1: 8620 steel introductionAISI 8620 Steel is a low alloy nickel, chromium, molybdenum case hardening steel, generally supplied in the as rolled condition with a maximum hardness HB 255max. SAE steel 8620 offers high external strength and good internal strength, making it highly wear resistant. AISI 8620 steel has a higher core strength than grades 8615 and 8617.SAE 8620 alloy steel is flexible during hardening treatments, thus enabling improvement of case/core properties. Pre hardened and tempered (uncarburized) 8620 can be further surface hardened by nitriding but will not respond satisfactorily to flame or induction hardening due to its low carbon content
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2: 8620 Steel equivalent
Country |
Japan |
Germany |
Britain |
USA |
Standard |
JIS G4103 |
DIN 1654 |
BS970 |
ASTM A29 |
Grade |
SNCM220 |
21NiCrMo2/1.6523 |
805M20 |
8620 |
3: 8620 steel chemical composition
Grade |
C |
Si |
Mn |
P |
S |
Cr |
Mo |
Ni |
8620 |
0.18-0.23 |
0.15-0.35 |
0.7-0.9 |
0.035 |
0.04 |
0.4-0.6 |
0.15-0.25 |
0.4-0.7 |
1.6523 |
0.17-0.23 |
0.4 |
0.65-0.95 |
0.035 |
0.035 |
0.4-0.7 |
0.15-0.25 |
0.4-0.7 |
805M20 |
0.17-0.23 |
0.1-0.4 |
0.6-0.9 |
0.03 |
0.03 |
0.35-0.65 |
0.15-0.3 |
0.4-0.7 |
SNCM220 |
0.17-0.23 |
0.15-0.35 |
0.6-0.9 |
0.03 |
0.03 |
0.4-0.65 |
0.15-0.25 |
0.4-0.7 |
4: 8620 steel mechanical properties The mechanical properties mainly include tensile strength, yield strength, elongation, area or reduction, hardness, impact value, non-metalic inclusion etc. Different heat treatment, the mechanical properties will be different, such as normalized, tempered, QT. If you want to know the properties, kindly contact the salesman.
5: 8620 steel overviews
Size |
Round |
Dia 6-1200mm |
Plate/Flat/Block |
Thickness 6mm-500mm |
Width 20mm-1000mm |
Heat treatment |
Normalized ; Annealed ; Quenched ; Tempered |
Surface condition |
Black; Peeled; Polished; Machined; Grinded; Turned; Milled |
Delivery condition |
Forged; Hot rolled; Cold drawn |
Test |
Tensile strength, Yield strength, elongation, area of reduction, impact value, hardness, grain size, ultrasonic test, US inspection, magnetic particle testing, etc. |
Payment terms |
T/T;L/C;/Money gram/ Paypal |
Trade terms |
FOB; CIF; C&F; etc.. |
Delivery time |
30-45 days |
Application |
8620 alloy steels are used for Arbors, Bearings, Bushings, Cam Shafts, Differential Pinions, Guide Pins, King Pins, Pistons Pins, Gears, Splined Shafts, Ratchets, Sleeves and other applications where it is helpful to have a steel that can be readily machined and carburized to controlled case depths. |
6: Delivery conditionFor hot forged bar, usually the delivery condition is hot forged, annealed/QT, rough turned/Black surface.
For hot rolled bar, usually the delivery condition is hot rolled, annealed/QT, Black surface.
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