NK DH36 is a high-strength structural steel for hull, where D represents mass grade D, H represents high-strength building materials, and 36 represents its maximum compressive strength. This steel is widely used in shipbuilding, Marine engineering and other fields, because of its excellent strength, toughness, welding properties and corrosion resistance, in ensuring the safety and stability of the relevant structure plays an important role.
Chemical composition of NK DH36:
Carbon (C) content: ≤0.18
Silicon (Si) content: ≤0.50
Manganese (Mn) content: 0.90-1.60
Phosphorus (P) content: <0.025
Sulfur content: <0.025
Copper (Cu) content: ≤0.35
Chromium (Cr) content: ≤0.20
Nickel content: ≤0.40
Niobium (Nb) content: 0.02-0.05
Vanadium (V) content: 0.05-0.10
Titanium (Ti) content: <0.02
Molybdenum (Mo) content: ≤0.08
Aluminum (ALS) content: ≥0.015
Mechanical properties of NK DH36:
Upper yield strength (MPa) : ≥355
Tensile strength (MPa) : 490-630
Elongation after breaking (A%) : ≥21 (or, depending on the latest information, may not be less than 22%)
Test temperature (℃) : -20
Uses of NK DH36:
NK DH36 steel is widely used in many fields because of its high strength, high toughness, fatigue resistance, corrosion resistance, impact resistance, wear resistance, weather resistance and other excellent properties. For example, automobile manufacturing, solar energy, metal products, household appliances, precision electronics, containers, machinery manufacturing, elevators, sanitary ware, rail transit, pressure vessels, architectural decoration, nuclear power, catering kitchenware, chemical equipment, daily appliances, edible machinery and structural pipe making. Especially in the field of shipbuilding and offshore engineering, NK DH36 steel is often used in the manufacture of large ships and offshore oil, drilling platforms, etc., to cope with the harsher Marine environment.
