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Heat treatment and properties analysis of 08Ni3DR steel plate

1. 08Ni3DR steel plate implementation specification: GB/T 3531

2. 08Ni3DR steel description: 08: nominal carbon content is 0.08%, practical content does not exceed 0.10%; Ni3: Ni (nickel) nominal content is 3%, practical content is 3.25%-3.70% , DR means for low-temperature pressure vessel.

3. 08Ni3DR steel plate heat treatment status:
08Ni3DR steel plate is heat treated in the condition of off-line quenching + tempering. For the resistance of the steel, central heat treatment (secondary quenching) can also be carried out. For 08Ni3DR steel plates with a thickness of no more than 12mm, twice normalizing and tempering heat treatments can also be carried out. The tempering temperature of the 08Ni3DR steel plate is not less than 540℃.

4. Mechanical properties of 08Ni3DR steel plate:
Yield strength≥300Mpa
Tensile strength 480-610 Mpa
Elongation after breaking ≥21%
Zigzag diameter d=3a
Impact temperature -104
Smaller impact energy: 48J

5. 08Ni3DR steel plate chemical composition
C≤0.1, Si 0.15-0.35, Mn 0.3-0.8, P≤0.015, S≤0.005, Ni 3.25-3.7, Mo≤0.12, V≤0.05

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