Bearing SteelsAMS 5898 (Cronidur 30) Bar

A longer wearing martensitic stainless steel with greater corrosion resistance than 440C.

Cronidur 30 is a pressure-nitrided, highly corrosion-resistant martensitic cold work steel. Hardness up to 60 HRc combined with excellent toughness are some of the properties Cronidur 30 has to offer.

Combination of the PESR (Pressure Electro Slag Remelting) process with a forging or rolling technique allow a very high level of cleanliness to be achieved. Cronidur 30 offers polishability and machinability, it also retains stability after heat treatment.

It has excellent corrosion resistance and wear resistance compared to standard cold work steels as well as offering a high tempering resistance up to 500°C.

Range Enquiry

To enquire about our range or your specific requirements, please contact your local service centre.

Properties

Chemical Composition

Chemical Element	% Present
Carbon (C)	0.25 - 0.35
Chromium (Cr)	14.00 - 16.00
Manganese (Mn)	0.00 - 1.00
Silicon (Si)	0.00 - 1.00
Nickel (Ni)	0.00 - 0.50
Molybdenum (Mo)	0.85 - 1.10
Nitrogen (N)	0.30 - 0.50

Mechanical Property	Value
Tensile Strength	2150 MPa
Hardness Rockwell C	>60
Elongation A50 mm	3 %

Applications

Industry applications: Aerospace and aeronautics, medical, automotive, racing and mechanical engineering, pharmaceutical and food industries.
High precision bearings
Ball screws
Spindles
Pumps
Valves
Indsutrial knives

Characteristics

Superior corrosion resistance, higher than 1.2083, 1.4112,1.4301, 1.4571
Excellent machinability
High dimensional stability after heat treatment
Excellent grinding and polishing ability to obtain optimal surface quality
High durability by maximum hardness under static and dynamic demands
Good wear resistance, higher than 1.4034, 1.2363 or 1.4528
Tougher and secondary hardening alternative to all corrosion resistant PM-steels
High temper resistance up to 500 °C

Find your local Service Centre

Experienced multi-product specialists
In-house state of the art processing facilities
Large fleet of bespoke delivery vehicles

Disclaimer

This Data is indicative only and as such is not to be relied upon in place of the full specification. In particular, mechanical property requirements vary widely with temper, product and product dimensions. All information is based on our present knowledge and is given in good faith. No liability will be accepted by the Company in respect of any action taken by any third party in reliance thereon. Please note that the 'Datasheet Update' date shown above is no guarantee of accuracy or whether the datasheet is up to date.

The information provided in this datasheet has been drawn from various recognised sources, including EN Standards, recognised industry references (printed S online) and manufacturers' data. No guarantee is given that the information is from the latest issue of those sources or about the accuracy of those sources. Material supplied by the Company may vary significantly from this data but will conform to all relevant and applicable standards. As the products detailed may be used for a wide variety of purposes and as the Company has no control over their use; the Company specifically excludes all conditions or warranties expressed or implied by statute or otherwise as to dimensions, properties and/or fitness for any particular purpose, whether expressed or implied. Advice given by the Company to any third party is given for that party's assistance only and without liability on the part of the Company. All transactions are subject to the Company's current Conditions of Sale. The extent of the Company's liabilities to any customer is clearly set out in those Conditions; a copy of which is available on request.