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Engineering machinery steel

Engineering machinery steel: LG600, LG700, LG600T/TE, LG700T/TE, LG800T, LG700T-GJ, GJ900T; LG600QT, LG700QT, LG700QT-GLC, LG800QT, LG900QT, LG960QT, LG1100QT, LG1300QT, LG1400QT High strength structural steel: Q460, Q500, Q550, Q620, Q690, Q800, Q890, Q960, Q1100, Q1300, Q1400
  • Commodity name： Engineering machinery steel

Category:

Engineering Machinery Steel

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david@prosper-bridge.com

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  • Product Description

  • Engineering machinery steel has high strength, good forming property , excellent surface quality, high thickness accuracy and good weldability with yield strength of 460~1400MPa and thickness of 2.0~25.4mm, which is widely used in machinery, coal, transportation and mining and all kinds of engineering construction and other required equipment, such as drilling machine, electric furnace, electric wheel dump, excavator, loader, bulldozer, hydraulic aerial cage, all kinds of lifting equipment and coal mine hydraulic support and other mechanical equipment.

     

    Delivery Standard:

    Type
    Grade
    Standard
    		 Application
    Engineering machinery steel
    LG600, LG700;
    LG600T/TE, LG700T/TE, LG800T;
    LG700T-GJ, GJ900T; LG600QT, LG700QT, LG700QT-GLC,
    LG800QT, LG900QT, LG960QT, LG1100QT, LG1300QT, LG1400QT
    		 Technical agreement Used for truck crane jib, turntable; main beam of special container, large engineering equipment structure, heavy vehicle structure, etc
    High strength structural steel
    Q460, Q500, Q550, Q620,
    Q690, Q800, Q890, Q960,
    Q1100, Q1300, Q1400
    GB/T 16270-2009
    GB/T 28909-2012
    		 Used for metal structure and welding structural parts of bridge, chemical, mining, construction machinery and other equipment

     

    Technical Parameters:

    Steel grade
    Thickness (mm)
    ReL（Mpa）
    Rm（Mpa）
    A（%）
    		 C 0°C，KV2(J)
    D -20℃，KV2(J)
    E -40℃，KV2(J)
    180° Cold
    bending
    		 Delivery state
    Q460C/D/E
    3~25
    ≥460
    550~720
    ≥17
    ≥34
    ≥47
    ≥47
    d = 2a
    		 As-hot-rolled
    Q550C/D/E
    2~16
    ≥550
    670–830
    ≥16
    ≥47
    ≥47
    ≥47
    d = 2a
    		 As-hot-rolled
    LG600/600T/
    600TE/600T-GJ
    /700TF*
    3~16
    ≥620
    690~880
    ≥17
    		  
    ≥47
    ≥27
    d = 2a
    As-hot-rolled
    as-tempered
    LG600QT
    3~25
    ≥600
    670~830
    ≥16
    		  
    ≥47
    ≥34
    d=3a
    		 As-quenched
    and tempered
    LG700/700T/
    700TE/700T-GJ
    3~12
    ≥690
    770~950
    ≥15
    		  
    ≥47
    ≥27
    d=3a
    		 As-hot-rolled
    as-tempered
    LG700QT/
    LG700QT-GLC
    3~25
    ≥680
    770~950
    ≥14
    		  
    ≥47
    ≥34
    d=3a
    		 As-quenched
    and tempered
    LG800T
    3~8
    ≥800
    ≥840
    ≥13
    		  
    ≥40
    ≥27
    d=4a
    		 as-tempered
    LG800QT
    3~25
    ≥800
    ≥850
    ≥12
    		  
    ≥47
    ≥34
    d=4a
    		 As-quenched
    and tempered
    GJ900T
    2~6
    ≥900
    ≥950
    ≥10
    		  
    ≥47
    		  
    d=4a
    		 as-tempered
    LG900QT
    3~25
    ≥900
    950~1150
    ≥10
    		  
    ≥47
    ≥34
    d = 6a
    		 As-quenched
    and tempered
    LG960QT
    2.5~25
    ≥960
    980~1150
    ≥10
    		  
    ≥47
    ≥34
    d = 6a
    		 As-quenched
    and tempered
    LG1100QT
    4~25
    ≥1100
    1200~1550
    ≥9
    		    
    ≥34
    d = 8a
    		 As-quenched
    and tempered
    LG1300QT
    4~25
    ≥1300
    1350-1700
    ≥8
    		    
    ≥27
    d = 8a
    		 As-quenched
    and tempered
    LG1400QT
    4~25
    ≥1400
    1450-1900
    ≥8
    		    
    ≥27
    d = 9a
    		 As-quenched
    and tempered
    LG700TF: -60℃, KV2 > 27 J
     

    Steel Grade Table

    Steel grade GB/T 1591-2018 GB/T 16270-2009 GB/T 28909-2012 EN 10149.2-1996 EN 10025.6-2019
    Q460C/D/E Q460C/D/E     S460MC  
    Q550C/D/E Q550C/D/E     S550MC S550Q/QL/QL1
    LG600/600T/ 600TE/600T-GJ Q620D/E Q620D/E   S600MC  
     
    LG600QT   Q620D/E/F   S600MC S620Q/QL/QL1
    LG700/700T/ 700TE/700T-GJ   Q690D/E   S700MC  
    LG700D/E-QT   Q690D/E/F   S700MC S690Q/QL/QL1
    LG800T   Q800D/E      
    LG800QT   Q800D/E/F      
    LG900T   Q900D/E      
    LG900QT   Q900D/E/F     S890Q/QL/QL1
    LG960QT   Q960D/E/F      
    LG1100QT     Q1100D/E   S1100Q/QL/QL1
    LG1300QT     Q1300D/E    
    LG1400QT          

     

    Product Features:

    Thickness tolerance: stricter than higher accuracy requirements of Table 5 in GB/T 709

    Uniformity of properties: quenched and tempered steel, tempered plate have more stable mechanical properties, and its property fluctuation of whole coil< 30MPa.

    Impact toughness *: quenched and tempered plate, tempered plate have a very low ductile-brittle transition temperature, and its impact toughness maintains good at -60℃ .

    Bending property: ultra-high strength steel has good formability, 960MPa high strength steel can meet the requirement for bending property of d=6a.

    Weldability: the preheating for LG1100QT ≤10mm is not required before welding with good weldability.

    Surface quality: pickling production line and pretreatment process are equipped; surface treatment can be carried out according to user needs. The surface perfection is good without hardening and dust after treatment.

    Plate shape * : the unflatness of quenched and tempered sheet, tempered sheet can be controlled ≤5mm/m in any direction; profile problem caused by cutting can be reduced by low internal
    stress: (1) For sheet shorter than 5000mm, its length of camber shall be less than 0. 1% mm of the total length after cutting; (2) for sheet within 5000-8000mm long, its length of camber ≤5mm; (3) for sheet within 8000-10000mm long, its length of camber ≤8mm.

    Packaging: We can provide ordinary packaging, exquisite packaging, exquisite packaging for export

    * Property varies slightly according to steel grade and specification

     

    Application Case:

    LG960QT, LG1100QT for crane jib, pump truck support

Keywords:

Hot-rolled, cold-rolled, hot-dip galvanized, silicon steel, steel pipes, steel structures

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