Mat.No. 1.2436, DIN X210CrW12
Designation by Standards Mat. No. DIN EN AISI 1.2436 X210CrW12 X210CrW121 - Chemical Composition (in weight %) C Si Mn Cr Mo Ni V W Others 2.12 0.25 0.45 12.00 - - - 0.70 - Description Ledeburitic chromium steel with high durability and cutting performance; low distortion on hardening. Applications Cutting tools for sheet metal thicknesses up to approximately 2 mm, paper blades,stone compression moulds, section rolling-mill rolls, deep-drawin...
Designation by Standards
Chemical Composition (in weight %)
Ledeburitic chromium steel with high durability and cutting performance; low distortion on hardening.
Cutting tools for sheet metal thicknesses up to approximately 2 mm, paper blades,stone compression moulds, section rolling-mill rolls, deep-drawing tools.
Physical properties (avarage values) at ambient temperature
Modulus of elasticity [103 x N/mm2]: 210
Density [g/cm3]: 7.77
Thermal conductivity [W/m.K]: 20.0, 20.5 (at 350oC), 24.1 (at 700oC)
Electric resistivity [Ohm mm2/m]: 0.65
Specific heat capacity[J/g.K]: 0.46
Coefficient of Linear Thermal Expansion 10-6 oC-1
Continuous Cooling Transformation (CCT) Diagram
Time-Temperature Transformation (TTT) Diagram
Heat to 800-840oC, cool slowly in furnace. This will produce a maximum Brinell hardness of 255.
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 940-980oC followed by air,oil quenching or warm bath quenching 500-550oC. Hardness after quenching is 64 HRC.
Tempering temperature: See the data bellow.
Tempering Temperature (oC) vs. Hardness (HRC)
Hot forming temperature: 1050-850oC.
The machinability rating of OCR12SP is roughly 20-25% 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.