Mat.No. 1.1178, DIN Ck30, AISI 1030

Designation by Standards

Chemical Composition (in weight %)

Description This is a higher carbon (0.30%) manganese steel in the plain carbon steel alloy family. It provides greater strength than the lower carbon grades while still retaining reasonable ductility. Applications CK30 steel is generally used in the quenched and tempered condition for strength. Applications include machinery parts where strength and hardness are requisites.  Physical properties (avarage values) at ambient temperature Modulus of elasticity [10³ x N/mm²]: 200  Density [g/cm³]: 7.85 Thermal conductivity [W/m.K]: 51.2  Specific heat capacity[J/g.K]: 0.486 Soft Annealing A full anneal is accomplished at 870 to 980^oC followed by slow cooling in the furnace. A stress relief anneal may be done at 540^oC. Hardening Heat treat at 810 to 870^oC and water quench, followed by a tempering treatment. Tempering Temper, after heat treat and quench, at 320 to 540^oC depending upon strength level desired.  Forging Hot forming temperature: 1050-850^oC.  Machinabilty Machinabilty of CK30 steel is rated at 70 % that of the AISI 1112 steel considered to be 100% machinable as a reference.  Corrosion Resistance  This is a plain carbon steel and will rust unless protected. Welding  CK30 steel may be welded by all methods. In heavy sections it is advisable to pre-heat at 150 to 260^oC and post-heat at 540 to 650^oC for welding. Cold working  Cold working of CK30 steel in the annealed condition may be don by conventional methods. A full or stress relief anneal may be needed after cold working. Forms manufactured: Please see the Dimensional Sales Program.  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. Unless otherwise specified, registered trademarks are property of Metal Ravne company. Copyright 2015 by Metal Ravne. All rights reserved. Contact our Sales Office for more information.