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18Ni300 Martensite Stainless Steel Rod Forging Cold Rolled Strip

Place of Origin China
Brand Name XUNSHI
Certification ISO 9001:2015
Model Number 18Ni300
Minimum Order Quantity 50
Price Negotiable
Packaging Details Plywood case
Delivery Time 30-35 days
Payment Terms T/T
Supply Ability 500kg per week
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 018Ni300 Martensite Stainless Steel Rod Forging Cold Rolled Strip 1