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AFNOR NC15Fe7TA Details

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NC15Fe7TA Application:Valve steels and alloys for internal combustion engines

Category Type Grade Designations
Grades Stainless Steels NC15Fe7TA France - AFNOR , NF A 35-579 - Valve steels and alloys for internal combustion engines

Chemical composition(wt.%) of NC15Fe7TA grade: NF A 35-579

Elements Min.(≥) Max.(≤) Similar Remarks
C - 0.80
Si - 0.50
Mn - 1.00
P - 0.015
S - 0.015
Cr 14.00 17.00
Ni - remaining
Mo - 0.50
Fe 5.00 9.00
Al 0.40 1.00
Ti 2.25 2.75
Nb+Ta 0.70 1.20
Co - 1.00
Cu - 0.50
Valve steels and alloys for internal combustion engines

Mechanical properties of grade NC15Fe7TA NF A 35-579

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)
334 (≥) 391 (≥) 34 34 12 Solution and Aging, Annealing, Ausaging, Q+T,etc 224

Physical properties of grade NC15Fe7TA NF A 35-579

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
492 (≥) 543 (≥) 14 13 13 Solution and Aging, Annealing, Ausaging, Q+T,etc 121
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
618 834 614

NC15Fe7TA - 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
NC15Fe7TA AFNOR France
Valve steels and alloys for internal combustion engines

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