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GB K125L Details

Directional Solidification Superalloy K125L

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K125L Application:Directional Solidification Superalloy
Category Type Grade Designations
Grades Superalloys K125L China - GB ,
Chemical composition(mass fraction)(wt.%)
Elements Min.(≥) Max.(≤)
C 0.06 0.14
Cr 8.20 9.80
Co 9.20 10.80
W 6.20 10.80
Ni - Bal
Mo 1.50 2.50
Al 4.30 5.30
Ti 2.00 2.80
Fe - 0.20
Ta 3.30 4.00
B 0.005 0.015
Zr - 0.05
Si - 0.15
Mn - 0.15
P - 0.001
S - 0.010
Pb - 0.0005
Sb - 0.001
Sn - 0.001
Bi - 0.00005
Ag - 0.0005
Mechanical properties of grade K125L
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)
572 (≥) 329 (≥) 33 11 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 243
Physical properties of grade K125L
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
934 (≥) 498 (≥) 31 34 44 Solution and Aging, Annealing, Ausaging, Q+T,etc 222
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
313 197 754
K125L 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
Cross Reference Table(Equivalent Grade)
Grade Standard Country Application
K125L GB China
Directional Solidification Superalloy
DZ4125L GB China
Directional Solidification Superalloy
DZ125L GB China
Directional Solidification Superalloy

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