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HSS Steel Round Rod Bar Product Introduction
ASTM T6 high-speed tool steel is also a tungsten-type high-speed steel in the ASTM A600 specification. ASTM T6 tool steel is similar to T5 tool steel, but T-6 steel has higher cobalt and tungsten content than T5 tool steel, and T6 tool steel has better high-temperature hardness and wear resistance.
ASTM T6 is also a cobalt-containing tungsten high-speed steel with slightly higher high-temperature hardness and a surface hardness of 63 HRC after quenching. Used for high-speed cutting tools, machine tool automation, and cutting high-strength materials.
High Speed Steel

Steel Round Bar Product Details
Standard of AISI T6 Tool Steel High Speed:
| Country | USA |
| Standard | ASTM A600 |
| Grades | T6 / T12006 |
ASTM High Speed T6 Steel Chemical Composition Properties:
| ASTM A600 | C | Mn | P | S | Si | Cr | V | Mo | W | Co | ||||||||
| T6 / T12006 | 0.75 | 0.85 | 0.20 | 0.40 | 0.03 | 0.03 | 0.20 | 0.40 | 4.00 | 4.75 | 1.50 | 2.10 | 0.40 | 1.00 | 18.50 | 21.00 | 11.00 | 13.00 |
Mechanical Properties of T-6 Tool Steel:
|
Proof strength Rp0.2 |
Tensile strength Rm (MPa) |
Impact energy KV (J) |
Elongation at fracture A (%) |
Reduction in cross section on fracture Z (%) |
As-Heat-Treated Condition | Brinell hardness (HBW) |
| 633 (≥) | 366 (≥) | 43 | 23 | 41 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 134 |
High Speed Steel

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Steel Bar

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