Semih Metals, a reputable manufacturer and supplier based in Istanbul, Turkey, has earned a solid reputation for providing top-notch High Speed Steel T15 Bars to industries around the globe. With a strong focus on precision engineering, durability, and adherence to international quality standards, the company guarantees that its products can handle the rigorous demands of modern manufacturing. These High Speed Steel T15 Bars are expertly crafted to deliver outstanding wear resistance, edge retention, and performance, especially in high-speed cutting scenarios. By blending innovation with advanced metallurgy and dependable service, Semih Metals has positioned itself as a trusted partner for industries in need of premium-grade tool steels for critical machining tasks.
High Speed Steel T15 Bars are high-performance tool steels enriched with tungsten, featuring about 12% tungsten, 4% chromium, 5% cobalt, 1% vanadium, and 1.5% carbon in their composition. This unique blend provides them with remarkable hot hardness, wear resistance, and toughness, making them perfect for extreme cutting environments. With tensile strength surpassing 1,300 MPa and hardness levels exceeding 65 HRC after heat treatment, they maintain sharp cutting edges even under high-speed and high-temperature conditions. Their exceptional resistance to thermal softening and deformation guarantees a long service life, making High Speed Steel T15 Bars reliable choices for crafting precision tools and advanced machining equipment.
| 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.
These bars are widely utilized in industries that demand durable and high-performance cutting tools. They’re commonly found in the production of drills, milling cutters, taps, reamers, gear cutters, and broaches, where outstanding edge retention and hardness are essential. Sectors like aerospace, automotive, and heavy engineering depend on these bars for machining tough alloys and high-strength materials. Additionally, they find applications in cold working tools, saw blades, and form tools that operate under extreme thermal and mechanical stresses. Thanks to their superior hardness, wear resistance, and thermal stability, High Speed Steel T15 Bars are truly indispensable in the world of precision machining.






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