C-8 Special Alloy

Chemical composition%of the ladle analysis of gradeC-8

W(%)Co(%)Ti(%)Ta(%)
62.0-82.04.4-8.010.4-18.02.0-12.0
C-8
Density / (g/cm ^ 3) : 9.8 ~ 11.9
Hardness HRA: 92.0 ~ 93.0
Bending strength/MPa: 1035 ~ 1585
Use for example: used for steel precision bore

Mechanical properties of gradeC-8

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)
867(≥) 954(≥) 42 33 11 Solution and Aging,Annealing,Ausaging,Q+T,etc 221

Physical properties of grade C-8

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
599(≥) 349(≥) 33 34 21 Solution and Aging,Annealing,Ausaging,Q+T,etc 133
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0)N/mm2
Creep rupture strength
(10000h)
(Rp1,0)N/mm2
328 154 351

C-8 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

Equivalent Grade