Rupal Metals is a reliable manufacturer and supplier in Delhi, India, providing excellent High Speed Steel T4 Bars. Having extensive industry experience, the organization is renowned for providing sound tool steel solutions that guarantee the highest performance levels. Rupal Metals’ T4 grade bars find use due to their high hardness, resistance to wear, and durability at high-speed machining operations. With clients from the automotive, aerospace, and engineering industries, Rupal Metals adheres to precision manufacturing, prompt delivery, and customer satisfaction. Their products are specifically designed to sustain tough industrial use with reliable performance and extended service life.
High Speed Steel T4 Bars consist of essential alloying components like tungsten (around 18%), chromium (4%), vanadium (1.3%), molybdenum, and carbon (about 0.75%). This particular chemical makeup provides the steel with exceptional red hardness and wear resistance. T4 steel possesses high compressive strength and up to a hardness level of 65 HRC with proper heat treatment. Its mechanical properties allow it to sustain cutting performance under intense thermal and mechanical stresses, which makes it suitable for rigorous machining operations where accuracy and endurance are paramount.
| 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.
High-speed steel T4 bars should be stored in a dry, clean environment, protected from moisture and corrosion. Store them on flat, secure surfaces to prevent deformation or damage.
High Speed Steel T4 Bars find extensive application in the manufacturing of cutting tools like drills, taps, reamers, milling cutters, and saw blades. Due to their hardness retention and cutting efficiency at high temperatures, they are the best choice for high-speed machining of ferrous and non-ferrous materials. Automotive, aerospace, die-making, and heavy engineering industries utilize T4 bars for tools requiring enduring sharpness and high dimensional precision. Rupal Metals supplies these bars with precision and uniform quality specifications, enabling manufacturers to achieve maximum performance and operational reliability.






We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Rupal Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Delhi, India
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