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Description

USA UNS SAE AMS 6439D (2011), D6AC Specialsteel Steel Sheet, Strip, and Plate 1.05Cr - 0.55Ni - 1.0Mo - 0.12V (0.42 - 0.48C) (D6AC) Consumable Electrode Vacuum Melted, Annealed and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: D6AC
Category Class Grade Type Standard Country Application
Steel GradesSpecialsteel D6AC Precipitation-Hardening UNS USA Steel Sheet, Strip, and Plate 1.05Cr - 0.55Ni - 1.0Mo - 0.12V (0.42 - 0.48C) (D6AC) Consumable Electrode Vacuum Melted, Annealed

Chemical composition(mass fraction)(wt.%) of the D6AC

C Si Mn P S Ni Cr Al Cu Ti Fe Mo Co V
≤0.47 ≤0.22 ≤0.75 ≤ ≥ ≤ ≥ ≤0.55 ≤1.05 ≤ ≥ ≤ ≥ ≤ ≥ ≤remaining ≤1.00 ≤ ≥ ≤0.10

Mechanical Properties of steel grade D6AC

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)
324 (≥) 428 (≥) 44 12 43 Solution and Aging, Annealing, Ausaging, Q+T,etc 141

Physical Properties of steel grade D6AC

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
31 - -     0.21 -  
867 798 - 41.3 224   -  
866 - 33 21.2   414 312

Heat Treatment of steel grade D6AC

Heat treated : 1949°C - 1277°C

Technological Curves of steel grade D6AC

Relevant standard of D6AC

SAE AMS 6439D (2011) Steel Sheet, Strip, and Plate 1.05Cr - 0.55Ni - 1.0Mo - 0.12V (0.42 - 0.48C) (D6AC) Consumable Electrode Vacuum Melted, Annealed SAE-AMS-6439D-(2011).pdf

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