14NiCr14

Steel ECN35 (Mat.No. 1.5752, DIN 14NiCr14, AISI 3310, 3415)
	Designation by Standards Brand Name Ravne No. Mat. No. DIN EN AISI ECN35 745 1.5752 14NiCr14 - 3310, 3415 Chemical Composition (in weight %) C Si Mn Cr Mo Ni V W Others 0.17 max. 0.40 0.55 0.75 - 3.25 - - - Description Alloyed carbon steel. Applications Components with large cross section requiring high toughness and core strength, e.g., gears, gear shafts, crankshafts. Physical properties (avarage values) at ambient temperature Modulus of elasticity [103 x N/mm2]: 210 Density [g/cm3]: 7.83 Thermal conductivity [W/m.K]: 34.0 Electric resistivity [Ohm mm2/m]: 0.20 Specific heat capacity[J/g.K]: 0.46 Coefficient of Linear Thermal Expansion 10-6 oC-1 20-100oC 20-200oC 20-300oC 20-400oC 20-500oC 11.1 12.1 12.9 13.5 13.9 Continuous Cooling Transformation (CCT) Diagram Click the image to enlarge the diagram. Time-Temperature Transformation (TTT) Diagram Click the image to enlarge the diagram. Soft Annealing Heat to 610-650oC, cool slowly. This will produce a maximum Brinell hardness of 229. Hardening Case-hardening: 880-980oC, oil (water), warm bath at 160-250oC. Carburising: Salt bath at 580-650oC, case-hardening box, air. Direct hardening: 880-890oC, oil, hot bath at 160-250oC. Core refining: 840-880oC, oil, hot bath at 160-250oC. Case refining: 780-820oC, oil, hot bath at 160-250oC. Normalizing Normalizing temperature: 850 - 880oC. Tempering Tempering temperature: 150 - 200oC. Hardenability in the end-quench test Hardness 1.5 3 5 7 9 11 13 15 20 25 30 35 40 H max. 48 48 48 47 45 44 42 41 38 35 34 34 33 H min. 41 41 41 40 38 36 33 30 24 22 22 21 21 HH max. 48 48 48 47 45 44 42 41 38 35 34 34 33 HH min. 43 43 43 42 40 39 36 34 29 26 26 25 25 HL max. 46 46 46 45 43 41 38 37 33 31 30 30 29 HL min. 41 41 41 40 38 36 33 30 24 22 22 21 21 Forging Hot forming temperature: 1050-850oC. Machinability No data. 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 2011 by Metal Ravne. All rights reserved. Contact our Sales Office for more information.