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UNS NiFe 25 Cr 20 NbTi Details

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NiFe 25 Cr 20 NbTi Application:Engine poppet valve information report

Category Type Grade Microstructure Designations
Grades Stainless Steels NiFe 25 Cr 20 NbTi Precipitation-Hardening USA - UNS , SAE J 775 (2004) - Engine poppet valve information report

Chemical composition(wt.%) of NiFe 25 Cr 20 NbTi grade: SAE J 775 (2004)

Elements Min.(≥) Max.(≤) Similar Remarks
C - 0.12
Si - 0.30
Mn - 0.80
Cr - 19.00
Ni - 14.00
Mo - -
Co - -
W - -
Al - -
Cu - -
Ti - -
Fe - remaining
Nb - 1.60
Engine poppet valve information report

Mechanical properties of grade NiFe 25 Cr 20 NbTi SAE J 775 (2004)

Proof strength
Rp0.2 (MPa)
Tensile strength
Rm (MPa)
Impact energy
KV (J)
Elongation at fracture
A (%)
Reduction in cross section on fracture
Z (%)
As-Heat-Treated Condition Brinell hardness (HBW)
713 (≥) 711 (≥) 44 34 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 142

Physical properties of grade NiFe 25 Cr 20 NbTi SAE J 775 (2004)

Property Density
kg/dm3
Temperature T
°C/F
Specific heat
J / kgK
Thermal conductivity
W/mK
Electric resistance
µΩ·cm
Modulus of elasticity
kN/mm2
Expansion rate
499 (≥) 345 (≥) 42 14 11 Solution and Aging, Annealing, Ausaging, Q+T,etc 321
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
412 331 239

NiFe 25 Cr 20 NbTi - Form of Supply

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

Cross Reference Table(Equivalent Grade)

Grade Standard Country Application
A 403 CR20CB SAE USA
Standard Specification for Wrought Austenitic Stainless Steel Piping Fittings
B 275 GR20A SAE USA
Standard Practice for Codification of Certain Nonferrous Metals and Alloys, Cast and Wrought
B 275 GR20B SAE USA
Standard Practice for Codification of Certain Nonferrous Metals and Alloys, Cast and Wrought
B 344 Ni35-Cr20 SAE USA
Drawn or Rolled Nickel-Chromium and Nickel-Chromium-Iron Alloys for Electrical Heating Elements
B 344 Ni80-Cr20 SAE USA
Drawn or Rolled Nickel-Chromium and Nickel-Chromium-Iron Alloys for Electrical Heating Elements
B 564 R20033 SAE USA
Standard Specification for Nickel Alloy Forgings
B 619 R20033 SAE USA
Standard Specification for Welded Nickel and Nickel-Cobalt Alloy Pipe
B 622 R20033 SAE USA
Seamless Nickel and Nickel-Cobalt Alloy Pipe and Tube
B 625 R20033 SAE USA
UNS N08925, UNS N08031, UNS N08932, UNS N08926, UNS N08354, and UNS R20033 Plate, Sheet, and Strip
B 626 R20033 SAE USA
Standard Specification for Welded Nickel and Nickel-Cobalt Alloy Tube
B 649 R20033 SAE USA
Nickel-iron-chromium-molybdenum-copper low-carbon alloys bar and wire
ER 209 AMS USA
Bare Stainless Steel Welding Electrodes and Rods
ER 209 AMS USA
Bare Stainless Steel Welding Electrodes and Rods
HARPER 200 UNS USA
Wrought nickel and nickel-related alloys
NiFe 25 Cr 20 NbTi UNS USA
Engine poppet valve information report
R20033 AISI USA
Cr-Ni-Fe-Mo Austenitic stainless steel
R20500 AISI USA
Chromium-Nickel alloy
R20501 AISI USA
Cr-Ni-Nb Casting alloy
R-206.0 AMS USA
Bare aluminum and aluminum-alloy welding electrodes and rods
R-206.0 AWS USA
Bare aluminum and aluminum-alloy welding electrodes and rods

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