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Korea KS MT9 镁合金无缝管及管件 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: MT9 / MT9
Category Grade Standard Region/Area Standard Content
Metals MT9 KS D 5573 Korea 镁合金无缝管及管件

Chemical composition(mass fraction)(wt.%) of the MT9

Element Min Max Similar
Ti - - -
O - 0.1500 -
N - 0.0300 -
H - 0.0130 -
Fe - 0.2000 -
C - 0.0800 -

Mechanical Properties of steel grade MT9

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)
781 (≥) 285 (≥) 22 43 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 134

Physical Properties of steel grade MT9

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 - -     0.14 -  
287 259 - 22.3 212   -  
836 - 23 34.2   343 142

Heat Treatment of steel grade MT9

Heat treated : 1843°C - 1368°C

Technological Curves of steel grade MT9

Cross Reference Table (Equivalent Grade) of MT9

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