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DD402

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DZ40M DD103
#DZ404

Description

China GBT DD402 Single-CrystalSuperalloy and DD402 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Special Alloy: DD402
Category Type Steel Grade Standard Country Application
Steel GradesSpecial Alloy DD402 GBT China Single-CrystalSuperalloy
DZ4
DZ5
DZ17G
DZ22
DZ22B
DZ38G
DZ002
DZ125
DZ125L
DZ40M

Chemical composition(mass fraction)(wt.%) of the DD402

C(％) Si(％) Mn(％) P(％) S(％) Cr(％) Ni(％) Mo(％) W(%) N(%) Cu(%) Co(%) Pb(%) B(%) Nb(%) Al(%) Ti(%) Ta(%) Mg(%) Sb(%) As(%) Sn(%) Ag(%) O(%) Fe(%) Other(%)
≤0.006 0.040 0.020 0.005 0.002 7.00-8.20 Bal 0.30-0.70 7.60-8.40 0.0012 0.050 4.30-4.90 0.0002 0.003 ≤0.15 5.45-5.75 0.80-1.20 5.80-6.20 0.008 0.0005 0.0005 0.0015 0.0005 0.0010 ≤0.20 Ga:0.002;Te:0.00003;Se:0.100;Yb:0.100;Zn:0.0005;

Mechanical Properties of steel grade DD402

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)
971 (≥) 463 (≥) 33 12 12 Solution and Aging, Annealing, Ausaging, Q+T,etc 122

Physical Properties of steel grade DD402

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
43 - -     0.22 -  
267 135 - 33.3 244   -  
675 - 42 43.2   134 333

Heat Treatment of steel grade DD402

Heat treated : 1711°C - 1752°C

Technological Curves of steel grade DD402

Cross Reference Table (Equivalent Grade) of DD402

Grade Standard Country Application
DZ404 GBT China Progress in Directionally Solidified Super Alloys
DD402 GBT China Single-CrystalSuperalloy
DZ40M DD103
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Jiangyou Longhai Special Steel Co.,Ltd.
Jiangyou Longhai Special Steel Co.,Ltd.

Our main peoducts of steel are many kinds of special steel, like tool steel, mould steel, alloy steel, alloy constructural steel, heat-resistant steel, high speed tool steel,spring steel and bearing steel , stainless steel and so on, which have formed 12 series and more than 350 varieties with n...

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