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8620 from Sullivan Steel

8620

8620 is a carburizing and case-hardening low alloy steel created for applications requiring high fatigue strength, toughness, and wear resistance.


Melt-type(s): Air-melt
Other name(s): N/A
Comparable grade(s): N/A

STANDARDS

Type Specifications
AMS AMS 6274
ASTM ASTM A534, ASTM A304, ASTM A322, ASTM A255, ASTM A519
UNS G86200
EN/DIN 20NiCrMo2, 20NiCrMoS2, 20NiCrMo2-2, 21NiCrMo2, 21NiCrMo22
EN 1.6522, 1.6523, 1.6526, 1.6543, 1.6523

SIZES AVAILABLE

Form Size range
Bar 0.500" - 6.00"
Tube 1.772" - 10.500"

CHEMICAL COMPOSITION

Element Range (%)
C 0.18 - 0.23
Cr 0.40 - 0.60
Fe 96.90 - 98.02
Mn 0.70 - 0.90
Mo 0.15 - 0.25
Ni 0.40 - 0.70
P 0.04 max
S 0.04 max
Si 0.15 - 0.35

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 8620 are provided by one of our mills, Ovako. Please contact Sullivan Steel for additional guidance or information.
Machinability
Sullivan Steel typically stocks 8620 in the mill-annealed condition, optimal for machinability and heat treatment uniformity. Exceptions may apply. In most cases, machining should be completed at the closest possible tolerance prior to carburizing. It is generally ideal to minimize finish machining or grinding after heat treatment to avoid jeopardizing the hardened case of the part.
Common Applications
Engines and other automotive components, camshafts, crankshafts, fasteners, gears, gear rings, kingpins, piston pins.

RESOURCES

Ovako Data Sheet: 20NiCrMo2-2

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.