Dang Steel, a reputable manufacturer and supplier located in Da Nang, Vietnam, specializes in high-quality Alloy Steel 4140 Fasteners that are built for reliability and top-notch performance in various industrial settings. These fasteners are celebrated for their durability, strength, and wear resistance, making them a go-to choice in the engineering, construction, and manufacturing sectors. With state-of-the-art production facilities and rigorous quality control, Dang Steel guarantees that their fasteners meet international standards. Their Alloy Steel 4140 Fasteners come in a range of sizes, shapes, and finishes, making them perfect for critical applications where strength, precision, and long-lasting performance are a must.
These fasteners are primarily made from a blend of chromium, molybdenum, and manganese, with carbon adding to their hardness and tensile strength. This unique combination provides outstanding toughness, fatigue resistance, and abrasion resistance, ensuring they hold up well under high stress. Mechanically, they boast high tensile strength, excellent yield strength, and remarkable impact resistance, even in elevated temperatures. Plus, they are easy to machine, which adds to their versatility across various industrial applications while keeping dimensional accuracy and structural integrity intact.
| 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 |
Alloy Steel 4140 Fasteners find extensive use in sectors like power generation, oil and gas, petrochemicals, and heavy engineering. Their impressive strength and stress resistance make them perfect for machinery, automotive assemblies, pressure vessels, and structural components. In construction, they provide secure connections under both dynamic and static loads. The aerospace and defense industries trust these fasteners for their ability to endure harsh conditions. Additionally, their wear resistance and toughness make them ideal for mining equipment, shipbuilding, and other critical operations where safety, reliability, and longevity are essential for demanding projects.
Dang 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 Da Nang, Vietnam.
Copyright 2025 Dang Steel. All rights reserved
