Grades | Tool Die Steels | T20819

UNS T20819

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T20819 Application:Hot-Work Tool Steel

Chemical composition(mass fraction)(wt.%) of the T20819
Elements Min.(≥) Max.(≤) Similar Remarks
C 0.32 0.45
Si 0.20 0.50
Mn 0.20 0.50
P - 0.030
S - 0.030
Cr 4.00 4.75
Mo 0.30 0.55
V 1.75 2.20
W 3.75 4.50
Ni+Cu - 0.75
Co 4.00 4.50

Mechanical properties of grade T20819

Yield
Rp0.2 (MPa)
Tensile
Rm (MPa)
Impact
KV (J)
Elongation
A (%)
Reduction in cross section on fracture
Z (%)
As-Heat-Treated Condition HBW
222 (≥) 126 (≥) 24 14 23 Solution and Aging, Annealing, Ausaging, Q+T,etc 211

Physical properties of grade T20819

Property Density
kg/dm3
Temperature T
°C/F
Specific heat
J / kgK
Thermal conductivity
W/mK
Electric resistance
µΩ·cm
642 (≥) 969 (≥) 21 33 22 Solution and Aging, Annealing, Ausaging, Q+T,etc
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
- - -
738 967 364 - - -

T20819 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