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UNI 9 SMn23

Description

UNI 9 SMn23 Carbon Steel and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Carbon Steel: UNI 9 SMn23

Chemical composition(mass fraction)(wt.%) of the UNI 9 SMn23

Element Weight %
C 0.13 (max)
Mn 0.70-1.00
P 0.07-0.12
S 0.24-0.33

Mechanical Properties of steel grade UNI 9 SMn23

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)
185 (≥) 753 (≥) 32 23 31 Solution and Aging, Annealing, Ausaging, Q+T,etc 132

Physical Properties of steel grade UNI 9 SMn23

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
34 - -     0.33 -  
958 874 - 34.3 131   -  
897 - 33 32.2   444 124

Heat Treatment of steel grade UNI 9 SMn23

Heat treated : 1457°C - 1549°C

Technological Curves of steel grade UNI 9 SMn23

Cross Reference Table (Equivalent Grade) of UNI 9 SMn23

Grade Standard Country Application
UnitempAF2-1 USA Martensitic special steel
UnitempHS AISI USA Martensitic special steel
Q195 China Engineering and welding
Q215 China Engineering and welding
Q215 B China Engineering and welding
Q235 China Engineering and welding
Q235 B China Engineering and welding
Q235 C China Engineering and welding
Q235 D China Engineering and welding
Q255 A China Engineering and welding
Q255 B China Engineering and welding
Q275 China Engineering and welding
Q235q C China Bridge structure with steel
Q235q D China Bridge structure with steel
Q345q E China Bridge structure with steel
Q345q C China Bridge structure with steel
ASTM 1030 ASTM USA General use carbon steel bar
UNS G10300 UNS USA General use carbon steel bar
ASTM 1005 ASTM USA General use carbon steel bar
UNS G10050 UNS USA General use carbon steel bar

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