SIRAPID 3344 PM Steel
Designation by Standards
Brand Name | Ravne | Mat. No. | DIN | EN | AISI/SAE |
SIRAPID 3344 PM | RAVNE23 PM | 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 (average values) at ambient temperature
Density [g/cm3]: 8.06
Thermal conductivity [W/m.K]: 24.0
Thermal conductivity [W/m.K] at 400oC: 28.0 Thermal conductivity [W/m.K] at 600oC: 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
Soft Annealing
Heat to 850-990oC, 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 650oC, holding for one hour at heat, followed by air cooling. This operation is performed to reduce distortion during heat treatment.
Hardening
Heat up to 450-500oC, then preheat to 850-900oC. Harden from a temperature of 1140-1180oC followed by inert gas quenching or warm bath 550oC. Hardness after quenching is min. 64 HRC.
Tempering
Tempering temperature: Min. 3 x 1.5 hour at 560oC.
Hardening Temperature (oC) vs. Hardness (HRC)
1000oC | 1040oC | 1080oC | 1120oC | 1140oC | 1160oC | 1180oC |
57 | 59 | 61 | 63 | 64 | 65 | 65.5 |
Tempering 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 purposes. 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 SIJ Metal Ravne company. Copyright 2016 by SIJ Metal Ravne d.o.o. All rights reserved. Contact our Sales Office for more information.
