Designation by Standards
| Brand Name |
Ravne No. |
Mat. No. |
DIN |
EN |
AISI |
| RAVNE23 |
269 |
1.3344 |
S5-5-3 |
- |
M3:2 |
Chemical Composition (in weight %)
| C |
Si |
Mn |
Cr |
Mo |
Ni |
V |
W |
Others |
| 1.25 |
max. 0.70 |
max. 0.50 |
4.15 |
5.00 |
max. 0.50 |
2.95 |
6.30 |
Co: 1.0 |
Description
Molybdenum powder metallurgical (PM) high speed tool steel produced by gas atomization, hot isostatic pressing and plastic deformation. Very high resistance to wear and to softening. High compression strength. Deep hardening response and much better toughness than conventional high speed tool steel. Very good dimensional stability at hardening.
Applications
Milling cutters, broach needles, cutting and punching, tools, dies, working rolls for cluster rolling stand.
Physical properties (avarage values) at ambient temperature
Density [g/cm
3]: 8.06
Thermal conductivity [W/m.K]: 24.0
Thermal conductivity [W/m.K] at 400
oC: 28.0
Thermal conductivity [W/m.K] at 600
oC: 27.0
Coefficient of Linear Thermal Expansion 10-6 oC-1
| 20-100oC |
20-200oC |
20-300oC |
20-400oC |
20-500oC |
20-600oC |
20-700oC |
20-800oC |
| 10.3 |
11.3 |
11.4 |
11.7 |
12.0 |
12.3 |
12.5 |
12.8 |
Continuous Cooling Transformation (CCT) Diagram
Click the image to enlarge the diagram.
Soft Annealing
Heat to 850-990
oC, cool slowly. This will produce a maximum Brinell hardness of 240-300.
Stress Relieving
Stress relieving to remove machining stresses should be carried out by heating to
650
oC, holding for one hour at heat, followed by air cooling. This operation is performed to reduce distortion during heat treatment.
Hardening
Heat up to 450-500
oC, then preheat to 850-900
oC. Harden from a temperature of 1140-1180
oC followed by inert gas quenching or warm bath 550
oC. Hardness after quenching is min. 64 HRC.
Tempering
Tempering temperature: Min. 3 x 1.5 hour at 560
oC.
Hardening Temperature (oC) vs. Hardness (HRC)
| 1000oC |
1040oC |
1080oC |
1120oC |
1140oC |
1160oC |
1180oC |
| 57 |
59 |
61 |
63 |
64 |
65 |
65.5 |
Tempering Diagram
Click the image to enlarge the diagram.
Forging
Hot forming temperature: No data.
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.
