Skip to content
M50NiL from Sullivan Steel

M50NiL

M50NiL is a carburizing, low carbon, high-nickel variant of M50 bearing steel known for its core fracture toughness, rolling contact fatigue resistance, heat resistance, and high surface strength.


Melt-type(s): VIM-VAR
Other name(s): CBS-50 NiL™
Comparable grade(s): M50, 9310

STANDARDS

Type Specifications
AMS AMS 6278, AMS 2300, AMS-STD-2154
UNS K91231
EN/DIN 13MoCrNiV42-16-14, E13DCNV40
EN 1.3555

SIZES AVAILABLE

Form Size range
Bar 0.7806" - 8.000"

CHEMICAL COMPOSITION

Element Range (%)
C 0.13
Cr 4.20
Fe 86.37
Mn 0.25
Mo 4.25
Ni 3.40
Si 0.20
V 1.20

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 M50NiL are provided by one of our mills, Carpenter. Please contact Sullivan Steel for additional guidance or information.
Machinability
Sullivan Steel typically stocks M50NiL in the annealed condition, optimal for machinability and heat treatment uniformity. Exceptions may apply.
Common Applications
High-performance bearings and gears.

RESOURCES

Carpenter Data Sheet: CBS-50 NiL.pdf

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.