ASTM HP 9-4-25

Grades | Stainless Steels | HP 9-4-25

ASTM HP 9-4-25 ( Precipitation-Hardening )

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HP 9-4-25 Application:Steel Sheet, Strip, and Plate 0,48Cr - 8,0Ni - 4,0Co - 4,48Mo - 0,09V - (0,24 - 0,30C) Consumable Electrode Melted, Annealed

Chemical composition(mass fraction)(wt.%) of the HP 9-4-25
Elements Min.（≥） Max.（≤） Similar Remarks
C 0.24 0.30
Si - 0.10
Mn 0.10 0.35
Ni 7.00 9.00
Cr 0.35 0.60
Al - -
Cu - -
Ti - -
Fe - -
Mo 0.35 0.60
Co 3.50 4.50
V 0.06 0.12
P - 0.01
S - 0.01

Mechanical properties of grade HP 9-4-25

Yield
Rp0.2 (MPa)		 Tensile
Rm (MPa)		 Impact
KV (J)		 Elongation
A (%)		 Reduction in cross section on fracture
Z (%)		 As-Heat-Treated Condition HBW
369 (≥) 347 (≥) 12 14 33 Solution and Aging, Annealing, Ausaging, Q+T,etc 141

Physical properties of grade HP 9-4-25

Property Density
kg/dm3		 Temperature T
°C/F		 Specific heat
J / kgK		 Thermal conductivity
W/mK		 Electric resistance
µΩ·cm
994 (≥) 574 (≥) 33 12 21 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		 - - -
267 525 457 - - -

HP 9-4-25 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