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B 179 242.2

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A 982 S42225 B 179 A242.2
#422

Description

USA SAE B 179 (2011), B 179 242.2 Specialsteel Aluminum Alloys in Ingot and Molten Forms for Castings from All Casting Processes and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: B 179 242.2
Category Class Grade Type Standard Country Application
Steel GradesSpecialsteel B 179 242.2 Precipitation-Hardening SAE USA Aluminum Alloys in Ingot and Molten Forms for Castings from All Casting Processes

Chemical composition(mass fraction)(wt.%) of the B 179 242.2

C Si Mn P S Ni Cr Al Cu Ti Fe N Mo W V
≤0.22 ≤0.40 ≤0.75 ≤ ≥ ≤ ≥ ≤0.75 ≤12.50 ≤ ≥ ≤ ≥ ≤ ≥ ≤remaining ≤ ≥ ≤1.00 ≤1.00 ≤0.22

Mechanical Properties of steel grade B 179 242.2

Yield
Rp0.2 (MPa)		 Tensile
Rm (MPa)		 Impact
KV/Ku (J)		 Elongation
A (%)		 Reduction in cross section on fracture
Z (%)		 As-Heat-Treated Condition Brinell hardness (HBW)
851 (≥) 525 (≥) 41 44 33 Solution and Aging, Annealing, Ausaging, Q+T,etc 343

Physical Properties of steel grade B 179 242.2

Temperature
(°C)		 Modulus of elasticity
(GPa)		 Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and Thermal conductivity
(W/m·°C)		 Specific thermal capacity
(J/kg·°C)		 Specific electrical resistivity
(Ω mm²/m)		 Density
(kg/dm³)		 Poisson’s coefficient, ν
42 - -     0.14 -  
872 525 - 14.3 331   -  
794 - 11 21.2   113 431

Heat Treatment of steel grade B 179 242.2

Heat treated : 1725°C - 1741°C

Technological Curves of steel grade B 179 242.2

Cross Reference Table (Equivalent Grade) of B 179 242.2

Grade Standard Country Application
1.5422
1.5422
S42200
S42225
S42200
S42200
422
422M(C)
422M
S42200
SAE 4422
UNS G44220
ASTM 4422
UNS G44220
AMS 6422E
UNS K11422
UNS J94224
UNS J42215
UNS J42220
422(S42200)

Relevant standard of B 179 242.2

B 179 (2011) Aluminum Alloys in Ingot and Molten Forms for Castings from All Casting Processes B-179-(2011).pdf
A 982 S42225 B 179 A242.2
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