Can 8620 be thru hardened?
8620 can be hardened to 1500° F followed by water quench. Carburize at 1650° – 1700° F in an appropriate carburizing medium and oil quench to harden. Tempering of carburized parts is done at 250° – 300° F and will result in the alloy having a core strength of approximately 135,000 psi minimum.
How do you anneal 8620 alloy steel?
Annealing. AISI 8620 may be given a full anneal at 1550 F and slow cooling at not more than 50 F per hour down to 850 F. From there it may be air cooled.
What is carburizing hardening?
Carburizing is a case hardening process in which carbon diffuses into the surface layer of a steel part at a temperature high enough to change the steel grain structure. This change enables the steel to absorb carbon.
Does carburizing change size?
It is virtually impossible to have a workpiece undergo carburization without having some dimensional changes. The amount of these changes varies based on the type of material that is used, the carburizing process that the material undergoes and the original size and shape of the work piece.
What can I weld 8620 with?
The chemical composition of the AISI Type 8620 compares with AWS 5.5 E8010-P1 weld rod (which is used for pipelines). Another choice of weld rod would be AWS 5.5 E10018M for the AISI Type 8620 base metal.
What should the temperature be for carburizing 8620 steel?
Typical heat treatment for carburizing of 8620 alloy steel: AISI: Normalize: Carburizing temperature, °C (°F) Cooling method: Tempering temperature, °C (°F) 8620 steel: Should be at least as high as the carburizing temperature followed by air cooling: 900-925 (1650-1700) Quench in Oil: 120-175 (250-350) Note:
What kind of hardness does 8620 steel have?
Brinell hardness: 179-235 HB. Effect of mass on oil quenched hardness (HRC) of low-alloy 8620 steel of various diam bar. Optional (For partial stress relief and improved resistance to cracking from grinding operations.) 8620 material usually do not require a full anneal.
What is the hardness of case hardening steel?
8620 is a low nickel – chromium – molybdenum medium hardenability, case hardening (carburizing) steel, generally supplied in the as rolled condition with a maximum brinell hardness of 280 (Rc30).Characterised by good core strength and toughness in small to medium sections with case hardness up to Rc62 when carburized, hardened and tempered.8620 can
Which is the equivalent material for AISI 8620?
SAE AISI 8620 Equivalent Material SAE AISI 8620 material equivalent to European EN (Germany DIN, British BSI, French NF…), ISO, Japanese JIS and Chinese GB standard (For reference). Related material: 5160 Steel, SAE AISI 1080 Steel, AISI 1018 Steel, AISI 1045 Steel, AISI 1020 Steel, SAE AISI 52100 Steel