Designation by Standards
| Brand Name |
Ravne No. |
Mat. No. |
DIN |
EN |
AISI |
| OCR12 |
812 |
1.2080 |
X210Cr12 |
- |
D3 |
Chemical Composition (in weight %)
| C |
Si |
Mn |
Cr |
Mo |
Ni |
V |
W |
Others |
| 2.05 |
0.25 |
0.30 |
11.50 |
- |
- |
- |
- |
- |
Description
D3 is an oil hardening, high carbon/chromium type tool steel with very high wear resistance. It hardens with a very slight change in size. The alloy possesses very high compressive strength and is deep hardening.
Applications
Cutting tools, stamping, woodworking, drawing, deep drawing and pressing tools, cold working rolls, measuring tools.
Physical properties (avarage values) at ambient temperature
Modulus of elasticity [10
3 x N/mm
2]: 210
Density [g/cm
3]: 7.67
Thermal conductivity [W/m.K]: 20.0
Electric resistivity [Ohm mm
2/m]: 0.65
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 |
| 11.7 |
12.0 |
12.4 |
12.9 |
13.3 |
13.6 |
14.0 |
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 800-840
oC, cool slowly. This will produce a maximum Brinell hardness of 250. To secure uniform softness.
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
Harden from a temperature of 940-980
oC followed by oil quenching or warm bath
approx. 400
oC. Hardness after quenching is 64-66 HRC.
For small parts up to thickness 30 mm. Harden from a temperature of 960-100
oC followed by air, comompressed air quenching. Hardness after quenching is 63-65 HRC.
Tempering
Tempering temperature: 150-400
oC.
Tempering Temperature (oC) vs. Hardness (HRC)
| 100oC |
200oC |
300oC |
400oC |
500oC |
600oC |
| 64 |
62 |
60 |
57 |
53 |
42 |
Tempering Diagram
Click the image to enlarge the diagram.
Forging
Hot forming temperature: 1050-850
oC.
Machinability
The machinability rating of D3 is roughly 25 % that of free machining carbon steel 1018. Due to its abrasion resistant nature, machining in the hardened condition should be limited to finish grinding.
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.
