UNIT I • São Paulo • MATRIZ • +55 11 2632 0277 • comercial1@trefita.com.br
UNIT II • São Paulo • +55 11 2795 2555 • comercial2@trefita.com.br
UNIT III • MG • Belo Horizonte • +55 31 3555 5555 • comercial3@trefita.com.br
UNIT IV • SC • Araquari • +55 47 3511 4242 • comercial2@trefita.com.br
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STEEL BARS

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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 hardenability in the core and intermediate hardenability on the surface;

APPLICATIONS

Crowns and pinions, gears for trucks and tractors, crossheads and secondary trees;

SIMILAR MATERIALS

SAE 5120; AFNOR 20MC5; DIN 17210;

WEIGHT CALCULATOR

Chemical Composition (% BY WEIGHT)

CMnPSSiNiCrMoV
0,17 – 0,221,10 – 1,400,0350,0350,40 1,00 – 1,30

THERMAL TREATMENT AND PROCESSING TEMPERATURES (°C)

Forjamento Máx.AnnealingStandardizationHardeningMeans ofHardeningCementationTempering
1.150 - 850830 - 850930 - 950780 - 860oil910 - 930150 - 230

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FINISHED BARS TOLERANCE AS PER NBR 8647
ROUND BARS DIMENSION AND TOLERANCES ROLLED STEEL
FORGED BARS TOLERANCE: ALLOWANCE (mm) DIN 7527 and MANUFACTURERS’ Standards

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Phone +55 11 2632 0277
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UNIDADE 4 . Araquari, Santa Catarina, Brazil
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