K4002 Special Alloy

Chemical composition%of the ladle analysis of gradeK4002

C(%)Cr(%)Ni(%)Mo(%)W(%)Co(%)B(%)Al(%)Ti(%)Ta(%)Other(%)
0.13-0.178.0-10.0BalanceMax 0.59.0-11.09.0-11.00.01-0.025.25-5.751.25-1.752.25-2.75Hf: 1.3-1.7,Zr:0.03-0.08
K4002

Mechanical properties of gradeK4002

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)
968(≥) 246(≥) 32 34 32 Solution and Aging,Annealing,Ausaging,Q+T,etc 124

Physical properties of grade K4002

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
399(≥) 548(≥) 12 11 42 Solution and Aging,Annealing,Ausaging,Q+T,etc 232
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0)N/mm2
Creep rupture strength
(10000h)
(Rp1,0)N/mm2
756 457 497

K4002 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