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ASTM T2 High Speed Steel (UNS T12002)
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Standard of AISI T2 High Speed Steel Country USA Standard ASTM A600 Grades T2 / T12002 AISI T2 High Speed Steel Chemical Composition Properties ASTM A600 C Mn P S Si Cr V Mo W Co T2 0.80 0.90 0.20 0.40 0.03 0.03 0.20 0.40 3.75 4.50 1.80 2.40 … 1.00 17.50 19.00 … … AISI T2 High Speed Steel Mechanical Properties T2 Tool Steel Physical Properties Properties Metric Imperial Density 7.86 g/cm3 0.284 lb/in3 Mechanical Properties of T2 HSS Tool Steel Yield Rp0.2 (MP...
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Standard of AISI T2 High Speed Steel
| Country | USA |
| Standard | ASTM A600 |
| Grades | T2 / T12002 |
AISI T2 High Speed Steel Chemical Composition Properties
| ASTM A600 | C | Mn | P | S | Si | Cr | V | Mo | W | Co | ||||||||
| T2 | 0.80 | 0.90 | 0.20 | 0.40 | 0.03 | 0.03 | 0.20 | 0.40 | 3.75 | 4.50 | 1.80 | 2.40 | … | 1.00 | 17.50 | 19.00 | … | … |
AISI T2 High Speed Steel Mechanical Properties
- T2 Tool Steel Physical Properties
| Properties | Metric | Imperial |
| Density | 7.86 g/cm3 | 0.284 lb/in3 |
- Mechanical Properties of T2 HSS Tool Steel
| Yield Rp0.2 (MPa) |
Tensile Rm (MPa) |
Impact KV (J) |
Elongation A (%) |
Reduction in cross section on fracture Z (%) |
As-Heat-Treated Condition | HBW |
| 339 (≥) | 619 (≥) | 11 | 13 | 43 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 234 |
- Thermal Properties of T2 Tool Steel
| Properties | Metric | Imperial |
| Thermal expansion co-efficient (@20-260°C/68-500°F) | 10.6 µm/m°C | 5.89 µin/in°FForging of ASTM T2 High Speed Steel |
Soak AISI T2 tool steel for 1 hour at 2150 F (1177℃) prior to forging.
Do not work below 1850 F (1010℃). Post-work solution treatment is required prior to final hardening.
ASTM T2 High Speed Steel Heat Treatment
| Annealing hardness HBS |
Cold pull hardness HBS |
Preheating temperature ℃ |
Quenching temperature ℃ |
Holding time min |
Hardening medium | Temper temperature ℃ |
After tempering hardness ≥HRC |
|
| salt-bath furnace | controlled atmosphere furnace | |||||||
| 235 | 262 | 788 | 1191 | 1204 | 5～15 | air cooling | 522 | 60 |
Applications of ASTM/AISI T2 High Speed Steel
AISI T2 high speed steel are mainly used in high speed tool and cutting applications such as drills, milling processes, reamers, etc. Some typical applications of T2 tool steel are as below:
- Turning and slotting tools
- Broaching tools
- Reamers
- Threading dies
- Twist drills
- Tapes
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