AISI 8620 Alloy Steel
8620 steel is a general nickel-molybdenum alloy steel as per AISI/ASTM American standard.It is a hardenable chromium, molybdenum, nickel low alloy steel often used for carburizing to develop a case-hardened part. This case-hardening will result in good wear characteristics.
Carbon:0.18/0.23; Silicon:0.15/0.35; Manganese:0.70/0.90;
Chromium:0.40/0.60; Molybdenum:0.15/0.25; Nickel:0.40/0.70;
W-Nr:1.6526; DIN:21NiCrMo2; JIS/KS:SNCM220;
3.Form & Size
-AISI 8620 Alloy Steel as Forged
1)Fuhongsteel manufactures and supplies AISI 8620 forged steel round bars,square bar,flat bar,shaft,and blocks.
2)SAE 8620 alloy steel size available:
(Forged flat bars,Blocks,Shafts and forging pieces can be customized)
-SAE 8620 Alloy Steel as Rolled
1)Fuhongsteel is a quality manufacturer and supplier of SAE 8620 rolled steel round bars.
2)AISI 8620 alloy steel round bar size available:
Length: 3,000-10,000mm(can be customized)
4.Tolerances on Dimension & Straightness
3)Deviation from straightness:with 360° rotary device 3mm/meter(max)
3)Non metallic inclusions
5)Ultra sonic testing 360° complete round testing as per Sep1921,A388;
SAE 8620 steel is often used in Gears, shafts and other applications where a hard carborized case and a tough core are desired.
7.AISI 8620 Steel Forging
1)Preheat 8620 steel bars uniformly and slowly;
2)Raise the forging temperature up to 1150-1200°C;
3)Keep the forging temperature above 850°C.
Hardening&Tempering(quenched and tempered and after stress relieved)
1)Heating 8620 steel uniformly to 850°C;
2)AISI 8620 alloy steel should be quenched in the oil;
3)Heat the material to the temperature 550°C;
4)Soak at this temperature for at least 2 hours;
5)Cooling SAE 8620 alloy steel in the furnace.
In case after QT a straightening process is necessary then the products should be tempered and distorsion-poor annealed with at least more than 625°C.
1)Heating SAE 8620 steel round bars thoroughly to 800-850°C;
2)Cool slowly down to the temperature 550°;
3)Complete annealing the steel in the air.
1)Heat 8620 steel up to the temperature 850°C;
2)Then cool down to the room temperature(20°C).
Enquiry for AISI 8620 Steel Round Rods,Square/Flat Bars,Rollers,Shafts and Blocks.