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Mat.No. 1.0503/S45C/G10450/AISI 1045
C45 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. Designation by Standards.
| Mat. No. | DIN | EN | AISI |
| 1.0503 | C45 | - | 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 |
Applications
Quenched and subsequently tempered steel for screws, forgings, wheel tyres, shafts, sickles, axes, knives, wood working drills, hammers, etc.
Physical properties (average values) at ambient temperature
Modulus of elasticity [103 x N/mm2]: 205
Density [g/cm3]: 7.85
Specific heat capacity[J/g.K]: 0.48
Coefficient of Linear Thermal Expansion 10-6 oC-1
| 20-100oC | 20-250oC | 20-500oC |
| 11.5 | 13.0 | 14.0 |
Soft Annealing
Heat to 680-710oC, cool slowly in furnace. This will produce a maximum Brindle hardness of 207.
Normalizing
Normalizing temperature: 840-880oC/air.
Hardening
Harden from a temperature of 820-860oC followed by water or oil quenching.
Tempering
Tempering temperature: 550-660oC/air.
Mechanical Properties in Quenched+Tempered Condition
| Diameter d (mm) | Thickness t (mm) | 0.2 % proof stress (N/mm2) | Tensile strength (N/mm2) | Elongation A5 (%) | Reduction Z (%) |
| <16 | <8 | min. 490 | 700-850 | min. 14 | min. 35 |
| <17-40 | <8<=20 | min. 430 | 650-800 | min. 16 | min. 40 |
| <41-100 | <20<=60 | min. 370 | 630-780 | min. 17 | min. 45 |
| Diameter d (mm) | Thickness t (mm) | 0.2 % proof stress (N/mm2) | Tensile strength (N/mm2) | Elongation A5(%) |
| <16 | <16 | min. 390 | min. 620 | min. 14 |
| <17-100 | <16<=100 | min. 305 | min. 305 | min. 16 |
| <101-250 | <100<250 | min. 275 | min. 560 | min. 16 |
Hot forming temperature
1050-850oC.
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 becomes available.
C45 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. Designation by Standards.
| Mat. No. | DIN | EN | AISI |
| 1.0503 | C45 | - | 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 |
Applications
Quenched and subsequently tempered steel for screws, forgings, wheel tyres, shafts, sickles, axes, knives, wood working drills, hammers, etc.
Physical properties (average values) at ambient temperature
Modulus of elasticity [103 x N/mm2]: 205
Density [g/cm3]: 7.85
Specific heat capacity[J/g.K]: 0.48
Coefficient of Linear Thermal Expansion 10-6 oC-1
| 20-100oC | 20-250oC | 20-500oC |
| 11.5 | 13.0 | 14.0 |
Soft Annealing
Heat to 680-710oC, cool slowly in furnace. This will produce a maximum Brindle hardness of 207.
Normalizing
Normalizing temperature: 840-880oC/air.
Hardening
Harden from a temperature of 820-860oC followed by water or oil quenching.
Tempering
Tempering temperature: 550-660oC/air.
Mechanical Properties in Quenched+Tempered Condition
| Diameter d (mm) | Thickness t (mm) | 0.2 % proof stress (N/mm2) | Tensile strength (N/mm2) | Elongation A5 (%) | Reduction Z (%) |
| <16 | <8 | min. 490 | 700-850 | min. 14 | min. 35 |
| <17-40 | <8<=20 | min. 430 | 650-800 | min. 16 | min. 40 |
| <41-100 | <20<=60 | min. 370 | 630-780 | min. 17 | min. 45 |
| Diameter d (mm) | Thickness t (mm) | 0.2 % proof stress (N/mm2) | Tensile strength (N/mm2) | Elongation A5(%) |
| <16 | <16 | min. 390 | min. 620 | min. 14 |
| <17-100 | <16<=100 | min. 305 | min. 305 | min. 16 |
| <101-250 | <100<250 | min. 275 | min. 560 | min. 16 |
Hot forming temperature
1050-850oC.
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 becomes available.
