Manila, Philippines-based Isis Metals is a prominent industrial metal products manufacturer and supplier of superior quality. Known for its high-precision engineering and strict adherence to excellence, the company provides a wide variety of materials suitable to suit different industries’ requirements. Its high-quality offerings include High-Speed Steel (HSS) T4 Bars, which are admired for their high strength, long life, and superior wear resistance. These bars work effectively in challenging machining and manufacturing processes that need precision and stability. With utmost dedication to customer satisfaction and reliable service, Isis Metals has remained to serve industries like engineering, automotive, and tool-making.
High-Speed Steel (HSS) T4 Bars are made up mainly of 18–22% Tungsten, 4–5% Chromium, and 1–2% Molybdenum, with trace elements like 1.75–2.25% Vanadium, 0.70–0.80% Carbon, and 0.30–0.50% Manganese. The optimized composition provides high hardness, wear resistance, and thermal stability, enabling the bars to work well at high temperatures. T4 steel is found to attain a Rockwell hardness of approximately 62–64 HRC and demonstrates good toughness and impact resistance. Such properties render it best suited for manufacturing high-performance cutting and machining tools that resist severe industrial conditions and remain dimensionally accurate while in continuous use.
| ASTM A600 | C | Mn | P | S | Si | Cr | V | W | Mo | Co | ||||||||
| T4 | 0.70 | 0.80 | 0.10 | 0.40 | 0.03 | 0.03 | 0.20 | 0.40 | 3.75 | 4.50 | 0.80 | 1.20 | 17.50 | 19.00 | 0.40 | 1.00 | 4.25 | 5.75 |
| DIN ISO 4957 | C | Mn | P | S | Si | Cr | V | W | Mo | Co | ||||||||
| S 18-1-2-5/1.3255 | 0.75 | 0.83 | … | 0.40 | 0.03 | 0.03 | … | 0.45 | 3.80 | 4.50 | 0.80 | 1.20 | 17.50 | 18.50 | 0.50 | 0.80 | 4.50 | 5.50 |
| JIS G4403 | C | Mn | P | S | Si | Cr | V | W | Mo | Co | ||||||||
| SKH3 | 0.73 | 0.83 | … | 0.40 | 0.03 | 0.03 | … | 0.45 | 3.80 | 4.50 | 0.80 | 1.20 | 17.00 | 19.00 | … | … | 4.50 | 5.50 |
| Density [g/cm3] | 8.70 | |
| Properties | Metric | Imperial |
| Modulus of elasticity | 190-210 GPa | 27557-30458 ksi |
| Poisson’s ratio | 0.27-0.30 | 0.27-0.30 |
| Country | USA | German | Japan |
| Standard | ASTM A600 | DIN EN ISO 4957 | JIS G4403 |
| Grades | T4/T12004 | S 18-1-2-5/1.3255 | SKH3 |
| Properties | Metric | Imperial |
| Thermal expansion co-efficient | 11.9 µm/m°C | 6.6 µin/in°F |
High Speed Steel T4 bars are sized by diameter and length, typically ranging from 1/4" to 10" in diameter, with standard lengths of 12 to 20 feet, depending on manufacturer specifications.
High Speed Steel T4 bars and rods are manufactured through alloying, melting, forging, and heat treatment processes, followed by precision machining to achieve desired hardness, strength, and dimensional accuracy for industrial use.
HSS T4 Bars are extensively used for the manufacture of cutting tools with high precision like drill bits, milling cutters, reamers, taps, and tool bits due to their exceptional hardness and wear resistance. They can retain cutting performance and edge sharpness at elevated temperatures, which makes them suitable for cutting hard materials including steel and alloys. In addition to cutting tools, T4 bars are applied in the manufacturing, automotive, and aerospace industries for the manufacture of dies, punches, and molds requiring exceptional strength and wear resistance. Their high toughness and resistance to heat render them a requirement in high-performance metalworking, forming, and machining applications.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Isis Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Manila, Philippines
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