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ISO NiCr20TiAl Details

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

ISO NiCr20TiAl Standard Download

NiCr20TiAl Datasheet
ISO NiCr20TiAl

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NiCr20TiAl Application:Heat-treatable steels, alloy steels and free-cutting steels -- Part 15: Valve steels for internal combustion engines
Category Type Grade Designations
Grades Superalloys NiCr20TiAl 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(mass fraction)(wt.%)
Elements Min.（≥） Max.（≤） Similar Remarks
C 0.04 0.10
Si - 1.00
Mn - 1.00
P - 0.020
S - 0.015
Cr 18.00 21.00
Mo - -
Ni 65.00 -
Al 1.00 1.80
Fe - 3.00
Co - 2.00
B - 0.008
Cu - 0.20
Ti 1.80 2.70
Mechanical properties of grade NiCr20TiAl
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)
256 (≥) 135 (≥) 11 21 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 321
Physical properties of grade NiCr20TiAl
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
783 (≥) 889 (≥) 14 42 12 Solution and Aging, Annealing, Ausaging, Q+T,etc 331
Temp.
°C/°F		 Creep strain limit
(10000h)
(Rp1,0) N/mm2		 Creep rupture strength
(10000h)
(Rp1,0) N/mm2
961 719 755
NiCr20TiAl 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
Cross Reference Table(Equivalent Grade)
Grade Standard Country Application
NiCr20TiAl ISO International
Heat-treatable steels, alloy steels and free-cutting steels -- Part 15: Valve steels for internal combustion engines

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