Description

SAE 8620 STEEL | ROUND | CASE HARDENING STEEL.

What is SAE 8620 steel?

8620 is a low carbon nickel chromium molybdenum alloy steel with desirable carburized properties.

The nickel content material contributes to a excessive strength case longevity and above average center toughness.

Each aisi 304 stainless steel and normalized sae-aisi 8620 are iron alloys.

They have seventy two% in their common alloy composition in commonplace.

HEAT TREATMENT.

• Normalizing annealing at 864 – 901 °C
• Tempering at 155 – 200℃
• Annealing after carburization at 669 – 680℃
• The second hardening after carburization with cooling in oil or water at 810 – 831 ℃
• Carbonitriding at 863 – 930℃
• Softening annealing at 653 – 700℃

SPECIFICATION.

20hnm steel is a structural alloy Steel from a group of carbonaceous materials this is used as a semi-completed product for heavy-obligation thing, difficulty to varying loads, excessive pressures and influences, requiring excessive core electricity and hard floor.

Merchandise of this grade are provided in the form of hot rolled bars, cast bars, forgings, jewelry, and wires. 20hnma steel in line with pn-h-93028, is also used for the production of chain links.

20hnm materials are supposed for components and subassemblies of agricultural cars, motor vehicles and machinery for additives along with cogwheels, bolts, bearings, shafts running at excessive speeds, pins or disc wheels.