Aluchrom 4 18 YHf Stainless Steels

Aluchrom 4 18 YHf - Specification & Application

Aluchrom 4 18 YHf

Chemical composition(wt.%) of Aluchrom 4 18 YHf grade:

Elements Min.(≥) Max.(≤) Similar Remarks
Ni - 0.5000
Cr 17.0000 19.0000
C - 0.0800
S - 0.0300
Mn - 0.5000
Si - 0.6000
Al 3.5000 5.0000
Y - 0.1500
Zr - 0.1500
Hf - 0.1500
P - 0.0400
Cu - 0.5000

Aluchrom 4 18 YHf - Detail

Aluchrom 4 18 YHf

Mechanical properties of grade Aluchrom 4 18 YHf

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)
848 (≥) 977 (≥) 41 23 13 Solution and Aging, Annealing, Ausaging, Q+T,etc 234

Physical properties of grade Aluchrom 4 18 YHf

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
649 (≥) 799 (≥) 34 31 42 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
912 724 896
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