Fe
250 ≤0.03 ≤0.10 ≤0.10 ≤0.010 ≤0.010 17-19 7.0-8.5 4.6-5.2 0.30-0.50 0.05-0.15 ≤0.50 ≤0.50 balance
300 ≤0.03 ≤0.10 ≤0.10 ≤0.010 ≤0.010 18-19 8.5-9.5 4.6-5.2 0.50-0.80 0.05-0.15 ≤0.50 ≤0.50 balance
350 ≤0.03 ≤0.10 ≤0.10 ≤0.010 ≤0.010 18-19 11.5-12.5 4.6-5.2 1.3-1.6 0.05-0.15 ≤0.50 ≤0.50 balance


Available forms

Rod,Forging,cold rolled strip, cold wire, etc

Rod diameter, 6 ~ 300mm, forged / hot rolled + turning

Plate thickness is 0.8 ~ 25mm, hot rolled / cold rolled

Wire diameter of 0.1 ~ 6mm, cold pull

Forgings are according to customer’s requirements.


Equal grades

18Ni300,Maraging 300,C300,3J33


Maraging 300 C300 Martensite Stainless Steel With High Strength Elasticity 0Maraging 300 C300 Martensite Stainless Steel With High Strength Elasticity 1Maraging 300 C300 Martensite Stainless Steel With High Strength Elasticity 2


Suzhou Xunshi New Material Co. Ltd- referred as XUNSHI hereafter, is a professional manufacturer of high-performance alloy products. XUNSHI is engaged in supplying high quality and cost-effective Superalloy, Anti-Corrosion Alloy, Precision Alloy, Special Stainless Steel and Magnetostrictive Material to customers worldwide.



· Highly experienced in alloy industry

· Top experts of industry in China

· Advanced technology and process from top famous institutes in China

· Advanced devices through whole production and inspection process

· Strict quality control system

· Company motto: best service, most value

· Smart sales policy


Service Items of XUNSHI

· Non-standard product research and pre-production

· Fabrication of products

· Cutting, splitting for sheets and plates in stock

· Heat treatment (Solution treatment, aging harden treatment, anneal, spring temper, quench etc.)

· Surface finish (peeling, gridding, polishing)

· Logistics service

· Customized packing service (also for exporting)

· Import and export (XUNSHI is certificated)

· Document translation

· Hard-to-find material sourcing


Customers of XUNSHI

Customers of XUNSHI are all over China (Taiwan and Hong Kong included). And we are exporting to USA, Canada, Italy, UK, Poland, Greece, Russia, Turkey, Iran, Israel, South Africa, South Korea, North Korea, India, Argentina, and Brazil and so on. Customers from 30+ countries trust us.


Where is XUNSHI

A- XUNSHI is in Huaqiao, Kunshan, 215332 China, which is very closed to Shanghai.

B- Xunshi is around 80KM from Shanghai Pudong International Airport (PVG).

C- 20KM from Shanghai Hongqiao Airport

D- 20KM from Shanghai Hongqiao Railway Station

E- You can contact XUNSHI sales for a pickup service.