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ASTM T6 Details

High-Speed Tool Steel

ASTM T6 Standard Download

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T6 Application:High-Speed Tool Steel
Category Type Grade Designations
Grades Tool Die Steels T6 USA - ASTM ,
Chemical composition(mass fraction)(wt.%)
Elements Min.(≥) Max.(≤) Similar Remarks
C 0.75 0.85
Si 0.20 0.40
Mn 0.20 0.40
P - 0.030
S - 0.030
Cr 4.00 4.75
Mo 0.40 1.00
V 1.50 2.10
W 18.50 21.00
Co 11.00 13.00
Mechanical properties of grade T6
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)
994 (≥) 276 (≥) 22 22 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 242
Physical properties of grade T6
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
792 (≥) 762 (≥) 33 24 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 434
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
528 317 868
T6 Range of products
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
Cross Reference Table(Equivalent Grade)
Grade Standard Country Application
T60601 UNS USA
Carbon Wolfram Tool Steel
T60602 UNS USA
Carbon Wolfram Tool Steel
T61202 UNS USA
Low Alloy Tool Steel
T61203 UNS USA
Low Alloy Tool Steel
T61206 UNS USA
Low Alloy Tool Steel
T61202 UNS USA
Low Alloy Tool Steel
T61203 UNS USA
Low Alloy Tool Steel
T61206 UNS USA
Low Alloy Tool Steel
T60601 UNS USA
Carbon Wolfram Tool Steel
T6 ASTM USA
High-Speed Tool Steel