T4
Qilu
Product Description
SKH3 1.3255 T4 High Speed Steel Round Bar
1: AISI T4 Steel Introduction
AISI T4 tool steel is one of tungsten type high speed tool steel, which belongs to ASTM A600specification, the standard for high speed tool steel materials. T4 tool steel is similar to T1 Tool Steel materials, but with 4.25~5.75% cobalt added to increase heat resistance. The red hardness of T4 steel and the high temperature hardness is a little higher than T1 tool steel. AISI T4 tool steel is a deep hardening alloy capable of Rockwell C 64 hardness.
T4 steel Stock in warehouse
2: A600 Quality Standard
ASTM-A600-1992-ENG Standard-Specification-for-High-Speed-Tool-Steel.pdf
3: AISI T4 Steel Equivalent
| Country | USA | German | Japan |
| Standard | ASTM A600 | DIN EN ISO 4957 | JIS G4403 |
| Grade | T4/T12004 | 1.3255/HS18-1-2-5 | SKH3 |
4: AISI T4 Steel Chemical Composition
| Grade | C | Si | Mn | P | S | Cr | Mo | V | W | Co |
| T4 | 0.7-0.8 | 0.2-0.4 | 0.1-0.4 | 0.03 | 0.03 | 3.75-4.5 | 0.4-1.0 | 0.8-1.2 | 17.5-19 | 4.25-5.75 |
| 1.3255 | 0.75-0.83 | 0.45 | 0.4 | 0.03 | 0.03 | 3.8-4.5 | 0.5-0.8 | 0.8-1.2 | 17.5-18.5 | 4.5-5.5 |
| SKH3 | 0.73-0.83 | 0.45 | 0.4 | 0.03 | 0.03 | 3.8-4.5 | / | 0.8-1.2 | 17-19 | 4.5-5.5 |
