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High Speed Tool Steel T1 | SKH2 | 1.3355 | Products
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Looking for reliable T1 Tool Steel for your next project?
At SteelPro Group, we offer top-quality T1 in various forms and sizes, ready to meet your specific needs. With our fast delivery and competitive pricing, you can trust us to provide the materials you need, when you need them.
What Is T1 Tool Steel?
T1 Tool Steel is an 18% tungsten-based high-speed steel (HSS) known for its hardness, wear resistance, and toughness. It is air- or oil-hardened, with high cutting performance, red hardness, and tensile strength (63-66 HRC after heat treatment). T1 is widely used in cutting tools, such as drills and reamers, and for machining high-strength steels, tough alloys, and abrasive materials. While it offers good weldability and fair machinability, it is less formable than other steels.
T1 Tool Steel Equivalents
| Standard | GB/T 9943 | ASTM A600 | JIS G4403 | DIN EN ISO 4957 | BS 4659 |
| Grades | W18Cr4V | T1 | SKH2 | HS18-0-1/1.3355 | BT1 |
T1 Tool Steel Products Forms And Supply Range
Round Bars
- Diameter Range: 10 mm to 500 mm (0.39 in to 20 in)
- Length: 200mm to 6000m (10 ft to 20 ft)
Flat Bars
- Thickness: 3 mm to 100 mm (0.12 in to 4 in)
- Width: 20 mm to 300 mm (0.79 in to 12 in)
- Length: 200mm to 6 meters (10 ft to 20 ft)
Square Bars
- Side Length: 10 mm to 150 mm (0.39 in to 6 in)
- Length: 200 mm to 3000 mm (10 ft to 20 ft)
Plates
- Thickness: 5 mm to 100 mm (0.20 in to 4 in)
- Width: 100 mm to 300 mm (4 in to 12 in)
- Length: 200 mm to 3000 mm (8 in to 120 in)
T1 Tool Steel Chemical Composition
| Element | Content (%) |
| Carbon (C) | 0.75 – 0.80 |
| Chromium (Cr) | 3.75 – 4.50 |
| Manganese (Mn) | 0.10 – 0.40 |
| Silicon (Si) | 0.20 – 0.40 |
| Tungsten (W) | 17.25 – 18.75 |
| Vanadium (V) | 1.70 – 2.00 |
| Phosphorus (P) | ≤ 0.03 |
| Sulfur (S) | ≤ 0.03 |
| Nickel (Ni)+Copper (Cu) | ≤0.75 |
T1 Tool Steel Physical Properties
| Property | Metric Value | Imperial Value |
| Density | 8.67 g/cc | 0.313 lb/in³ |
| Melting Point | 2800 – 3000°C | 5072 – 5432°F |
| CTE, Linear | 9.70 µm/m-°C | 5.39 µin/in-°F |
| Thermal Conductivity | 20.0 W/m·K | 139 BTU·in/hr·ft²·°F |
| Specific Heat Capacity | 460 J/kg·K | 0.110 BTU/lb·°F |
T1 Tool Steel Mechanical Properties
| Property | Metric Value | Imperial Value |
| Hardness (HRC) | 63 – 65 HRC | 63 – 65 HRC |
| Tensile Strength | 1750 – 2100 MPa | 254,000 – 304,000 psi |
| Yield Strength | 1500 – 1800 MPa | 218,000 – 261,000 psi |
| Elongation at Break | 4 – 6 % | 4 – 6 % |
| Modulus of Resilience | 170 – 200 J/cm³ | 3.2 – 3.7 ft-lb/in³ |
| Poisson’s Ratio | 0.28 – 0.30 | 0.28 – 0.30 |
T1 Tool Steel Heat Treatment
Forging
T1 Tool Steel should be forged within a temperature range of 926°C to 1149°C (1700°F to 2100°F). During this process, it is important to cool the steel slowly in dry sand or other insulating media.
Annealing
Heat T1 Tool Steel to a temperature range of 871°C to 899°C (1600°F to 1650°F). Once the steel has reached the desired temperature, it should cool slowly at a rate of 1°C per minute (35°F per hour) until it reaches 538°C (1000°F). Using insulating media during the cooling process yields the best results.
Stress Relief
For stress relieving after rough machining, heat T1 Tool Steel to a temperature range of 593°C to 704°C (1100°F to 1300°F). The steel should be cooled slowly.
Hardening
Preheat the steel to a temperature range of 815°C to 844°C (1500°F to 1550°F). The steel should remain in the furnace for 45 minutes per 25.44 mm(1 inch) of thickness, with the heating rate kept as slow as possible.
Tempering
The temperature should range from 1022°F to 1058°F, and it is recommended to hold the steel at this temperature for at least two hours. For optimal results, double tempering (2+2 hours) is advised, with the usual tempering temperature for cutting tools between 1000°F and 1075°F. Higher temperatures between 1100°F and 1200°F can be used for tools requiring a tougher, less brittle structure.
T1 Tool Steel Applications
T1 Tool Steel is ideal for use in applications involving high-strength steels, difficult-to-machine materials, and abrasive conditions. It is a popular choice for industries like Automotive and Aerospace Industry.
Cutting Tools
- Twist drills
- Reamers
- Thread molds
- Turning tools
- Heavy-duty cutting tools
Tooling Components
- Planning and slotting tools
- Profile cutting tools
- Broaching tools
Molds and Dies
- Molds for casting processes
- Die components and punch tools
Unlock Premium T1 Tool Steel Solutions for Your Next Project
Take your machining projects to the next level with SteelPro Group’s high-quality T1 Tool Steel. We provide a range of customized options to meet your specific needs, from precision cutting tools to heavy-duty machining solutions. Reach out today to explore our tailored offerings and let us help you find the perfect T1 Tool Steel for your applications.
