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CQ-15 Application:W-Co class carbide
Category Type Steel grade Standard Country
Grades Special Alloy CQ-15 AISI USA

Chemical composition % of the ladle analysis of grade CQ-15

C(%) W(%) Co(%)
5.20 79.80 15.0
CQ-15
Density / (g/cm ^ 3) : 14.00
Hardness HRC: 88.0
σ bb/MPa: 2740
Grain size/μ m: 1 ~ 2
Use for example: in the medium and severe impact conditions of use
Mechanical properties of grade CQ-15
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)
279 (≥) 164 (≥) 31 31 23 Solution and Aging, Annealing, Ausaging, Q+T,etc 343
Physical properties of grade CQ-15
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
717 (≥) 716 (≥) 44 14 24 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
326 828 844
CQ-15 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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