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20MnCr5 Alloy Steel Round Bar

Carbon 0.14 - 0.19 Manganese 1 - 1.3
Silicon max 0.4 Sulfur max 0.035
Phosphorus max 0.025 Chromium 00.8 - 1.1


20MnCr5 is used for materials with a required core tensile strength of 1000 – 1300 N/mm² and just right carrying resistance as boxes, piston bolts, spindles, camshafts, gears, shafts and other mechanical controlling materials.

 

STEEL PROPERTIES

  • 20MnCr5 is used for materials with a required core tensile strength of 1000 – 1300 N/mm² and just right carrying resistance as boxes, piston bolts, spindles, camshafts, gears, shafts and other mechanical controlling materials.

 

APPLICATION

Alloyed case hardening steel for parts with a required core tensile strength of 1000 – 1300 N/mm² and good wearing resistance as boxes, piston bolts, spindles, camshafts, gears, shafts and other mechanical controlling parts.

 

PHYSICAL PROPERTIES

Thermal Conductivity at °C W / (m*K)
20 11.7
350 12.8
700 13.5

 

HEAT TREATMENT

Soft Annealing °C 750-780
Cooling Furnace
Hardness HB max. 218

 

Stress-relief Annealing °C 550-600
Cooling Furnace

 

1st pre-heating °C 2nd and 3rd Hardening °C Quenching Tempering °C Hardness after Teperature HRC
up to approx. 400 in an air-circulating furnace 740 and 840 780-820 810 °C Oil ,Quench at least twice 150-200 60 – 62