B 179 242.2 Stainless Steels to B 179 (2011)

B 179 242.2 - Specification & Application

  • B 179 (2011) - Aluminum Alloys in Ingot and Molten Forms for Castings from All Casting Processes

Aluminum Alloys in Ingot and Molten Forms for Castings from All Casting Processes

Chemical composition(wt.%) of B 179 242.2 grade: to B 179 (2011)

Elements Min.(≥) Max.(≤) Similar Remarks
C - 0.22
Si - 0.40
Mn - 0.75
P - -
S - -
Ni - 0.75
Cr - 12.50
Al - -
Cu - -
Ti - -
Fe - remaining
N - -
Mo - 1.00
W - 1.00
V - 0.22

B 179 242.2 - Detail

Aluminum Alloys in Ingot and Molten Forms for Castings from All Casting Processes

Mechanical properties of grade B 179 242.2 B 179 (2011)

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)
869 (≥) 418 (≥) 14 43 24 Solution and Aging, Annealing, Ausaging, Q+T,etc 333

Physical properties of grade B 179 242.2 B 179 (2011)

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
188 (≥) 611 (≥) 33 11 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 322
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
643 369 946
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