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ASTM T4 Details
High-Speed Tool Steel
ASTM T4 Standard Download
T4 Datasheet
ASTM T4| Category | Type | Grade | Designations |
|---|---|---|---|
| Grades | Tool Die Steels | T4 | USA - ASTM , |
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | 0.70 | 0.80 | ||
| Si | 0.20 | 0.40 | ||
| Mn | 0.10 | 0.40 | ||
| P | - | 0.030 | ||
| S | - | 0.030 | ||
| Cr | 3.75 | 4.50 | ||
| Mo | 0.40 | 1.00 | ||
| V | 0.80 | 1.20 | ||
| W | 17.50 | 19.00 | ||
| Co | 4.25 | 5.75 |
| Proof strength Rp0.2 (MPa) |
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) |
|---|---|---|---|---|---|---|
| 148 (≥) | 393 (≥) | 22 | 41 | 24 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 224 |
| Property | Density kg/dm3 |
Temperature T °C/F |
Specific heat J / kgK |
Thermal conductivity W/mK |
Electric resistance µΩ·cm |
Modulus of elasticity kN/mm2 |
Expansion rate |
|---|---|---|---|---|---|---|---|
| 432 (≥) | 912 (≥) | 22 | 11 | 14 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 442 | |
| Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
| 125 | 265 | 957 |
| Product type | Products | Dimension | Processes | Deliver Status |
|---|---|---|---|---|
| Plates / Sheets | Plates / Sheets | 0.08-200mm(T)*W*L | Forging, hot rolling and cold rolling | Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting |
| Steel Bar | Round Bar, Flat Bar, Square Bar | Φ8-1200mm*L | Forging, hot rolling and cold rolling, Cast | Black, Rough Turning, Shot Blasting, |
| Coil / Strip | Steel Coil /Steel Strip | 0.03-16.0x1200mm | Cold-Rolled & Hot-Rolled | Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting |
| Pipes / Tubes | Seamless Pipes/Tubes, Welded Pipes/Tubes | OD:6-219mm x WT:0.5-20.0mm | Hot extrusion, Cold Drawn, Welded | Annealed, Solution and Aging, Q+T, ACID-WASHED |
| Grade | Standard | Country | Application |
|---|---|---|---|
| A 268 S44300 | SAE | USA | Seamless and Welded Ferritic and Martensitic Stainless Steel Tubing for General Service |
| S44300 | AISI | USA | Ferritic Chromium Copper Heat Resisting Steel |
| SA-1008 BHS Grade 44[300] | AMS | USA | Specification for Steel, Sheet, Cold-Rolled, Carbon, Structural, High-Strength Low-Alloy and High-Strength Low-Alloy With Improved Formability |
| SA-1008 SHS Grade 44[300] | AMS | USA | Specification for Steel, Sheet, Cold-Rolled, Carbon, Structural, High-Strength Low-Alloy and High-Strength Low-Alloy With Improved Formability |
| SA-268 S44300 | AMS | USA | Specification for Seamless and Welded Ferritic and Martensitic Stainless Steel Tubing for General Service |
| T41901 | UNS | USA | Shock-Resisting Tool Steel |
| T41902 | UNS | USA | Shock-Resisting Tool Steel |
| T41904 | UNS | USA | Shock-Resisting Tool Steel |
| T41905 | UNS | USA | Shock-Resisting Tool Steel |
| T41906 | UNS | USA | Shock-Resisting Tool Steel |
| T41907 | UNS | USA | Shock-Resisting Tool Steel |
| T4 | ASTM | USA | High-Speed Tool Steel |
| Stellite T40 | Whole | Whole | Stellite alloy |
Relevant products
T4 Equivalent Grade Stock
| Steel grade | Dimension | Shape | Unit | Quantity | Delivery state | Query |
|---|---|---|---|---|---|---|
| T45Cr5Si3 Round Bar | Dia.40mm | Round Bar | Kgs | 500 | Hot-Rolled+Annealed+black | Enquiry |
| 1.2714 Hot-Work Mould Steel Flat Bar Stock(2019-09-03) | Select | 0 | Select | Enquiry | ||
| 1.2714 Stock list 2020-06-15 | Select | 0 | Select | Enquiry | ||
| 1.2714 QT Bar Stock List 2020-06-15 | Select | 0 | Select | Enquiry |