Skip to content
Close
SEARCH
CONTACT
PHONE: +1 (609) 882-5250
Request a Quote
PHONE: +1 (609) 882-5250
Request a Quote
Short Lead Times
Expect fast responses, rapid turnarounds, and on-time delivery.
TECHNICAL SUPPORT
Get support from purchase through product development.
Inventory Management
Partner with us to store your high-value input material.
In-House Sawing
Avoid wear on your machines and order parts cut to length.
Tubing
Find the ideal steel tube for your finished part size.
Freight Handling
Ship collect, FOB destination, or drop ship for additional processing.
aerospace_mega_menu_opt
Aerospace & Defense
Flight-critical components in highly specialized aeronautical and space applications
EXPLORE
medical_mega_menu_opt
Medical
Instruments, tooling, and mechanical applications in corrosive environments
EXPLORE
motorports_mega_menu_opt
Motorsports
High-performance power transmission, power generation, and drivetrain parts
EXPLORE
industrial_mega_menu_opt
Industrial
Critical machinery and related components in oil and gas, food processing, and more
EXPLORE
M50 from Sullivan Steel

M50

M50 is a premium high-performance, high-temperature bearing steel with excellent resistance to multi-axial stress, compressive stress, and oxidation.


Melt-type(s): VAR, VIM-VAR
Other name(s): M-50
Comparable grade(s): Nitriding 135M™

STANDARDS

Type Specifications
AMS AMS 6490, AMS 6491, AMS 2300, AMS-STD-2154
UNS T11350
EN/DIN 80MoCrV42-16
EN 1.3551, 1.3552

SIZES AVAILABLE

Form Size range
Bar 0.200" - 8.000"
Wire 0.185" - 0.354"

CHEMICAL COMPOSITION

Element Range (%)
C 0.77 - 0.85
Cr 3.75 - 4.25
Co 0.25 max
Cu 0.10 max
Fe 87.40
Mn 0.35 max
Mo 4.0 - 4.5
Ni 0.15 max
P 0.02 max
S 0.02 max
Si 0.75 max
W 0.25 max
V 0.90 - 1.10

CHARACTERISTICS

High temperature Stainless Through-hardened Nitriding Carburizing Induction

CHARACTERISTICS

Characteristic Value
High temperature
Stainless
Through-hardened
Nitriding
Carburizing
Induction

ADDITIONAL INFO

Heat Treatment
Heat treatment instructions and recommendations for M50 are provided by one of our mills, Carpenter. Please contact Sullivan Steel for additional guidance or information.
Machinability
Sullivan Steel typically stocks M50 in the spheroidized annealed condition, optimal for machinability and heat treatment uniformity. Exceptions may apply.
Common Applications
Aircraft engine bearings, helicopter rotor bearings, gas turbines, high-performance racing engines, various tools.

RESOURCES

Carpenter Data Sheet: Data Sheet 

Universal Data Sheet: M50 Tool Steel

DISCLAIMER

The product information provided on this page is provided for general reference only and is not complete. Customers and prospective customers should rely on the applicable material certifications for product information, including any exceptions to specifications, if applicable. Material certifications are available upon request. All product sales are subject to Sullivan Steel’s standard terms and conditions of sale.