Aatir Steel, a reputable manufacturer and supplier based in Cairo, Egypt, specializes in high-quality Carbon Steel EN-42 Bars. These bars are well-known for their impressive strength, toughness, and wear resistance. Crafted to meet international standards, they boast consistent dimensions, a smooth surface finish, and dependable mechanical performance. Aatir Steel’s EN-42 Bars find extensive use in automotive, engineering, and industrial sectors where durability and precision are crucial. With outstanding machinability, hardenability, and fatigue resistance, these bars are perfect for components that endure heavy loads and high stress, making them a top choice for mechanical, structural, and industrial projects throughout Egypt.
Carbon Steel EN-42 Bars mainly consist of iron, featuring a carbon content of 0.38–0.45%, manganese at 0.50–0.80%, chromium ranging from 0.70–1.00%, along with trace elements of molybdenum, sulfur, and phosphorus. This blend results in remarkable tensile strength, hardness, and toughness. Typically, EN-42 Bars showcase a tensile strength of 850–1000 MPa and a yield strength of 600–750 MPa, along with good elongation and impact resistance. Their hardenability, wear resistance, and machinability make them ideal for heat treatment, forging, and precision machining, ensuring reliable long-term performance in demanding industrial and mechanical settings.
| Dimensions | EN, DIN, JIS, ASTM, BS, ASME, AISI |
| Round Bars | 3.0 – 50.8 mm, Over 50.8 – 300mm |
| Rectangular Bars | 6.35 x 12.7mm,6.35 x 25.4mm,12.7 x 25.4mm |
| Hex Bars | AF5.8mm–17mm |
| Square Bars | AF2mm – 14mm, AF6.35mm,9.5mm,12.7mm, 15.98mm,19.0mm, 25.4mm |
| Flat Bars | 1/2” to 10” in thickness range of 2mm to 150mm, |
| Finish | Bright, Polish & Black |
| Length | 1 to 6 Meters, Custom Cut Lengths |
| Form | Round, Square, Hex (A/F), Rectangle, Billet, Ingot, Forging Etc. |
Grade | Chemical composition %: | |||||||
| C | Si | Mn | S | P | Cr | Ni | Cu | |
| En42 | 0.17-0.24 | 0.17-0.37 | 0.7-1.00 | ≤0.035 | ≤0.035 | ≤0.25 | ≤0.25 | ≤0.25 |
| Chemical Composition | Application | |||||||||
| C | Si | Mn | P≤ | S≤ | CU≤ | Cr | Ni | Mo | V | |
| 0.43-0.49 | 0.15-0.35 | 0.60-0.90 | 0.03 | 0.035 | machine structural use, hand tools | |||||
| 0.53-0.59 | 0.17-0.37 | 0.50-0.80 | 0.03 | 0.03 | 0.2 | 0.25 | 0.3 | hand tools | ||
| 0.57-0.63 | 0.17-0.37 | 0.50-0.80 | 0.03 | 0.03 | 0.2 | 0.25 | 0.3 | hand tools | ||
| 0.13-0.18 | 0.15-0.35 | 0.60-0. | ||||||||
ULTIMATE TENSILE STRENGTH, S. (MPA) | 621 |
|---|---|
Modulus of elasticity, E (Gpa) | 204 |
Fatigue strength coefficient, of (Mpa) | 948 |
Fatigue strength exponent, b | -0.092 |
Fatigue ductility coeffient ,ef | 0.26 |
Fatigue ductility exponent,c | -0.445 |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
| Size Table in MM | Chucked true to Outside Dia in MM | Chucked true to Inside Dia in MM and Inch | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Outside Dia, Milimeter | Inside Dia, Milimeter | Maximum Outside Dia, Milimeter | Minimum. Inside Dia, Milimeter | Maximum Outside Dia, Inches. | Minimum. Inside Dia, Inches | Maximum Outside Dia, Milimeter | Minimum. Inside Dia, Milimeter | Maximum Outside Dia, Inches | Minimum. Inside Dia, Inches |
| 32 | 20 | 31 | 21.9 | 1.220 | 0.862 | 30 | 21 | 1.185 | 0.827 |
| 32 | 16 | 31 | 18 | 1.220 | 0.709 | 30 | 17 | 1.181 | 0.669 |
