ASTM A1066 Grade 345

ASTM A1066 Grade 345 introduction

High-Strength Low-Alloy Structural Steel Plate Produced by Thermo-Mechanical Controlled Process (TMCP)

ASTM A1066 Grade 345 general

Property Temperature Value Comment
Charpy impact energy, V-notch -23 °C Charpy impact energy, V-notch of 48 J average
Elongation - Elongation of 16 - 18 % -
Tensile strength - Tensile strength of 520 MPa min.

ASTM A1066 Grade 345 chemical

Property Value Comment
Aluminium Aluminium of 0.02 % min, total
Boron Boron of 0.002 % max.
Carbon Carbon of 0.16 % max.
Chromium Chromium of 0.3 % max.
Copper Copper of 0.35 % max.
Manganese Manganese of 0.8 - 1.7 % -
Molybdenum Molybdenum of 0.2 % max.
Nickel Nickel of 0.7 % max.
Niobium Niobium of 0.05 % max.
Phosphorus Phosphorus of 0.03 % max.
Silicon Silicon of 0.15 - 0.5 % -
Sulfur Sulfur of 0.02 % max.
Vanadium Vanadium of 0.08 % max.

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