DAT54 (Heat -resistant Titanium alloy) suitable for engine-valve

Features

  • Heat resistance is superior to other titanium alloys.
  • Its density is 60% that of steel, so the inertial mass of the valve is small and its movement is smoother.

Sample of applicable components

  • Engine-valve

Heat-resistant graph

Heat-resistant graph

DAT54:6Al-4Sn-3.5Zr-3Mo-1Nb-0.3Si
Ti-6246:6Al-2Sn-4Zr-6Mo
Ti-64:6Al-4V
Ti-811:8Al-1Mo-1V
Ti-6242:6Al-2Sn-4Zr-2Mo
lMl829:6Al-3.5Sn-3Zr-0.3Mo-1Nb-0.3Si
lMl685:6Al-5Zr-0.5Mo-0.3Si
Ti-5-2.5:5Al-2.5Sn
*1:0.1% creep temperature at stress 274.MPa, 100h

Material value

Test temperature
Normal temperature 540℃
Density (g/cm3)
4.62
-
Average heat expansion coefficient (×10-6/℃)
8.0
10.2
Thermal conductivity (W/m.k)
5.8
12.0
Specific heat (J/g・k)
0.50
0.61
Young's modulus (GPa)
110
82
Shear modulus (GPa)
42
31
Poisson's ratio
0.32
0.31
Fatigue strength (MPa)
580
480

Rotating bending fatigue strength

Rotating bending fatigue strength

Test piece:Ono type, smoothing
Revolutions:3600rpm

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