Bearing SteelsAMS 6490/6491 (M50)

A bearing steel suitable for use within the missile and bearing industry.

M50 is a premium-melted alloy. It offers excellent resistance to multi-axial stresses and good resistance to oxidation. The product is refined using vacuum-induction melting (VIM) and vacuum-arc remelting (VAR) processes.

It possesses high compressive strength suitable for a high speed steel tool. It also has a high degree of cleanliness therefore can be finished to a high lustre.

M50 is a bearing steel suitable for use within the missile and bearing industry, offering high wear resistance and strength at elevated temperatures. Bearings within aircrafts and gas turbines are other typical applications of this alloy.

M50 could also be used in tooling applications where high levels of performance are required.

Range Enquiry

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

Related Specifications

AMS 6490
AMS 6491
ASTM A600 (M 50)
ASTM A600 (M50)
DIN 1.3551

Properties

Chemical Composition

Chemical Element	% Present
Carbon (C)	0.00 - 0.85
Manganese (Mn)	0.00 - 0.30
Silicon (Si)	0.00 - 0.20
Molybdenum (Mo)	0.00 - 4.25
Vanadium (V)	0.00 - 1.00
Chromium (Cr)	0.00 - 4.10
Iron (Fe)	Balance

Physical Property	Value
Density	7.87 g/cm³
Melting Point	86-203 °C

Applications

Aircraft engine bearings
Helicopter rotor bearings
Gas turbines (requiring hot hardness)
High performance racing engines
Tooling applications

Characteristics

Exhibits excellent resistance to multi-axial stresses and softening at high service temperatures as well as good resistance to oxidation
Characteristic of a high-speed tool steel, it possesses high compressive strength
Due to the alloy’s high degree of cleanliness, parts are capable of being finished to a high lustre
Used in a wide variety of applications for components which require high wear resistance and strength at elevated temperatures

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.