Sadiki Metals, located in Kinshasa, Congo, stands out as a top manufacturer and supplier of high-quality metal products, particularly Alloy Steel AISI 4140 Bars and Rods. Known for their dedication to excellence, the company provides durable and dependable steel solutions tailored for a wide range of industrial uses. Thanks to their advanced manufacturing techniques and rigorous quality control measures, Sadiki Metals guarantees that every bar and rod adheres to international standards. Their offerings cater to both local and regional markets, supplying engineers, fabricators, and manufacturers with premium materials that blend strength, toughness, and versatility, making them suitable for both heavy-duty and precision engineering tasks.
Alloy Steel AISI 4140 Bars and Rods primarily consist of 0.38–0.43% carbon, 0.75–1.00% chromium, 0.15–0.25% molybdenum, and 0.80–1.10% manganese, along with trace amounts of silicon and sulfur. This alloy strikes a remarkable balance between strength, hardness, and toughness. When heat-treated, it enhances its mechanical properties, achieving a tensile strength of 95,000–100,000 psi and a yield strength of 60,000–65,000 psi. With impressive fatigue resistance, wear resistance, and hardenability, AISI 4140 consistently performs well under high-stress and demanding conditions, making it a versatile option for various engineering and industrial applications.
| Dimensions | : | EN, DIN, JIS, ASTM, BS, ASME, AISI |
| Size | : | 5 mm To 500 mm |
| Diameter | : | 0.1 mm to 100 mm |
| Length | : | 100 mm To 3000 mm Long & Above |
| Finish | : | Black, Bright Polished, Rough Turned, NO.4 Finish, Matt Finish, BA Finish |
| Tolerance | : | H8, H9, H10, H11, H12, H13K9, K10, K11, K12 or as per clients’ requirements |
| Form | : | Round, Square, Hex (A/F), Rectangle, Billet, Ingot, Forging Etc. |
| Grade | C | Mn | Si | P | S | Fe | Mo | Ni | Cr |
| AISI / SAE 4140 | 0.38-0.43 | 0.75-1.00 | 0.20-0.35 | 0.035 max | 0.035 MAX | – | – | 0.15-0,25 | 0.80-1.10 |
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 7.85 g/cm3 | 1432 ℃ | 560 | 460 | 21.50% |
Alloy Steel AISI 4140 Bars and Rods are known for their excellent strength, toughness, and wear resistance. With a chemical composition that includes chromium and molybdenum, they offer improved hardness, fatigue resistance, and good machinability, making them ideal for demanding applications.
AISI 4140 Bars and Rods are commonly used in automotive, aerospace, oil and gas, construction, and heavy machinery industries. They are ideal for manufacturing parts such as gears, shafts, crankshafts, and axles that require high strength and durability.
Yes, Alloy Steel AISI 4140 Bars and Rods can be heat treated to achieve desired mechanical properties. Heat treatment processes such as quenching and tempering can increase hardness, strength, and toughness, making the material suitable for high-stress applications.
| STANDARD | WERKSTOFF NR. | UNS | JIS | BS | EN |
| AISI / SAE 4140 | 1.7225 | G41400 | SCM 440 | BS 708M40 | 1.7223 |
The versatility of Alloy Steel AISI 4140 Bars and Rods has led to their widespread use across numerous industries, thanks to their exceptional strength, toughness, and wear resistance. They are perfect for crafting shafts, gears, bolts, and other components that endure high stress. In the automotive and aerospace industries, they are frequently utilized for crankshafts, spindles, and connecting rods. Moreover, AISI 4140 bars play a crucial role in construction, heavy machinery, and oilfield applications, where reliability under extreme loads is essential. Their capacity to endure heat treatment and machining makes them a favored choice among manufacturers.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Sadiki Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Kinshasa, Congo
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