Brian Fasteners, based in Houston, USA, provides High Speed Steel T15 Bars known for their wear resistance and red hardness. Ideal for heavy-duty cutting tools, T15 is manufactured through powder metallurgy and hot extrusion for fine-grain consistency. The company guarantees precise dimensions and excellent metallurgical quality. T15 is used for broaches, reamers, and taps in demanding industrial applications. With custom sizes, quick delivery, and expert support, Brian Fasteners supplies T15 bars for robust tool production that requires high wear resistance and edge retention under heat.
HSS T15 contains about 0.8% carbon, 18% tungsten, 5% chromium, 1% vanadium, 10 to 12% cobalt, and 4% molybdenum. After hardening, tensile strength reaches 2,500 to 3,000 MPa and hardness reaches 68 HRC. The red hardness endurance up to 600 °C is impressive, and cobalt improves thermal stability and wear resistance, supporting a long tool life.
| ASTM A600 | C | Si | Mn | Cr | Mo | P | S | V | W | Co |
| T15 | 1.50~1.60 | 0.15~0.40 | 0.15~0.40 | 3.75~5.00 | ≤1.00 | ≤0.030 | ≤0.030 | 4.50~5.25 | 11.75~13.0 | 4.75~5.25 |
| DIN W-Nr | C | Si | Mn | Cr | Mo | P | S | V | W | Co |
| 1.3202 | 1.30~1.45 | ≤0.45 | ≤0.40 | 3.80~4.50 | 0.70~1.00 | ≤0.030 | ≤0.030 | 3.50~4.00 | 11.50~12.50 | 4.50~5.00 |
| GB/T | C | Si | Mn | Cr | Mo | P | S | V | W | Co |
| W12Cr4V5Co5 | 1.50~1.60 | 0.15~0.40 | 0.15~0.40 | 3.75~5.00 | <1.00 | ≤0.030 | ≤0.030 | 4.50~5.25 | 11.75~13.00 | 4.75~5.25 |
| BS | C | Si | Mn | Cr | Mo | P | S | V | W | Co |
| BT15 | 1.40~1.60 | ≤0.40 | ≤0.40 | 4.25~5.00 | ≤1.00 | ≤0.030 | ≤0.030 | 4.75~5.25 | 12.0~13.0 | 4.50~5.50 |
| JIS | C | Si | Mn | Cr | Mo | P | S | V | W | Co |
| SKH10 | 1.45~1.60 | ≤0.45 | ≤0.40 | 3.80~4.50 | – | ≤0.030 | ≤0.030 | 4.20~5.20 | 11.50~13.50 | 4.20~5.20 |
| Density | 0.296 lb/in3 (8193 kg/m3) |
| Modulus Of Elasticity | 30 x 106 psi (207 GPa) |
| Machinability | 40-45% of a 1% carbon steel |
| Specific Gravity | 8.19 |
| AISI/ASTM | Werkstoff | EN/DIN | BS | JIS/KS |
| T15 | 1.3202 | S12-1-4-5 | BT15 | SKH10 |
| Annealing | Preheat | Austenitizing | Quench | Tempering |
| Temp °F | Temp °F | Temp °F | Medium | Temp °F |
| 1550/1600 | 1500/1550 | 2200/2250 | Salt/Oil/Atm | 1025/1050 |
High-Speed Steel T15 bars are sized by their diameter and length, typically ranging from small diameters for precision tools to larger sizes for heavy-duty applications, tailored to customer specifications.
Yes, High-Speed Steel T15 bars are recyclable. They can be melted down and repurposed into new products, making them an environmentally friendly option for sustainable manufacturing and reducing material waste.
High-speed Steel T15 bars should be stored in a dry, cool environment, away from moisture and extreme temperatures. They should be kept on racks or pallets to prevent rust and damage.
T15 bars are perfect for manufacturing taps, reamers, broaches, milling cutters, and drills used in heavy machining. Their heat resistance and wear life are suitable for automotive and die-making applications. When precision and edge endurance are essential, T15 surpasses conventional HSS. Brian Fasteners supports toolmakers with high-quality T15 bars to create tools capable of demanding high-temperature operations with minimal wear.






We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
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