LR Grade EH42 is a high-strength, normalized rolled shipbuilding steel plate certified by Lloyd's Register (LR). The "EH" denotes its exceptional high-strength properties, while the "42" indicates a minimum yield strength of 420 MPa. This steel is specifically designed to meet the rigorous demands of modern shipbuilding and offshore structures, offering an excellent combination of strength, toughness, and weldability.
Chemical Composition
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LR EH42 extra high Strength Chemical Composition |
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Grade |
The Element Max (%) |
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|
C |
Si |
Mn |
P |
S |
Al |
N |
|
|
LR EH42 |
0.20 |
0.55 |
1.70 |
0.030 |
0.030 |
0.015 |
0.020 |
|
Nb |
V |
Ti |
Cu |
Cr |
Ni |
Mo |
|
|
0.02-0.05 |
0.03-0.10 |
0.02 |
|
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|
|
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Mechanical Property
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LR EH42 extra high strength property |
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Grade |
|
Mechanical Property |
Charpy V Impact Test |
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Thickness |
Yield |
Tensile |
Elongation |
Degree |
Energy 1 |
Energy 2 |
|
|
LR EH42 |
mm |
Min Mpa |
Mpa |
Min % |
-40 |
J |
J |
|
t≤50 |
420 |
530-680 |
20% |
28 |
42 |
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|
50＜t≤70 |
420 |
530-680 |
20% |
28 |
42 |
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|
70＜t≤100 |
420 |
530-680 |
20% |
28 |
42 |
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|
Note: Energy 1 is transverse impact test, Energy 2 is longitudinal |
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Other Name
LR Grade EH42 Shipbuilding steel plate,
LR Grade EH42 Ship steel plate,
LR Grade EH42 Marine steel plate,
LR Grade EH42 steel plate .
Additional Condition
UT(Ultrasonic examination), AR(As Hot Rolled only), TMCP(Thermal Mechanical Control Processing), N(Normalized), Q+T(Quenched and Tempered),Z Direction Test(Z15,Z25,Z35), Charpy V-Notch Impact Test, The Third Party Test (such as SGS Test), Coated or Shot Blasting and Painting.
