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Steel CT198
Short Description:
Designation by Standards Brand Name Ravne No. Mat. No. DIN EN AISI CT198 198 - - - - Chemical Composition (in weight %) C Si Mn Cr Mo Ni V W Others 0.25 0.25 0.60 1.35 0.20 2.95 - - max. Cu = 0.15 DescriptionSpecial structural steel. ApplicationsHighly stressed, case hardened dies for artificial resin, of low deforming. Physical properties (avarage values) at ambient temperatureModulus of elasticity [103 x N/mm2]: 210 Density [g/cm3]: 7.80 Soft AnnealingHeat to...
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Designation by Standards
| Brand Name | Ravne No. | Mat. No. | DIN | EN | AISI |
| CT198 | 198 | - | - | - | - |
Chemical Composition (in weight %)
| C | Si | Mn | Cr | Mo | Ni | V | W | Others |
| 0.25 | 0.25 | 0.60 | 1.35 | 0.20 | 2.95 | - | - | max. Cu = 0.15 |
Description
Special structural steel.
Applications
Highly stressed, case hardened dies for artificial resin, of low deforming.
Physical properties (avarage values) at ambient temperature
Modulus of elasticity [103 x N/mm2]: 210
Density [g/cm3]: 7.80
Soft Annealing
Heat to 680-700oC, cool slowly. This will produce a maximum Brinell hardness of 260.
Normalization
Temperature: 900oC, air.
Hardening
Harden from a temperature of 840-870oC followed by oil or air quenching.
Tempering
Tempering temperature: Please see the data bellow.
Tempering Diagram
Click the image to enlarge the diagram.
Mechanical Properties vs. Temperature
| Temperature | 0.2 % proof stress (N/mm2) | Tensile strength (N/mm2) | Elongation (%) | Reduction of area (%) | Notch impact energy (ISO-V) (J) |
| 100oC | 1650 | 1720 | 10.5 | 51.0 | 60 |
| 150oC | 1630 | 1680 | 11.5 | 54.0 | 63 |
| 200oC | 1610 | 1650 | 10.5 | 53.0 | 60 |
| 250oC | 1430 | 1520 | 11.5 | 56.0 | 53 |
| 300oC | 1420 | 1480 | 11.0 | 58.0 | 48.0 |
| 350oC | 1370 | 1420 | 10.0 | 58.0 | 52.0 |
| 400oC | 1295 | 1350 | 10.5 | 58.0 | 56.0 |
| 450oC | 1235 | 1280 | 11.0 | 59.0 | 62.0 |
| 500oC | 1120 | 1180 | 12.0 | 60.0 | 84.0 |
| 550oC | 955 | 1040 | 14.0 | 64.0 | 112.0 |
| 600oC | 835 | 940 | 15.5 | 64.0 | 124.0 |
Forging
Hot forming temperature: 1050-850oC.
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.
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