Mat.No. 1.0503, S45C, G10450,AISI 1045
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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 Description C45 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 applicat...
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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 |
Description C45 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 Quenched and subsequently tempered steel for screws, forgings, wheel tyres, shafts, sickles, axes, knives, wood working drills, hammers, etc. Physical properties (avarage 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 Brinell 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 |
Mechanical Properties in Normalized Condition
| 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 |
Diagram Tempering Temperature – Mechanical Properties
Forging Hot forming temperature: 1050-850oC. Machinability No data. 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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