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USA MIL MIL-C-62624 (1988), Haynes-25 Superalloys Castings, Investment, Cobalt Base Alloy and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Superalloys: Haynes-25
Category Class Grade Standard Country Application
Steel GradesSuperalloys Haynes-25 MIL USA Castings, Investment, Cobalt Base Alloy

Chemical composition(mass fraction)(wt.%) of the Haynes-25

C P Mn S Si Cr Ni Co Fe W
0.05 -0.15 ≤0.40 1.00 -2.00 ≤0.03 ≤0.40 19.00 -21.00 9.00 -11.00 ≤Bal ≤3.0 14.00 -16.00

Mechanical Properties of steel grade Haynes-25

Rp0.2 (MPa)
Rm (MPa)
KV/Ku (J)
A (%)
Reduction in cross section on fracture
Z (%)
As-Heat-Treated Condition Brinell hardness (HBW)
753 (≥) 394 (≥) 11 34 41 Solution and Aging, Annealing, Ausaging, Q+T,etc 322

Physical Properties of steel grade Haynes-25

Modulus of elasticity
Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and Thermal conductivity
Specific thermal capacity
Specific electrical resistivity
(Ω mm²/m)
Poisson’s coefficient, ν
22 - -     0.32 -  
568 562 - 13.3 322   -  
672 - 42 14.2   224 222

Heat Treatment of steel grade Haynes-25

Heat treated : 1384°C - 1873°C

Technological Curves of steel grade Haynes-25

Cross Reference Table (Equivalent Grade) of Haynes-25

Grade Standard Country Application
UNS R30605
UNS R30605

Relevant standard of Haynes-25

MIL-C-62624 (1988) Castings, Investment, Cobalt Base Alloy MIL-C-62624-(1988).pdf

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