C-7A Special Alloy

Chemical composition%of the ladle analysis of gradeC-7A

W(%)Co(%)Ti(%)Ta(%)
71.0-83.04.5-7.07.0-12.510.0-12.0
C-7A
Density / (g/cm ^ 3) : 11.0 ~ 11.8
Hardness HRA: 91.6 ~ 93.0
Bending strength/MPa: 1205 ~ 1550
Use for example: used for heavy cutting steel light processing

Mechanical properties of gradeC-7A

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)
244(≥) 212(≥) 21 42 24 Solution and Aging,Annealing,Ausaging,Q+T,etc 444

Physical properties of grade C-7A

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
321(≥) 385(≥) 11 41 32 Solution and Aging,Annealing,Ausaging,Q+T,etc 122
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0)N/mm2
Creep rupture strength
(10000h)
(Rp1,0)N/mm2
181 982 183

C-7A 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