Mat.No. 1.2378, DIN X220CrVMo12-2
Designation by Standards Mat. No. DIN EN AISI 1.2378 X220CrVMo12-2 - - Chemical Composition (in weight %) C Si Mn Cr Mo Ni V W Others 2.23 0.23 0.32 12.50 0.90 - 2.15 - - Description Cold working steel. Ledeburitic chromium steel with high durability and cutting performance. Applications Tools for cutting of dynamo and transformer sheet, measuring instruments, tools for proccesing of plastics. Physical properties (avarage values) at ambient t...
Designation by Standards
Chemical Composition (in weight %)
Cold working steel. Ledeburitic chromium steel with high durability and cutting performance.
Tools for cutting of dynamo and transformer sheet, measuring instruments, tools for proccesing of plastics.
Physical properties (avarage values) at ambient temperature
Modulus of elasticity [103 x N/mm2]: 210
Density [g/cm3]: 7.63
Thermal conductivity [W/m.K]: 20.0
Electric resistivity [Ohm mm2/m]: 0.65
Specific heat capacity[J/g.K]: 0.46
Heat to 820-850oC, cool slowly in furnace. This will produce a maximum Brinell hardness of 260.
Stress relieving to remove machining stresses should be carried out by heating to 650oC, holding for one hour at heat, followed by air cooling. This operation is performed to reduce distortion during heat treatment.
Harden from a temperature of 1070-1100oC followed by air quenching or warm bath quenching 350-450oC. Hardness after quenching is 63-64 HRC.
Tempering temperature: See the data bellow.
Tempering Temperature (oC) vs. Hardness (HRC)
Hot forming temperature: 1050-900oC.
The machinability rating of OCR12V2 is roughly 25 % that of free machining carbon steel 1018. Due to its abrasion resistant nature, machining in the hardened condition should be limited to finish grinding.
The information and data presented herein are typical or average values and are not a guarantee of maximum or minimum values. Applications specifically suggested for material described herein are made solely for the purpose of illustration to enable the reader to make his own evaluation and are not intended as warranties, either express or implied, of fitness for these or other puposes. There is no representation that the recipient of this literature will receive updated editions as the become available.