What’s the chemical composition of 8620? Now let us show the 8620 chemical composition.
8620 / 8620H is a low Nickel Chromium Molybdenum case hardening (carburizing) steel. Can Be supplied in “H” condition with controlled hardenability. Strict analytical limits provide controlled response from heat to heat, making it an ideal selection for production case hardened parts, where consistency in heat treatment is required. Typical core strength up to Rc41 Carburised, hardened and tempered.

8620 chemical compositionSAE 8620 Steel Specification and Relevant Standards
Country USA DIN BS BS Japan
Standard ASTM A29 DIN 1654 EN 10084 BS 970 JIS G4103
Grades 8620 1.6523/
21NiCrMo2		 1.6523/
20NiCrMo2-2		 805M20 SNCM220

 

ASTM 8620 Steels Equilvalents 8620 chemical composition
Standard Grade C Mn P S Si Ni Cr
ASTM A29 8620 0.18-0.23 0.7-0.9 0.035 0.04 0.15-0.35 0.4-0.7 0.4-0.6
DIN 1654 1.6523/ 0.17-0.23 0.65-0.95 0.035 0.035 ≦0.40 0.4-0.7 0.4-0.7
21NiCrMo2
EN 10084 1.6523/ 0.17-0.23 0.65-0.95 0.025 0.035 ≦0.40 0.4-0.7 0.35-0.70
20NiCrMo2-2
JIS G4103 SNCM220 0.17-0.23 0.6-0.9 0.03 0.03 0.15-0.35 0.4-0.7 0.4-0.65
BS 970 805M20 0.17-0.23 0.6-0.95 0.04 0.05 0.1-0.4 0.35-0.75 0.35-0.65

 

APPLICATIONS

This grade finds wide application in the automotive industry and for ring gears, pinions, racks and worms, helical gears, bearing races, pins and high tensile chains.