Steel plate P355 series
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What does “NH” in P355NH mean? What does “GH” in P355GH mean? What does “NL1” mean in P355NL1? What does “M” in P355M mean? What does “ML1” mean in P355ML1? What does “Q” in P355Q mean? What does “QH” in P355QH mean? What does “QL1” in P355QL1 mean?
P355NH, P355NL1, and P355NL2 comply with the EN10028-3 standard; they are normalized weldable fine-grained steels, where NH, NL1, and NL2 indicate normalization at different impact temperatures. P355GH complies with EN10028-2 and is an alloy-free steel with high-temperature properties. P355ML1, P355M: Hot-rolled steel according to EN10028-5, class M, impact temperature L1
Thank you for your answer. I would like to ask what the full English spellings of these suffixes are?