Difference between DNV E36 and DNV E32

DNV E36 is a stronger, high-yield steel than DNV E32, used for more demanding marine structures, offering higher strength (around 360 MPa yield) and impact toughness at lower temperatures, while E32 is a common strength steel (around 315 MPa yield) for general shipbuilding, with E36 typically requiring better low-temp performance (e.g., -20°C vs. -30°C or lower for E32). The "36" and "32" refer to minimum yield strength (in MPa), and the "E" denotes suitability for extreme low temperatures, with E36 having superior cryogenic properties for harsher offshore/Arctic use.

Chemical Composition

Mechanical Property

Application:
E32: General shipbuilding, bulkheads, decks.
E36: Higher strength demands in shipbuilding, offshore platforms, mobile units, harsh environments.
Toughness (Charpy Impact):
E36: Better low-temperature impact toughness (often tested at -20°C or lower) for colder conditions, according to DNV rules.
E32: Standard low-temperature toughness (e.g., -30°C).
Classification: Both are part of the DNV family (now merged with GL, often VL/DNV-GL), with the letter prefix (A, D, E, F) indicating suitability for different applications, but the number is the key strength difference.
In Simple Terms: Think of E36 as the tougher, stronger big brother to E32, built to withstand colder, more demanding offshore or Arctic conditions in ships and structures.