Phehlukwayo Metal, based in Cape Town, South Africa, specializes in providing top-notch Alloy Steel AISI 4145 bars that are perfect for high-performance and heavy-duty tasks. These bars are celebrated for their remarkable toughness, strength, and resistance to fatigue, making them a great fit for tough environments like oil & gas, mining, and heavy machinery. Phehlukwayo Metal guarantees that its AISI 4145 bars adhere to rigorous international standards, ensuring reliable mechanical properties, precise dimensions, and consistent quality. With a commitment to performance, timely delivery, and expert service, the company plays a vital role in supporting essential industrial operations with trustworthy alloy steel solutions.
Alloy Steel AISI 4145 is a low-alloy chromium-molybdenum steel that contains about 0.43–0.48% carbon, 0.75–1.20% chromium, and 0.15–0.25% molybdenum. It boasts excellent hardenability, high tensile strength (typically ranging from 850 to 1000 MPa), and outstanding impact and fatigue resistance. This steel is particularly well-suited for quenching and tempering, maintaining its toughness even in heavy-section components. AISI 4145 also offers good machinability and fair weldability, especially when proper preheat and post-weld heat treatments are applied. Its ability to withstand extreme mechanical stress makes it an ideal choice for critical load-bearing applications.
| Dimensions: | ASTM, ASME, DIN, BS, EN, IS, AMS, JIS, IBR & Other International Standards. |
|---|---|
| Standard: | ASTM A689, JIS G4801, DIN 17221, GB/T 18254, ASTM A295, JIS G4805, etc. |
| Alloy Steel AISI 4145 Round Bars Range: | Range – 3.17mm to 350mm dia |
| Alloy Steel AISI 4145 Round Bars Diameter: | 5mm-500mm (Customized size is acceptable) |
| Alloy Steel AISI 4145 Round Bars Length: | 1m-9m or according to the customer’s requirement |
| Type: | Round bar, rod, square bar, flat bar, hexagon bar, angle bar, channel bar, threaded bar |
| Alloy Steel AISI 4145 Round Bars Technique: | Forged/Hot Rolled/Cold Drawn/Peeled |
| Alloy Steel AISI 4145 Round Bars Surface: | bright round bar, pickled round bar, black round bar |
| Package Details: | Standard seaworthy package(wooden boxes package,pvc package, or other package) |
| Export Area: | USA, UAE, Europe, Asia, Middle East, Africa, South America |
| Grade | AISI 4145 | |
|---|---|---|
| Min. | Max | |
| C | 0.43 | 0.49 |
| Cr | 0.80 | 1.10 |
| Si | 0.15 | 0.35 |
| S | – | 0.040 |
| Mn | 0.85 | 1.10 |
| P | – | 0.035 |
| Mo | 0.15 | 0.25 |
| Grade: | AISI 4145 |
|---|---|
| Tensile Strength (ksi) min : | 140 |
| Elongation (% in 50mm) min: | 14 |
| Yield Strength 0.2% Proof (ksi) min: | 120 |
| Hardness: | – |
AISI 4145 Bars and Rods offer high strength, toughness, and wear resistance, making them ideal for heavy-duty applications.
Yes, they can be heat treated to enhance hardness, strength, and overall performance.
These bars and rods are commonly used in the automotive, oil and gas, and heavy machinery industries for parts like gears, shafts, and axles.
| Standard: | AISI 4145 |
|---|---|
| WERKSTOFF NR. | – |
| UNS | G41450 |
AISI 4145 bars find extensive use in the **oil and gas industry** for crafting drill collars, drill string components, and tool joints, thanks to their toughness and resistance to stress cracking. In **heavy machinery and mining**, they are utilized in shafts, gears, and lifting equipment that face high mechanical loads. The **aerospace and power generation sectors** also rely on AISI 4145 for high-strength structural components. Its unique blend of strength, toughness, and fatigue resistance makes it a go-to material for **critical, high-load applications** that require long-lasting reliability and performance.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Phehlukwayo Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Cape Town, South Africa
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