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ISO NiCr15Fe7TiAl Details

NiCr15Fe7TiAl Application:Heat-treatable steels, alloy steels and free-cutting steels -- Part 15: Valve steels for internal combustion engines

Category Type Grade Designations
Grades Stainless Steels - Special Steels NiCr15Fe7TiAl International - ISO , ISO 683-15 (1992) - Heat-treatable steels, alloy steels and free-cutting steels -- Part 15: Valve steels for internal combustion engines

Chemical composition(wt.%) of NiCr15Fe7TiAl grade: ISO 683-15 (1992)

Elements Min.(≥) Max.(≤)
C 0.03 0.10
Si - 0.50
Mn - 0.50
P - 0.015
S - 0.015
Cr 14.00 17.00
Mo - 0.15
Ni remaining -
Al 1.10 1.35
Fe 5.00 9.00
Nb+Ta 0.70 1.20
Ti 2.00 2.60
Heat-treatable steels, alloy steels and free-cutting steels -- Part 15: Valve steels for internal combustion engines

Mechanical properties of grade NiCr15Fe7TiAl ISO 683-15 (1992)

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)
217 (≥) 168 (≥) 42 13 23 Solution and Aging, Annealing, Ausaging, Q+T,etc 321

Physical properties of grade NiCr15Fe7TiAl ISO 683-15 (1992)

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
978 (≥) 677 (≥) 22 24 23 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
784 642 558

NiCr15Fe7TiAl - 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
NiCr15Fe7TiAl ISO International
Heat-treatable steels, alloy steels and free-cutting steels -- Part 15: Valve steels for internal combustion engines
2.4669 DIN Germany
NiCrFeTi alloy; High-temperature resisting material
NiCr15Fe7TiAl DIN Germany
NiCrFeTi alloy; High-temperature resisting material
N07750 UNS USA
Ni-Cr Alloy Precipitation Hardenable
B 637 N07750 Type 1 ASTM USA
Precipitation-Hardening and Cold Worked Nickel Alloy Bars, Forgings, and Forging Stock for Moderate or High Temperature Service
B 637 N07750 Type 2 ASTM USA
Precipitation-Hardening and Cold Worked Nickel Alloy Bars, Forgings, and Forging Stock for Moderate or High Temperature Service
SB-637 N07750 Type 1 ASME USA
Precipitation-Hardening Nickel Alloy Bars, Forgings, and Forging Stock for High-Temperature Service
Inconel X750 SAE USA
Nickel Alloy, Corrosion and Heat-Resistant, Sheet, Strip, and Plate 72Ni - 15.5Cr - 0.95Cb(Nb) - 2.5Ti - 0.70Al - 7.0Fe Annealed

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