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DD408

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China GJB DD408 铸造高温合金和铸造金属间化合物高温材料母合金规范 第3部分 单晶铸件用铸造高温合金母合金 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: DD408 / DD408
Category Grade Standard Region/Area Standard Content
Metals DD408 GJB 5512.3 China 铸造高温合金和铸造金属间化合物高温材料母合金规范 第3部分 单晶铸件用铸造高温合金母合金

Chemical composition(mass fraction)(wt.%) of the DD408

Element Min Max Similar
C - 0.0300 -
Cr 15.5000 16.5000 -
Ni - - -
Co 8.0000 9.0000 -
W 5.6000 6.4000 -
Al 3.6000 4.2000 -
Ti 3.6000 4.2000 -
Fe - 0.5000 -
Ta 0.7000 1.2000 -
Cu - 0.1000 -
Mg - 0.0030 -
O - 0.0010 -
N - 0.0012 -
B - 0.0050 -
Zr - 0.0070 -
Si - 0.1500 -
Mn - 0.1500 -
P - 0.0100 -
S - 0.0100 -
Pb - 0.0010 -
As - 0.0050 -
Sn - 0.0020 -
Bi - 0.0001 -

Mechanical Properties of steel grade DD408

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)
767 (≥) 516 (≥) 14 23 24 Solution and Aging, Annealing, Ausaging, Q+T,etc 332

Physical Properties of steel grade DD408

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 - -     0.12 -  
798 396 - 11.3 331   -  
324 - 11 13.2   232 423

Heat Treatment of steel grade DD408

Heat treated : 1152°C - 1569°C

Technological Curves of steel grade DD408

Cross Reference Table (Equivalent Grade) of DD408

Grade Standard Country Application
ASTM 5140
AISI 201
AISI 202
1.2767
17-4PH
AISI 1052
AISI 416Se
AISI 1330
AISI 205 Stainless Steel
AISI A10
AISI A2
AISI A3
AISI A4
1.0036
1.0037
SAE J403
UNS G10100
AMS 4924
ASTM A36
Electrode 100S-1
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