| 36 | 25 | 35 | 26.9 | 1.378 | 1.059 | 34.1 | 26 | 1.343 | 1.024 |
| 36 | 20 | 35 | 22 | 1.378 | 0.866 | 34 | 21 | 1.339 | 0.827 |
| 36 | 16 | 35 | 18.1 | 1.378 | 0.713 | 33.9 | 17 | 1.335 | 0.669 |
| 40 | 28 | 39 | 29.9 | 1.535 | 1.177 | 38.1 | 29 | 1.500 | 1.142 |
| 40 | 25 | 39 | 27 | 1.535 | 1.063 | 38 | 26 | 1.496 | 1.024 |
| 40 | 20 | 39 | 22.1 | 1.535 | 0.870 | 37.9 | 21 | 1.492 | 0.827 |
| 45 | 32 | 44 | 33.9 | 1.732 | 1.335 | 43.1 | 33 | 1.697 | 1.299 |
| 45 | 28 | 44 | 30 | 1.732 | 1.181 | 43 | 29 | 1.693 | 1.142 |
| 45 | 20 | 44 | 22.2 | 1.732 | 0.874 | 42.8 | 21 | 1.685 | 0.827 |
| 50 | 36 | 49 | 38 | 1.929 | 1.496 | 48 | 37 | 1.890 | 1.457 |
| 50 | 32 | 49 | 34.1 | 1.929 | 1.343 | 47.9 | 33 | 1.886 | 1.299 |
| 50 | 25 | 49 | 27.2 | 1.929 | 1.071 | 47.8 | 26 | 1.882 | 1.024 |
| 56 | 40 | 55 | 42 | 2.165 | 1.654 | 54 | 41 | 2.126 | 1.614 |
| 56 | 36 | 55 | 38.1 | 2.165 | 1.500 | 53.9 | 37 | 2.122 | 1.457 |
| 56 | 28 | 55 | 30.3 | 2.165 | 1.193 | 53.7 | 29 | 2.114 | 1.142 |
| 63 | 50 | 62 | 51.9 | 2.441 | 2.043 | 61.1 | 51 | 2.406 | 2.008 |
| 63 | 45 | 62 | 47 | 2.441 | 1.850 | 61 | 46 | 2.402 | 1.811 |
| 63 | 40 | 62 | 42.2 | 2.441 | 1.661 | 60.8 | 41 | 2.394 | 1.614 |
| 63 | 36 | 62 | 38.3 | 2.441 | 1.508 | 60.7 | 37 | 2.390 | 1.457 |
| 63 | 32 | 62 | 34.4 | 2.441 | 1.354 | 60.6 | 33 | 2.386 | 1.299 |
| 71 | 56 | 69.9 | 58 | 2.752 | 2.283 | 68.9 | 57 | 2.713 | 2.244 |
| 71 | 45 | 69.9 | 47.3 | 2.752 | 1.862 | 68.6 | 46 | 2.701 | 1.811 |
| 71 | 40 | 69.9 | 42.4 | 2.752 | 1.669 | 68.5 | 41 | 2.697 | 1.614 |
| 71 | 36 | 69.9 | 38.5 | 2.752 | 1.516 | 68.4 | 37 | 2.693 | 1.457 |
| 75 | 60 | 73.8 | 62 | 2.906 | 2.441 | 72.8 | 61 | 2.866 | 2.402 |
| 75 | 50 | 73.8 | 52.2 | 2.906 | 2.055 | 72.6 | 51 | 2.858 | 2.008 |
| 75 | 40 | 73.8 | 42.5 | 2.906 | 1.673 | 72.3 | 41 | 2.846 | 1.614 |
| 80 | 63 | 78.8 | 65 | 3.102 | 2.559 | 77.8 | 64 | 3.063 | 2.520 |
| 80 | 50 | 78.8 | 52.4 | 3.102 | 2.053 | 77.4 | 51 | 3.047 | 2.008 |
| 80 | 45 | 78.8 | 47.5 | 3.102 | 1.870 | 77.3 | 46 | 3.043 | 1.811 |
| 80 | 40 | 78.8 | 42.6 | 3.102 | 1.677 | 77.2 | 41 | 3.039 | 1.614 |
| 85 | 67 | 83.7 | 69.1 | 3.295 | 2.720 | 82.6 | 68 | 3.252 | 2.677 |
| 85 | 55 | 83.7 | 57.4 | 3.295 | 2.260 | 82.3 | 56.0 | 3.240 | 2.205 |
| 85 | 45 | 83.7 | 47.6 | 3.295 | 1.874 | 82.1 | 46.0 | 3.232 | 1.811 |
| 90 | 71 | 88.6 | 73.1 | 3.488 | 2.878 | 87.6 | 72.1 | 3.449 | 2.839 |
Aatir Steel’s Carbon Steel EN-42 Bars are extensively utilized in the automotive, mechanical, and engineering fields. They are perfect for crafting gears, shafts, studs, axles, crankshafts, and other heavy-duty machinery components that require exceptional strength and wear resistance. These bars are also employed in structural and precision engineering applications that face high loads and repetitive mechanical stress. Thanks to their machinability, toughness, and hardenability, they excel in forging, machining, and fabrication processes. EN-42 Bars from Aatir Steel deliver long-lasting, reliable performance, making them a trusted choice for various industrial applications.
Aatir Steel is a leading manufacturer, supplier and exporter of high-quality Carbon Steel, Alloy Steel, Mild Steel and Galvanized Steel products. Our extensive product range includes Pipes, Tubes, Flanges, Pipe Fittings, Forged Fittings, Sheets and Plates, catering to various industries in Cairo, Egypt.
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