MIL MIL S 861

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MIL MIL S 861

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MIL S 861 Application:MIL S 861 is available as Bar (Round, Shapes), Billet, Wire, Strip.

Chemical composition(mass fraction)(wt.%) of the MIL S 861
C(％) Si(％) Mn(％) P(％) S(％) Cr(％) Ni(％) Mo(％) V(%) W(%) Cu(%) Other(%)
0.20-0.25 0.20-0.60 1.0 0.040 0.030 11.0-13.5 0.50-1.0 0.75-1.25 0.17-0.30 0.75-1.25 0.50 Fe:Balance;

Mechanical properties of grade MIL S 861

Yield
Rp0.2 (MPa)		 Tensile
Rm (MPa)		 Impact
KV (J)		 Elongation
A (%)		 Reduction in cross section on fracture
Z (%)		 As-Heat-Treated Condition HBW
796 (≥) 123 (≥) 21 41 33 Solution and Aging, Annealing, Ausaging, Q+T,etc 321

Physical properties of grade MIL S 861

Property Density
kg/dm3		 Temperature T
°C/F		 Specific heat
J / kgK		 Thermal conductivity
W/mK		 Electric resistance
µΩ·cm
367 (≥) 251 (≥) 44 31 42 Solution and Aging, Annealing, Ausaging, Q+T,etc
Temp.
°C/°F		 Creep strain limit
(10000h)
(Rp1,0) N/mm2		 Creep rupture strength
(10000h)
(Rp1,0) N/mm2		 - - -
521 873 731 - - -

MIL S 861 Range of products
Product type Products Dimension Processes Deliver Status
Plates / Sheets Plates / Sheets 0.08-200mm(T)*W*L Forging, hot rolling and cold rolling Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting
Steel Bar Round Bar, Flat Bar, Square Bar Φ8-1200mm*L Forging, hot rolling and cold rolling, Cast Black, Rough Turning, Shot Blasting,
Coil / Strip Steel Coil /Steel Strip 0.03-16.0x1200mm Cold-Rolled & Hot-Rolled Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting
Pipes / Tubes Seamless Pipes/Tubes, Welded Pipes/Tubes OD:6-219mm x WT:0.5-20.0mm Hot extrusion, Cold Drawn, Welded Annealed, Solution and Aging, Q+T, ACID-WASHED