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Mat.No. 1.1191, DIN Ck45, AISI 1045
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Designation by Standards Mat. No. DIN EN AISI 1.1191 Ck45 C45E 1045 Chemical Composition (in weight %) C Si Mn Cr Mo Ni V W Others 0.46 max. 0.40 0.65 max. 0.40 max. 0.10 max. 0.40 - - (Cr+Mo+Ni)=max. 0.63 Description 1045 is a medium carbon steel is used when greater strength and hardness is desired than in the “as rolled” condition. Extreme size accuracy, straightness and concentricity combine to minimize wear in high speed appl...
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Designation by Standards
| Mat. No. | DIN | EN | AISI |
| 1.1191 | Ck45 | C45E | 1045 |
Chemical Composition (in weight %)
| C | Si | Mn | Cr | Mo | Ni | V | W | Others |
| 0.46 | max. 0.40 | 0.65 | max. 0.40 | max. 0.10 | max. 0.40 | - | - | (Cr+Mo+Ni)=max. 0.63 |
Description 1045 is a medium carbon steel is used when greater strength and hardness is desired than in the “as rolled” condition. Extreme size accuracy, straightness and concentricity combine to minimize wear in high speed applications. Turned, ground and polished. Applications Component parts for vechiles, shafts, bushings, crankshafts, connecting rods and parts for the machine building industry and steel for axes, knives, hammers, etc. Physical properties (avarage values) at ambient temperature Modulus of elasticity [103 x N/mm2]: 190-210 Density [g/cm3]: 7.84 Thermal conductivity [W/m.K]: 15.1 Coefficient of Linear Thermal Expansion 10-6 oC-1
| 20-100oC | 20-200oC | 20-300oC | 20-400oC | 20-500oC | 20-600oC | 20-700oC |
| 11.6 | 12.3 | 13.1 | 13.7 | 14.2 | 14.7 | 15.1 |
Continuous Cooling Transformation (CCT) Diagram
Click the image to enlarge the diagram. Soft Annealing Heat to 650-700oC, cool slowly. This will produce a maximum Brinell hardness of 207. Hardening Harden from a temperature of 820-850oC, 830-860oC followed by water or oil quenching. Normalizing Normalizing temperature (oC): 840-870oC. Tempering Tempering temperature: See the data bellow. Tempering Temperature (oC) vs. Hardness (HRC)
| 20oC | 50oC | 100oC | 150oC | 200oC | 250oC | 300oC |
| 56 | 56 | 56 | 54 | 52 | 49 | 45.5 |
Tempering Diagram
Click the image to enlarge the diagram. Mechanical Properties vs. Diameter
| Diameter | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | Reduction in Area (%) |
| cold drawn, round bar (16-22 mm) | 655 | 585 | 12 | 35 |
| cold drawn, round bar (32-50 mm) | 585 | 515 | 10 | 30 |
| cold drawn, round bar (50-75 mm) | 515 | 485 | 10 | 30 |
| cold drawn, round bar (22-32 mm) | 620 | 550 | 11 | 30 |
| cold drawn, round bar (19-32 mm) | 625 | 530 | 12 | 30 |
| cold drawn, annealed, round bar (19-32 mm) | 585 | 505 | 12 | 45 |
| cold drawn, high temperature, stress relieved, round bar (16-22 mm) | 655 | 515 | 15 | 45 |
| cold drawn, high temperature, stress relieved, round bar (50-75 mm) | 550 | 450 | 12 | 35 |
| cold drawn, high temperature, stress relieved, round bar (32-50 mm) | 585 | 485 | 15 | 40 |
| cold drawn, high temperature, stress relieved, round bar (22-32 mm) | 620 | 515 | 15 | 40 |
| cold drawn, low temperature, stress relieved, round bar (22-32 mm) | 655 | 585 | 11 | 30 |
| cold drawn, low temperature, stress relieved, round bar (16-22 mm) | 690 | 620 | 12 | 35 |
| cold drawn, low temperature, stress relieved, round bar (50-75 mm) | 585 | 515 | 10 | 25 |
| cold drawn, low temperature, stress relieved, round bar (32-50 mm) | 620 | 550 | 10 | 30 |
| hot rolled, round bar (19-32 mm) | 565 | 310 | 16 | 40 |
| turned, ground and polished, round bar (19-32 mm) | 675 | 405 | 24 | 45 |
Forging Hot forming temperature: 1050-850oC. Machinability Machinability is good, rated at 80% that of the AISI 1112 alloy used as a 100% machining rated steel. 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 2015 by Metal Ravne. All rights reserved. Contact our Sales Office for more information.
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