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Mat.No. 1.1191/DIN Ck45/AISI 1045

1045 is a medium carbon steel is used when greater strength and hardness are desired than in the 'as rolled' condition. Extreme size accuracy, straightness and concentric combine to minimize wear in high speed applications. Turned, ground and polished.
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  • Mat.No. 1.1191/DIN Ck45/AISI 1045

  • Osaka

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.


Designation by Standards

Mat. No.DINENAISI
1.1191Ck45C45E1045


Chemical Composition (in weight %)

CSiMnCrMoNiVWOthers
0.46max. 0.400.65max. 0.40max. 0.10max. 0.40--(Cr+Mo+Ni)=max. 0.63


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 (average 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

20-100oC20-200oC20-300oC20-400oC20-500oC20-600oC20-700oC
11.612.313.113.714.214.715.1


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)

20oC50oC100oC150oC200oC250oC300oC
56565654524945.5


Mechanical Properties vs. Diameter

DiameterTensile Strength (MPa)Yield Strength (MPa)Elongation (%)Reduction in Area (%)
cold drawn, round bar (16-22mm)6555851235
cold drawn, round bar (32-50mm)5855151030
cold drawn, round bar (50-75mm)5154851030
cold drawn, round bar (22-32mm)6205501130
cold drawn, round bar (19-32mm)6255301230
cold drawn, annealed, round bar (19-32mm)5855051245
cold drawn, high temperature, stress relieved, round bar (16-22mm)6555151545
cold drawn, high temperature, stress relieved, round bar (50-75mm)5504501235
cold drawn, high temperature, stress relieved, round bar (32-50mm)5854851540
cold drawn, high temperature, stress relieved, round bar (22-32mm)6205151540
cold drawn, low temperature, stress relieved, round bar (22-32mm)6555851130
cold drawn, low temperature, stress relieved, round bar (16-22mm)6906201235
cold drawn, low temperature, stress relieved, round bar (50-75mm)5855151025
cold drawn, low temperature, stress relieved, round bar (32-50mm)6205501030
hot rolled, round bar (19-32mm)5653101640
turned, ground and polished, round bar (19-32mm)6754052445


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.


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 it 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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