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  • A709 Grade 50
  • A709Gr50

A709 Grade 50,A709Gr50T

  • Steel Standard: ASTM A709/A709M
  • Rolling Type: High strength low alloy steel plate,Bridge steel plate
  • Thickness: 6mm-300mm
  • Width: 1500mm-4200mm
  • Length: 3000mm-18000mm
  • Heat Treatment: AR/Control-rolled/TMCP/QT
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■ Overview
ASTM A709GR.50 steel plate is a kind of low alloy structural steel which is for building bridges in normal constructions.For a better weathering resistance,generally steel plate A709 Grade 50W is better used for outside situiations.When rolling these steel materials A709 Grade 50,for each reduction of 0.01% below the specified carbon maximum,an increase of 0.06 manganese above the specified maximum will be permitted up till maximum of 1.35%.Xinsteel’s engineers suggest customer choose low temperature impacting test for steel plates A709 grade 50 at zero centigree,because these steel plates A709Gr50 normally used in this temperature.
■ Full Data
Technical Requirements & Additional Services:
♦ High tension test
♦ Low temperature impacting test
♦ Simulated post-welded heat treatment (PWHT)
♦ Issued Orginal Mill test certificate under EN 10204 FORMAT 3.1/3.2
♦ When cooper steel is specified for A709Gr36,the content Cu≥0.20%
♦ Shot blasting and Painting,Cutting and welding as per end user’s demands 
■ Techicals

Mechnical property for A709 Grade 50 low alloy steel:

Yield strength (≥Mpa) Tensile strength (≥Mpa) Elongation in ≥,%
345 450 200mm 50mm
18 21

Chemical composition for A709Gr50 low alloy steel (Heat Analysis Max%)

Main chemical elements composition of A709Gr50
Thickness(mm) C Si Mn P S Cu (Min)
T≤10 0.23 0.40 0.50-1.35 0.04 0.05 0.20
10<T≤40 0.80-1.35
40<T 0.15-0.40

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