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India IS D-1 Tungsten rods and tungsten wire for lamps and electron devices and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: D-1 / D-1
Category Grade Standard Region/Area Standard Content
Metals D-1 IS 11900 India Tungsten rods and tungsten wire for lamps and electron devices

Chemical composition(mass fraction)(wt.%) of the D-1

Element Min Max Similar
W 99.9500 - -
Mo - 0.0200 -
Fe - 0.0100 -

Mechanical Properties of steel grade D-1

Yield
Rp0.2 (MPa)
Tensile
Rm (MPa)
Impact
KV/Ku (J)
Elongation
A (%)
Reduction in cross section on fracture
Z (%)
As-Heat-Treated Condition Brinell hardness (HBW)
466 (≥) 485 (≥) 43 24 12 Solution and Aging, Annealing, Ausaging, Q+T,etc 123

Physical Properties of steel grade D-1

Temperature
(°C)
Modulus of elasticity
(GPa)
Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and Thermal conductivity
(W/m·°C)
Specific thermal capacity
(J/kg·°C)
Specific electrical resistivity
(Ω mm²/m)
Density
(kg/dm³)
Poisson’s coefficient, ν
13 - -     0.31 -  
152 618 - 41.3 342   -  
789 - 24 33.2   331 232

Heat Treatment of steel grade D-1

Heat treated : 1222°C - 1698°C

Technological Curves of steel grade D-1

Cross Reference Table (Equivalent Grade) of D-1

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