Steel ECN35 (Mat.No. 1.5752, DIN 14NiCr14, AISI 3310, 3415)
Designation by Standards

Brand NameRavne No.Mat. No.DINENAISI
ECN357451.575214NiCr14-3310, 3415

Chemical Composition (in weight %)

0.17max. 0.400.550.75-3.25---

Alloyed carbon steel.

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


Continuous Cooling Transformation (CCT) Diagram

Click the image to enlarge the diagram.

Time-Temperature Transformation (TTT) Diagram

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Soft Annealing
Heat to 610-650oC, cool slowly. This will produce a maximum Brinell hardness of 229.

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 temperature: 850 - 880oC.

Tempering temperature: 150 - 200oC.

Hardenability in the end-quench test

H max.48484847454442413835343433
H min.41414140383633302422222121
HH max.48484847454442413835343433
HH min.43434342403936342926262525
HL max.46464645434138373331303029
HL min.41414140383633302422222121

Hot forming temperature: 1050-850oC.

No data.

Forms manufactured: Please see the Dimensional Sales Program.

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.

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