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 20MnCr5

CHARACTERISTICS

Medium core hardenability at the core and intermediate surface hardenability;

APPLICATIONS

Crowns and pinions, truck and tractor gears, crossheads and driveshafts;

SIMILAR MATERIALS

SAE 5120; AFNOR 20MC5; DIN 17210;

Chemical Composition (% BY WEIGHT)

C	Mn	P	S	Si	Ni	Cr	Mo	V
0,17 – 0,22	1,10 – 1,40	0,035	0,035	0,40	-	1,00 – 1,30	-	-

THERMAL TREATMENT AND PROCESSING TEMPERATURES (°C)

Forging Max.	Annealing	Standardization	Têmpera	Means of Hardening	Cementation	Tempering
1.150 - 850	830 - 850	930 - 950	780 - 860	oil	910 - 930	150 - 230

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