Neil Metals, based in Kolkata, India, stands out as a leading manufacturer and supplier of High Speed Steel T4 Bars, specifically designed to meet the rigorous demands of the tool and die industries. Known for their precision, durability, and compliance with international standards, Neil Metals offers T4 grade HSS bars that excel in hardness, wear resistance, and heat resistance. These bars are perfect for crafting cutting tools used in high-speed machining. With cutting-edge facilities and a skilled technical team, Neil Metals guarantees consistent quality, timely deliveries, and exceptional performance for clients both in India and around the globe.
High Speed Steel T4 Bars are tungsten-based tool steels primarily made up of Carbon (approximately 0.75–0.85%), Tungsten (17.5–18.5%), Chromium (3.5–4.5%), Vanadium (around 1%), and Molybdenum (about 1.2%). The high tungsten content gives these bars remarkable hot hardness and resistance to abrasion. T4 bars maintain their cutting edge strength even at temperatures exceeding 600°C and provide excellent toughness and wear resistance. They can be hardened through heat treatment, ensuring they perform well even in challenging cutting and forming tasks, making them ideal for long tool life and continuous production settings.
| 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 are widely utilized in the production of high-performance cutting tools, including drills, end mills, broaches, reamers, and taps. These bars are particularly suited for machining hard materials at high speeds without sacrificing hardness due to heat. In industries like automotive, aerospace, and heavy engineering, T4 bars are favored for their ability to sustain cutting efficiency over extended use. They are also employed in cold forming tools, punches, and high-precision components where high wear resistance, red hardness, and toughness are essential for reliable operation and tool longevity.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Neil Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Kolkata, India
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