Category Archives: Gearing Steel

Nitriding Steel 32crmov12-10 Tool steel

Steel Grade: DIN 32CrMoV12-10 | W-Nr 1.7765 | 32CDV12

Steel Chemical Content

Nitriding steel grades contain strong nitride formers such as molybdenum, vanadium, aluminum or chromium.

Chemical composition

Heat treatment 

Nitriding is a heat-treating process that diffuses nitrogen into the surface of a metal to create a case-hardened surface. The processes are thus similar to case-hardening but performed at a lower temperature.

The advantage with nitriding is mainly the reduced distortion behavior compared to carburizing and still give a high surface strength and ductile core.

However, since the process is performed at lower temperature, the same case depth as for carburizing will take considerable time to reach.

Nitriding can also increase the corrosion resistance of a component.

Application

Nitriding steel grades Typical applications are small gears,  crankshafts  and wear parts.

1.7147 carburized steel

1.7147 material is carburized steel (case hardening steel) with high strength and toughness and good hardenability. The quenching deformation is small, the low temperature toughness and the machinability are good, but the welding performance is low. It’s generally used after carburizing quenching or quenching and tempering.

1.7147 material equivalent steel grades:

1.7147 mechanical properties:

Yield R_p0.2 (MPa):764 (≥)

Tensile R_m (MPa):464 (≥)

Impact KV/Ku (J):43

Elongation A (%):43

Reduction Z (%):22

20MnCr5 case-hardening steel

20MnCr5 steel is case-hardening steel with low carbon content but good hardenability reaching good wear resistance due to high surface hardness after hardening. The performance obtained after heat treatment is better than 20Cr. The quenching deformation is small, the low temperature toughness is good, and the machinability is good; but the welding performance is low. Generally used after carburizing, quenching or quenching and tempering.

20MnCr5 material equivalent steel grades:

20MnCr5 mechanical properties:

Yield R_p0.2 (MPa):764 (≥)

Tensile R_m (MPa):464 (≥)

Impact KV/Ku (J):43

Elongation A (%):43

Reduction Z (%):22