Aiman Metals is a prominent manufacturer and exporter of high-quality metal products, offering consistent solutions to various industries globally. Among its specialized product lines, High-Speed Steel (HSS) T15 Bars are well acclaimed for their impressive hardness, wear resistance, and thermal stability. Being a tungsten–molybdenum-based alloy, T15 exhibits superior cutting efficiency and edge retention at high temperatures. These bars are especially designed for precision tooling uses where accuracy and durability are essential. Aerospace, automotive, and manufacturing industries all find T15 Bars from Aiman Metals ideal for their high-performance requirements, guaranteeing long-lasting operation, high-quality machining, and reliable solutions for demanding uses.
High-Speed Steel T15 Bars consist of around 12% Tungsten (W), 4% Chromium (Cr), 1.8% Vanadium (V), 0.5% Molybdenum (Mo), and 0.8% Carbon (C), with trace amounts of Manganese (Mn) and Silicon (Si). This well-balanced content provides T15 with its superior edge retention, wear resistance, and red-hardness. Mechanically, T15 has a Rockwell hardness of 62–66 HRC, tensile strength up to 2800 MPa, and outstanding resistance to thermal fatigue. Its sharpness and toughness at extreme machining conditions make it the best option for high-speed operations and precision cutting tools in heavy-duty industrial applications.
| 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.
High-Speed Steel T15 Bars find extensive application in industries that involve precision tooling and machining under extreme conditions. They are routinely used in the manufacture of drill bits, taps, reamers, milling cutters, and other cutting tool due to their toughness in maintaining hardness and sharpness at high speed. T15 also finds application in the fabrication of saw blades, broaches, and tooling for cold work application where toughness and heat resistance are particularly important. Owing to these superior characteristics, T15 is used extensively in aerospace, automotive, and general metalworking markets, guaranteeing increased efficiency, extended tool life, and stable performance in rigorous operations.






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Aiman Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Kuala lumpur, Malaysia
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