STEEL BARS

CASE-HARDENING STEEL

Commonly used to enrich the surface carbon content of steel that case hardening provides. This is intended to produce a high-hardness, wear-resistant surface supported by a tenacious core.

Steel 8620

CHARACTERISTICS

Used in medium sections that require intermediate hardenability, mechanical strength, and shock resistance.

APPLICATIONS

Worm screws and steering sectors, camshafts, secondary shafts, gears for trucks, crossheads, crowns, pinions, and crankshafts. It is also used in the manufacture of cemented bearings.

SIMILAR MATERIALS

COPANT 8620; SAE 8620; AISI 8620; UNS G86200; DIN 20NiCrMo2-2 (1.6523); AFNOR 20 NC 2; JIS SNCM 220;

WEIGHT CALCULATOR

Chemical Composition (% BY WEIGHT)

C	Mn	P	S	Si	Ni	Cr	Mo	V
0,18 – 0,23	0,70 – 0,90	0,030	0,040	0,15 – 0,35	0,40 - 0,70	0,40 -0,60	0,15 – 0,25

THERMAL TREATMENT AND PROCESSING TEMPERATURES (°C)

Forjamento Máx.	Annealing	Standardization	Hardening	Means of Hardening	Cementation	Tempering
1.100 - 850	855 - 885	870 - 955	845 - 870	oil	900 - 925	200 - 230

DOWNLOAD TABLES

FINISHED BARS TOLERANCE AS PER NBR 8647

ROUND BARS DIMENSION AND TOLERANCES ROLLED STEEL

FORGED BARS TOLERANCE: ALLOWANCE (mm) DIN 7527 and MANUFACTURERS’ Standards