Designation by Standards
| Brand Name |
Ravne No. |
Mat. No. |
DIN |
EN |
AISI |
| BRCMO |
882 |
1.3243 |
S6-5-2-5 |
HS6-5-2-5 |
M35 |
Chemical Composition (in weight %)
| C |
Si |
Mn |
Cr |
Mo |
Ni |
V |
W |
Others |
| 0.91 |
max. 0.45 |
max. 0.40 |
4.15 |
- |
1.90 |
6.30 |
- |
Co: 4.75 |
Description
M35 is molybdenum high speed steel. Very high resistance to wear and to softening at elevated temperatures. High resistance of cutting edge and good toughness. Deep hardening response. High hot hardness.
Applications
Highly stressed drills, milling cutters, profile cutting tools, thread cutting drills and cold forming tools.
Physical properties (avarage values) at ambient temperature
Modulus of elasticity [10
3 x N/mm
2]: 217
Density [g/cm
3]: 8.1
Thermal conductivity [W/m.K]: 19.0
Electric resistivity [Ohm mm
2/m]: 0.60
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 |
20-600oC |
20-700oC |
| 9.7 |
10.5 |
11.0 |
11.4 |
11.5 |
12.0 |
12.5 |
Soft Annealing
Heat to 820-880
oC, cool slowly in furnace. This will produce a maximum Brinell hardness of 230-300.
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 to 450-600
oC, preheat to 850
oC and then to 1050
oC. Harden from a temperature of 1210-1250
oC followed by oil, air quenching or warm bath 550
oC. Hardness after quenching is 64-66 HRC.
Transformation temperatures: Ac
1=824
oC , Ac
3=853
oC.
Tempering
Tempering temperature: 3 x 1 hour at 540-570
oC.
Tempering Temperature (oC) vs. Hardness (HRC)
| 200oC |
300oC |
400oC |
500oC |
525oC |
550oC |
575oC |
600oC |
650oC |
700oC |
| 63 |
61 |
62 |
64 |
64.5 |
65 |
64 |
63 |
55 |
46 |
Tempering Diagram
Click the image to enlarge the diagram.
Forging
Hot forming temperature: 1100-900
oC.
Machinability
No data.
Corrosion Resistance
Not normally employed in applications requiring corrosion resistance.
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.
