HIGH TENSILE STRENGTH STEEL PLATE

for Construction Machinery

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JFE-HITEN HIGH STRENGTH STEEL PLATES

JFE-HITEN 780LE

JFE-HYD 960LE

This lineup of high-tensile strength steel plate spans a tensile strength range from 590 to 980 N/mm2. JFE also offers two high-yield strength plate products, HYD960LE and HYD1100LE, for applications requiring even greater strength. The chemical composition of these products was carefully designed to ensure excellent weldability. This steel plate is guaranteed to maintain its toughness at low temperatures, making it suitable for construction machinery that needs to operate under extreme weather conditions. 

  • High-tensile strength steel plate lineup ranging in tensile strength from 590 to 980 N/mm2
  • Available in very high thicknesses, over 100 mm
  • HYD960LE and HYD1100LE high-yield steel is also offered for applications requiring exceptionally high strength
  • Excellent weldability
  • Guaranteed toughness at low temperatures -40°C

Results of y-groove weld cracking test on JFE-HITEN 780LE

No low-temperature cracking occurred, even at a preheat temperature of 25°C. The ability to reduce preheat temperature enables greater work efficiency.

Type/grade Thickness
(mm)		 Ceq.
(%)		 Tensile test Charpy impact test Heat
treat
ment
Yield strength
(MPa)
t(mm)		 Tenslie strength
(MPa)		 Test temperatrue
(℃)
t(mm)		 Energy
(J)
Standard
Series		 JFE-HITEN 590SA 6～40 ≦0.45 ≧450 590～710 ― ― CR
or
TMCP
JFE-HITEN 590SB -10(ｔ>12) ≧47
JFE-HITEN 590SL 6～32 ≦0.46 ≧450 590～710 -40(6≦ｔ≦36)
-20(ｔ>36)		 ≧27
32.1～50 ≧430 570～705
JFE-HITEN 690S 6～25 ≦0.50 ≧550 690～830 -10(ｔ>12) ≧47
JFE-HITEN 780S 6～50 ≦0.53 ≧685(ｔ≦75)
≧665(ｔ>75)		 780～930 -5(12<ｔ≦20)
-15(20<ｔ≦32)
-20(32<ｔ)		 ≧35 QT
50.1～100 ≦0.61
100.1～160 ≦0.70
160.1～203.2 ≦0.75 ≧610 700～850 -40
JFE-HITEN 980S 6～50 ≦0.65 ≧885 950～1130 -10(12<ｔ≦20)
-25(20<ｔ≦32)
-30(32<ｔ)		 ≧35 QT
LE
(high toughness series)		 JFE-HITEN 780LE 6～19 ≦0.40* ≧685 780～930 -40 ≧40 QT
or
TMCP
19.1～32 ≦0.43*
32.1～40 ≦0.47*
(Not yet officially
standardized but
can be ordered.)		 40.1～70 ≦0.65* ≧685(ｔ≦75)
≧665(ｔ>75)		 780～930 -40 ≧40 QT
70.1～160 ≦0.73*
160.1～203.2 ≦0.78* ≧610 700～850 ≧35
JFE-HITEN 980LE
(Not yet officially
standardized but
can be ordered.)		 6～50 ≦0.65* ≧900 940～1100 -40 ≧35 QT
50.1～100 ≦0.80* ≧830 880～1080
JFE-HYD 960LE 6～32 ≦0.64* ≧960 980～1150 -40 ≧27 TMCP
or
QT
32.1～50.8 ≦0.70*
50.9～63.5 ≧930 950～1120
JFE-HYD 1100LE 12～32 ≦0.70* ≧1100 1180～1500 -40 ≧27

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