QT-100 (ASTM A514) AR400

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QT-100 (ASTM A514) AR400

ASTM A514 specification covers quenched and tempered alloy steel plates primarily for use in welded bridges and other structures. This type of steel is suitable for:

  • Construction of heavy vehicle frames and support structures, 
  • Welded bridge structural components
  • Transport trailers and agricultural equipment


Some A514 steels have a corrosion resistance that is 4 to 6 times better than plain grade steels.

Mechanical PropertiesMetric
Tensile Strength (to 3/4″)115 to 135 ksi
Tensile Strength, Yield
100 ksi min

18% min in 3/4″

17% min in 4″