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Description

AWS EM2 Mould Steel and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Mould Steel: AWS EM2
Category Type Steel Grade Standard Country Application
Steel GradesMould Steel AWS EM2
EF2
UNS K21450
EF3
UNS K21485
EF4
UNS K12048
EF5
UNS K41370
EF6
UNS K21135

Chemical composition(mass fraction)(wt.%) of the AWS EM2

 

 


C
Si
Mn
P
S
Cr Ni
0.1 0.2-0.6 1.25-1.8 0.01 0.015 ≤0.3 1.4-2.1
Mo Al Cu Zr Ti V Ce
0.25-0.55 ≤0.1 ≤0.25 ≤0.1 ≤0.1 ≤0.05  
N Co Pb B Other    
             
             

Mechanical Properties of steel grade AWS EM2

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)
145 (≥) 321 (≥) 34 41 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 242

Physical Properties of steel grade AWS EM2

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
42 - -     0.41 -  
127 812 - 12.3 341   -  
454 - 43 22.2   432 311

Heat Treatment of steel grade AWS EM2

Heat treated : 1142°C - 1999°C

Technological Curves of steel grade AWS EM2

Cross Reference Table (Equivalent Grade) of AWS EM2

Grade Standard Country Application
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
ASTM 1006 ASTM USA General use carbon steel bar
UNS G10060 UNS USA General use carbon steel bar

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