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K403Application:Age hardening type Nickel base alloy
CategoryTypeSteel gradeStandardCountry
Grades Special Alloy K403GBTChina

Chemical composition%of the ladle analysis of gradeK403

C(%)Si(%)Mn(%)P(%)S(%)Cr(%)Ni(%)Mo(%)W(%)Co(%)B(%)Al(%)Ti(%)Other(%)
0.11-0.18Max 0.5Max 0.5Max 0.02Max 0.0110.0-12.0Balance3.80-4.504.80-5.504.50-6.00 0.012-0.0225.30-5.902.30-2.90Ce:Max 0.01,Zr: 0.03-0.08
K403
Mechanical properties of gradeK403
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)
954(≥)655(≥)321441Solution and Aging,Annealing,Ausaging,Q+T,etc333
Physical properties of gradeK403
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
735(≥)194(≥)434221Solution and Aging,Annealing,Ausaging,Q+T,etc414
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0)N/mm2
Creep rupture strength
(10000h)
(Rp1,0)N/mm2
493841585
K403Range 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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