Carbon Steel Bar
Related specifications
AS1442 - 1045
JIS G4051 - S45C
BS 970: En8D/43B
JIS G4051 - S45C
BS 970: En8D/43B
Chemical Composition (% by weight - nominal values)
| Grade | C | Mn | Si | P | S |
| 1045 | 0.45 | 0.7 | 0.2 | 0.02 | 0.02 |
Grade 1045 is a fully killed medium carbon steel supplied in the as-rolled condition or normalised (subject to diameter). The tensile strength is not guaranteed, but is typically in the range of 550 - 700 MPa.
Applications
The steel machines readily and is ideal for applications including:
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Axles
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Bolts
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Hydraulic rams
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Pins
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Rolls
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Shafts
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Sprockets
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Machined parts requiring better strengths than mild steel.
The steel is also well suited to induction and flame hardening.
Dimensional Tolerances
The following tolerance apply to bar supplied to AS 1442. Similar but not identical tolerances apply for other related specifications.
| Nominal diameter (mm) | Diameter Tolerance (mm) | Out-of-square Tolerance (mm) | |
| Up to 25 | ±0.25 | 0.40 | |
| Over 25 to 30 | ±0.30 | 0.45 | |
| Over 30 to 40 | ±0.40 | 0.60 | |
| Over 40 to 50 | ±0.50 | 0.75 | |
| Over 50 to 60 | ±0.60 | 0.90 | |
| Over 60 to 70 | ±0.70 |
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