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China GB DD403 高温合金和金属间化合物高温材料的分类和牌号 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: DD403 / DD403
Category Grade Standard Region/Area Standard Content
Metals DD403 GB/T 14992 China 高温合金和金属间化合物高温材料的分类和牌号

Chemical composition(mass fraction)(wt.%) of the DD403

Element Min Max Similar
Zr - 0.0075 -
W 5.0000 6.0000 -
Ti 1.7000 2.4000 -
Sn - 0.0010 -
Si - 0.2000 -
Sb - 0.0010 -
S - 0.0020 -
Pb - 0.0005 -
P - 0.0100 -
O - 0.0010 -
Ni - - -
N - 0.0012 -
Mo 3.5000 4.5000 -
Mn - 0.2000 -
Mg - 0.0030 -
Hf - 0.0050 -
Fe - 0.5000 -
Cu - 0.1000 -
Cr 9.0000 10.0000 -
Co 4.5000 5.5000 -
C - 0.0100 -
Bi - 0.0000 -
B - 0.0050 -
As - 0.0010 -
Al 5.5000 6.2000 -
Ag - 0.0005 -

Mechanical Properties of steel grade DD403

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)
786 (≥) 556 (≥) 43 13 23 Solution and Aging, Annealing, Ausaging, Q+T,etc 334

Physical Properties of steel grade DD403

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
23 - -     0.21 -  
313 266 - 21.3 322   -  
574 - 42 43.2   232 144

Heat Treatment of steel grade DD403

Heat treated : 1272°C - 1845°C

Technological Curves of steel grade DD403

Cross Reference Table (Equivalent Grade) of DD403

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