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C-7Application:Machining with carbide
CategoryTypeSteel gradeStandardCountry
Grades Special Alloy C-7AISIUSA

Chemical composition%of the ladle analysis of gradeC-7

W(%)Co(%)Ti(%)Ta(%)
71.0-83.04.0-7.24.4-13.03.0-12.0
C-7
Density / (g/cm ^ 3) : 11.1-12.7
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-7
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 ConditionBrinell hardness(HBW)
836(≥)598(≥)313442Solution and Aging,Annealing,Ausaging,Q+T,etc132
Physical properties of gradeC-7
PropertyDensity
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
444(≥)126(≥)431213Solution and Aging,Annealing,Ausaging,Q+T,etc122
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0)N/mm2
Creep rupture strength
(10000h)
(Rp1,0)N/mm2
161616649
C-7Range of products
Product typeProductsDimensionProcessesDeliver Status
Plates/SheetsPlates/Sheets0.08-200mm(T)*W*LForging,hot rolling and cold rollingAnnealed,Solution and Aging,Q+T,ACID-WASHED,Shot Blasting
Steel BarRound Bar,Flat Bar,Square BarΦ8-1200mm*LForging,hot rolling and cold rolling,CastBlack,Rough Turning,Shot Blasting,
Coil/StripSteel Coil/Steel Strip0.03-16.0x1200mmCold-Rolled&Hot-RolledAnnealed,Solution and Aging,Q+T,ACID-WASHED,Shot Blasting
Pipes/TubesSeamless Pipes/Tubes,Welded Pipes/TubesOD:6-219mm x WT:0.5-20.0mmHot extrusion,Cold Drawn,WeldedAnnealed,Solution and Aging,Q+T,ACID-WASHED

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