P420ML1 and P420ML2 are both thermomechanically rolled steel plates for pressure vessels and boilers, according to the EN 10028-5 standard. The key difference is their low-temperature impact toughness: P420ML1 is specified for impact testing at-40°C, while P420ML2 is specified for impact testing at-50°C. Both grades have a minimum yield strength of 420 MPa and good weldability.
Supplementary Technology: HIC Test | NACE MR0175 | Z15 | Z25 | Z35
Thickness: 6MM to 300MM,
Width: 1500mm to 4050mm,
Length: 3000mm to 15000mm
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P420ML2 Chemical Composition |
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Grade |
The Element Max (%) |
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C |
Si |
Mn |
P |
S |
Al |
N |
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P420ML2 |
0,16 |
0,50 |
1,70 |
0,020 |
0,015 |
0,020 |
0,020 |
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Nb |
V |
Ti |
Ni |
Mo |
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0,05 |
0,10 |
0,05 |
0,50 |
0,20 |
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Carbon Equivalent: Ceq = 【C+Mn/6+(Cr+Mo+V)/5+(Ni+Cu)/15】%
P420ML1 Chemical Composition
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Grade/ Material |
Element |
Composition( Max-A, Min-I) |
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DIN EN 10028-5 P420ML1 |
C |
A:0.16 |
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Mn |
A:1.70 |
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Si |
A:0.50 |
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P |
A:0.020 |
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S |
A:0.015 |
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Grade |
P420ML2 Mechanical Property |
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Thickness |
Yield |
Tensile |
Elongation |
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P420ML2 |
mm |
Min Mpa |
Mpa |
Min % |
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6-16 |
420 |
500-660 |
19% |
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16-40 |
400 |
500-660 |
19% |
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40-63 |
390 |
500-660 |
19% |
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P420ML1 Mechanical Properties
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Grade/ Material |
Tensile Test |
MPa |
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DIN EN 10028-5 P420ML1 |
Tensile Strength |
500-660 |
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Yield Strength |
I:420 |
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Elongation |
I:19% |
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Impact Test( if any) |
-40℃ |
