Aatir Steel, a prominent manufacturer and supplier located in Cairo, Egypt, is all about crafting top-notch Alloy Steel 4140 Fasteners. These fasteners are designed to offer exceptional strength, toughness, and reliability, especially in tough industrial settings. With a reputation for precision manufacturing and a commitment to international standards, Aatir Steel guarantees that every 4140 Fastener performs consistently well, even under high stress, extreme temperatures, and heavy loads. They’re perfect for critical applications in industries like automotive, oil and gas, petrochemical, and heavy machinery, where mechanical integrity and long-lasting durability are a must. Thanks to their focus on quality and efficiency, Aatir Steel’s Alloy Steel 4140 Fasteners have earned the trust of customers across Egypt and beyond.
The Alloy Steel 4140 Fasteners from Aatir Steel are made from a blend of carbon, chromium, and molybdenum, striking the perfect balance between strength, hardness, and toughness. They boast impressive tensile strength, yield strength, and fatigue resistance, making them ideal for high-load and high-stress industrial applications. Through controlled heat treatment processes, their mechanical properties, dimensional stability, and wear resistance are enhanced, ensuring they perform reliably in challenging environments.
| Standard | ASTM A193, ASTM A194 / ASME SA193, SA194 GR, IS, BS |
| Specification | IS, BS, ASTM |
| Size | M 02 to M 160 |
| Length | UPTO 5 METERS |
| Grade | B 6, B 7/ B 7M, B 16, 2, 2HM, 2H, GR 6, B 7, B 7M |
| Type | Bolts, nuts, Washers, Anchor Fasteners, Stud Bolts, Eye Bolt, Stud, Threaded Rod, Cotter Pin, Socket Screw, Fine Fasteners & Spares, Foundation Fasteners, etc. |
| Element | AISI 4140 |
| Fe | 96.785 – 97.77 |
| Cr | 0.80 – 1.10 |
| Mn | 0.75 – 1.0 |
| C | 0.380 – 0.430 |
| Si | 0.15 – 0.30 |
| Mo | 0.15 – 0.25 |
| S | 0.040 |
| P | 0.035 |
| Grade AISI 4140 | Metric | Imperial |
| Tensile strength | 655 MPa | 95000 psi |
| Yield strength | 415 MPa | 60200 psi |
| Bulk modulus (Typical for steel) | 140 GPa | 20300 ksi |
| Shear modulus (typical for steel) | 80 GPa | 11600 ksi |
| Elastic modulus | 190-210 GPa | 27557-30458 ksi |
| Poisson’s ratio | 0.27-0.30 | 0.27-0.30 |
| Elongation at break (in 50 mm) | 25.70% | 25.70% |
| Hardness, Brinell | 197 | 197 |
| Hardness, Knoop (converted from Brinell hardness) | 219 | 219 |
| Hardness, Rockwell B (converted from Brinell hardness) | 92 | 92 |
| Hardness, Rockwell C (Converted from Brinell hardness, value below normal HRC range, for comparison purposes only.) | 13 | 13 |
| Hardness, Vickers (converted from Brinell hardness) | 207 | 207 |
| Machinability (Annealed and cold drawn. Based on 100% machinability for AISI 1212 steel.) | 65 | 65 |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
| Grade AISI 4140 | Metric | Imperial |
| Thermal expansion co-efficient (@ 0-100°C/32-212°F) | 12.2 µm/m°C | 6.78 µin/in°F |
| Thermal conductivity (100°C) | 42.6 W/mK | 296 BTU in/hr.ft².°F |
These fasteners are commonly used in the production of automotive components, heavy machinery assemblies, construction equipment, and industrial machinery that demands high strength and durability. Their outstanding mechanical properties make them a go-to choice for applications in oil and gas equipment, petrochemical plants, power generation, and structural projects, where resistance to wear, fatigue, and deformation is crucial. Aatir Steel’s 4140 Fasteners deliver dependable performance, operational safety, and long-term reliability in even the most demanding 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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