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China HB Co998 铸造高温合金选用原材料技术要求 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: Co998 / Co998
Category Grade Standard Region/Area Standard Content
Metals Co998 HB/Z 131 China 铸造高温合金选用原材料技术要求

Chemical composition(mass fraction)(wt.%) of the Co998

Element Min Max Similar
Others total - 0.2000 -
Bi - 0.0003 -
Sb - 0.0003 -
Sn - 0.0003 -
Al - 0.0020 -
P - 0.0010 -
Mg - 0.0020 -
Cd - 0.0003 -
Si - 0.0030 -
Zn - 0.0020 -
Pb - 0.0004 -
As - 0.0005 -
Cu - 0.0030 -
Ni - 0.1000 -
Fe - 0.0060 -
Mn - 0.0050 -
S - 0.0020 -
C - 0.0050 -
Co 99.8000 - -

Mechanical Properties of steel grade Co998

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)
455 (≥) 346 (≥) 21 32 12 Solution and Aging, Annealing, Ausaging, Q+T,etc 411

Physical Properties of steel grade Co998

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
22 - -     0.22 -  
114 237 - 34.3 241   -  
843 - 44 24.2   422 141

Heat Treatment of steel grade Co998

Heat treated : 1267°C - 1686°C

Technological Curves of steel grade Co998

Cross Reference Table (Equivalent Grade) of Co998

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