Mat.No. 1.1141, DIN Ck15, AISI 1015

Designation by Standards

Chemical Composition (in weight %)

Description CK15 is a plain carbon steel with a nominal 0.15% carbon content. It is a relatively low strength steel but it may be quenched and tempered for increased strength. Applications Low stressed components for automobile industry and general mechanical engineering – cranks, spindles, cartridges, pins, bushings, bolts, shafts, etc.  Physical properties (avarage values) at ambient temperature Modulus of elasticity [10³ x N/mm²]: 210  Density [g/cm³]: 7.85 Thermal conductivity [W/m.K]: 59.0  Electric resistivity [Ohm mm²/m]: 0.11 Specific heat capacity[J/g.K]: 0.46 Coefficient of Linear Thermal Expansion 10^-6 oC^-1

Soft Annealing Heat to 650-700^oC, cool slowly. Normalizing Normalizing temperature: 890-920^oC. Carburizing Carburizing temperature: 880-980^oC. Cooling from carburizing temperature: water, oil, air, thermal bath. Core hardening temperature: 880-920^oC. Tempering Tempering temperature: 150-180^oC. Hardenability Diagram Forging Hot forming temperature: 1050-850^oC.  Machinability Machinability of CK15 steel is fairly good, especially in the cold drawn or cold worked condition. Based upon carbon steel AISI 1112 as a reference that is considered 100% machinable (easily machined) the CK15 steel has a rating of 55%. Disclaimer 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.