High Hardenability AISI 8620 Steel Sheet Plate, DIN 1.6523

8620 steel has high hardenability without temper brittleness. It is also called
DIN 1.6523 and JIS SNCM220 steel. It also has good weldability, little tendency
to form cold cracks, and good machinability and cold strain plasticity. It is
used to make gears, shafting, bolting, springs, hand tools and etc.

8620 Steel Application
AISI 8620 alloy steel is mainly used as a material for impact and wear
resistant parts such as automobile bearings, camshafts, etc. In the carburized
state it is used for gears, ring gears, shafts and crankshafts.It can also be
used for the claws and cone bodies of the roller cone bits for oil drilling and
metallurgical open-pit mines, and to manufacture the forgings of the connecting
rod valve section of the steam turbine gear whole rotor internal combustion
engine.

1.6523 Steel Characteristics
1.It is a low alloy nickel, chromium, molybdenum case hardening steel.
2.It has good external and internal strength, so there with high wear-
resistant.
3.It is usually used to make many medium-strength tools.

8620 Steel Round Bar Sheet Plate Heat Treatment and Produced
Annealing
It may be given a full anneal by heat to 820℃ – 850℃, and hold until
temperature is uniform throughout the section and cool in the furnace or air
cooled.

Tempering
Tempering of heat treated and water quenched parts of it (not carburized) is
done at 400 F to 1300 F to improve case toughness with minimal effect on its
hardness. This will also reduce the possibility of grinding cracks.

Hardening
It will be austenitized at around 840°C – 870°C, and oil or water quenched
depending upon section size and intricacy. And cool it in Air or oil required.

Normalizing
1675ºF (910ºC) and air cool. This is another method of improving machinability
in 8620 steel material; normalizing might also be used prior to the case
hardening.

Heat Treatment
This alloy may be hardened by heating to 1500 F followed by a water quench.
Carburize at 1650 to 1700 F in an appropriate carburizing medium and oil quench
to harden. Improved carburized case and core properties can be obtained by
furnace cooling from carburizing at 1650 – 1700 F and then reheating to 1575
F.

AISI 8620 Steel Round Bar Plate Sheet Supply
We have our own cutting and processing equipment. Specifications can be cut and
customized according to your requirements.

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Minimum Order: 1 kilograms

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