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YG8A Application:Hard alloy tungsten cobalt class
Category Type Steel grade Country
Grades Special Alloy YG8A China

Chemical composition % of the ladle analysis of grade YG8A

Chemical composition (%) | WC: 91
Chemical composition (%) | TiC:-
Chemical composition (%) | TaC (NbC) : < 1.0
Chemical composition (%) | Co: 8
Chemical composition (%) | other:-
Density / (g/cm ^ 3) : 14.5 ~ 14.9
Hardness HRA: 89.5
Bending strength σ bb/MPa: 1500
The impact toughness aK / (J/cm ^ 2) :-
Mechanical properties of grade YG8A
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)
946 (≥) 731 (≥) 23 12 23 Solution and Aging, Annealing, Ausaging, Q+T,etc 443
Physical properties of grade YG8A
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
649 (≥) 329 (≥) 22 43 11 Solution and Aging, Annealing, Ausaging, Q+T,etc 211
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
127 519 566
YG8A 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

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