Phehlukwayo Metal, based in Cape Town, South Africa, is your go-to source for high-strength Alloy Steel AISI 4340 bars and rods. These bars are celebrated for their remarkable toughness, fatigue resistance, and strength, making them perfect for tough engineering and industrial tasks. Phehlukwayo Metal ensures that their AISI 4340 products adhere to strict international standards, guaranteeing durability and performance even under high-stress and heavy-load situations. They cater to various industries, including aerospace, automotive, defense, and mining, providing precision-engineered alloy steel bars and rods designed to meet critical performance needs.
Alloy Steel AISI 4340 is a nickel-chromium-molybdenum steel that contains about 0.38–0.43% carbon, 0.7–0.9% chromium, 1.65–2.0% nickel, and 0.2–0.3% molybdenum. It’s well-known for its excellent hardenability, impressive tensile strength (up to 1080 MPa), and outstanding toughness, even in larger cross-sections. This steel responds beautifully to heat treatment processes like quenching and tempering, achieving high strength while maintaining ductility. AISI 4340 also boasts good fatigue and impact resistance, fair machinability in its annealed state, and can be welded effectively with the right pre- and post-weld techniques.
| Sizes | 2-100mm A/F |
|---|---|
| Tolerance | H9, H8, H10, K12, H13K9, K10, H11, H12, K11 |
| Round bar Sizes | Diameter: 3-~800mm |
| Technique | Hot Rolled, Cold Drawn, Cold Rolled, Forged, Rod |
| Processing | Bar cutting to 650mm |
| Surface | Bright, Hot Rolled Pickled, Sand Blasting Finished, Hairline, Cold Drawn, Polished suppliers |
| Condition | Hardened and tempered, annealed |
| Form | Precision Square, Ingot, T-Bar, Rod, Round, Welding Rod, I/H Bar, Flat Bar, Blocks, Rings, Rectangle, Hex (A/F), Hollow, Threaded, Profiles, Ground Bar, Channel Bar, Billet, Triangle, Round Rod, Half Round Bar, Forging etc. |
| Square bar Sizes | 4 to 100mm |
| Finish | Hot rolled annealed, Bright, smooth turned, Polish, Rough Turned, Cold (bright) drawn, centreless ground, Grinding, peeled, hot rolled, slit rolled edge, Centreless Ground & Black. |
| Flat bar Sizes | Width: 10 – 500 millimeter Thick.: 2 to 100 millimeter |
| Element | Composition |
|---|---|
| C% | 0.38/0.43 |
| Mn% | 0.60/0.80 |
| P% | 0.035 max |
| S% | 0.040 max |
| Si% | 0.20/0.35 |
| Ni% | 1.65/2.00 |
| Cr% | 0.70/0.90 |
| Mo% | 0.20/0.30 |
| Property | Value |
|---|---|
| Tensile Strength | 850-1000 N/mm 2 |
| Elongation | 13% |
| Hardness | 250-350 HB |
Alloy Steel AISI 4340 is commonly used in aerospace, automotive, and heavy machinery applications due to its excellent strength, toughness, and fatigue resistance. It's ideal for manufacturing shafts, gears, and structural components.
AISI 4340 offers high tensile strength, excellent toughness, and good wear resistance. It is known for its ability to withstand high-stress and high-impact conditions.
Yes, AISI 4340 can be heat-treated to enhance its hardness and strength, making it highly adaptable for different engineering requirements.
AISI 4340 bars and rods find extensive use in **aerospace components** such as landing gear, bolts, and fasteners, thanks to their excellent strength-to-weight ratio and fatigue resistance. In the **automotive and transport sectors**, they are utilized in drive shafts, axles, gears, and crankshafts. The **mining and heavy machinery industries** rely on 4340 for structural parts, tool holders, and load-bearing shafts that face extreme conditions. Additionally, it plays a crucial role in **defense and marine applications**, where impact resistance and strength are paramount. AISI 4340 offers a robust solution for parts that need to withstand high mechanical stress while maintaining both strength and toughness.
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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