• Suzhou Xunshi New Material Co., Ltd
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Contact Person : Allen Sun
Phone Number : +86 18112628895
WhatsApp : +8618112628895

18Ni300 Martensite Stainless Steel Rod Forging Cold Rolled Strip High Strength

Place of Origin China
Brand Name XUNSHI
Certification ISO 9001:2015
Model Number 18Ni300
Minimum Order Quantity 50 kg
Price Negotiable
Packaging Details Plywood case
Delivery Time 30-35 days
Payment Terms T/T
Supply Ability 500kg per week

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WhatsApp:0086 18588475571

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Product Details
Equal Grade Maraging 300, C300 Diameter Range 6-300mm
Product Name Martensite Stainless Steel Certification ISO 9001:2015
Model 18Ni300 Forms Rod, Forging, Cold Rolled Strip, Cold Wire
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18Ni300 Martensite Stainless Steel

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Product Description

18Ni300 Martensite Stainless Steel Rod forging Cold Rolled Strip



18Ni300  is a 18% nickel, cobalt strengthened steel (C-type), with excellent mechanical properties, workability and heat treatment characteristics.

Product Name Martensite Stainless Steel
Model 18Ni300
Diameter range 6-300mm
Forms Rod, forging, cold rolled strip, cold wire
Equal grade Maraging 300,C300
Certification ISO 9001:2015




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.


Thermal treatment:

Solid solution temperature is 815~830℃, oil cold or air cold (heating time, salt bath furnace 1min/mm, air furnace 2~2.5min/mm) and the hardness is 28HRC.

The aging temperature of Maraging250 and Maraging300 steel is 480℃ and the holding time of 3h, hardness is 43HRC; holding time of 6h, hardness of 52HRC.

The limitation temperature of Maraging350 steel is 510℃, and the limitation time of 6h, hardness is 57~60HRC.


Production process:

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


Available forms

Rod,Forging, cold rolled strip, cold wire

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

Maraging 300,C300

18Ni300 Martensite Stainless Steel Rod Forging Cold Rolled Strip High Strength 018Ni300 Martensite Stainless Steel Rod Forging Cold Rolled Strip High Strength 1


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.