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Steel Products

Engineering mechanical steel

Engineering mechanical steel
  • ProductsEngineering mechanical steel

Detailed

Engineering mechanical steel

 

 

variety
Steel grade
Process
standard/specification
Purposes&LYSproduct characteristics
High-strength steel for engineering mechanical use
 
LG600
hot rolling steel with yield strength 600MPa
Technical specification
Used For truck crane jib, rotating truck crane jib, rotating stands, engineering mechanism, the main backbone of lengthened (weighting) container, large-scale engineering parts, and heavy auto structure.
①High strength, plasticity and toughness, well-distributed and stable mechanical performance.
②good processing properties.
③can meet a variety of welding requests.
LG700
hot-rolled steel with yield strength 700MPa
Technical specification
LG700T
tempered steel with yield strength 700MPa
GB/T 16270-2009 Technical specification, GB/T 16270-2009
LG700QT
quenched and tempered steel with yield strength 700MPa
GB/T 16270-2009 Technical specification, GB/T 16270-2009
LG900QT
quenched and tempered steel with yield strength 900MPa
GB/T 16270-2009 Technical specification, GB/T 16270-2009
LG960QT
quenched and tempered steel with yield strength 960MPa
GB/T 16270-2009 Technical specification, GB/T 16270-2009

 

 

        Main performance index

 

 

category
Steel grade
Rel/Rp0.2(MPa)
Rm(MPa)
A50(%)
Cold bending
Impact temperature
Akv(J)
High-strength steel for engineering mechanical use
 
LG600
≥585
≥685
≥17
d=3aqualified
-20
≥47
LG700
≥685
≥750
≥14
d=3a,qualified
-20
≥47
LG700T
≥685
≥750
≥14
d=3a,qualified
-20
≥47
LG700QT
≥685
≥750
≥14
d=3a,qualified
-20
≥47
LG900QT
≥900
≥950
≥11
d=4a,qualified
-20
≥34
LG960QT
≥960
≥980
≥10
d=4a,qualified
-20
≥34
Shipbuilding sheet
CCS-A
≥235
400~520
≥22
d=2a,qualified
20
/
CCS-B
≥235
400~520
≥22
d=3a,qualified
0
≥27
CCS-D
≥235
400~520
≥22
d=3a,qualified
-20
≥27
CCS-E
≥235
400~520
≥22
d=3a,qualified
-40
≥27
CCS-AH32
≥315
440~570
≥22
d=3a,qualified
0
≥31
CCS-DH32
≥315
440~570
≥22
d=3a,qualified
-20
≥31
CCS-AH36
≥355
490~630
≥21
d=3a,qualified
0
≥34
CCS-DH36
≥355
490~630
≥21
d=3a,qualified
-20
≥34
Bridge plate
Q235qC
≥235
≥400
≥26
d=2a,3a,qualified
0
≥34
Q235qD
≥235
≥400
≥26
d=2a,3a,qualified
-20
≥34
Q235qE
≥235
≥400
≥26
d=2a,3a,qualified
-40
≥34
Q345qC
≥345
≥490
≥26
d=2a,3a,qualified
0
≥47
Q345qD
≥345
≥490
≥26
d=2a,3a,qualified
-20
≥47
Q345qE
≥345
≥490
≥26
d=2a,3a,qualified
-40
≥47
Q370qC
≥370
≥510
≥20
d=2a,3a,qualified
0
≥47
Q370qD
≥370
≥510
≥20
d=2a,3a,qualified
-20
≥47
Q370qE
≥370
≥510
≥20
d=2a,3a,qualified
-40
≥47
Q420qC
≥420
≥540
≥19
d=2a,3a,qualified
0
≥47
Q420qD
≥420
≥540
≥19
d=2a,3a,qualified
-20
≥47
Q420qE
≥420
≥540
≥19
d=2a,3a,qualified
-40
≥47

 

 

         Key process and technology guarantees

        1.Slab micro-structure defects control technology
        2.Slab slow cooling and hot delivery hot charging technology
        3.Temperature accuracy control technology in hot rolling process
        4.Performance stability control technology
        5.Slab shape control technology