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 [10
3 x N/mm
2]: 210
Density [g/cm
3]: 7.83
Thermal conductivity [W/m.K]: 34.0
Electric resistivity [Ohm mm
2/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 610-650
oC, cool slowly. This will produce a maximum Brinell hardness of 229.
Hardening
Case-hardening: 880-980
oC, oil (water), warm bath at 160-250
oC.
Carburising: Salt bath at 580-650
oC, case-hardening box, air.
Direct hardening: 880-890
oC, oil, hot bath at 160-250
oC.
Core refining: 840-880
oC, oil, hot bath at 160-250
oC.
Case refining: 780-820
oC, oil, hot bath at 160-250
oC.
Normalizing
Normalizing temperature: 850 - 880
oC.
Tempering
Tempering temperature: 150 - 200
oC.
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: 1050-850
oC.
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.
