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  • A709 Grade HPS 70
  • A709 Grade HPS 70W

A709 Grade HPS 70W

  • 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
High strength low alloy steel plate ASTM A709 Gr.HPS 70W owned the minimum yield strength at 485 Mpa and tensile strength between 585Mpa and 760Mpa.So steel plate A709Gr.HPS 70W is mainly used under high strength situiations outside or bad weathering owned its weathering resistance property.Now Xinsteel cooperated with Wuyang iron and steel to offer the maximum thickness of A709 Gr.HPS 70W till 350mm with DNV approved which can be also used in oil and offshore platform.
■ 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 HPS 70W low alloy steel:

Yield strength (≥Mpa) Tensile strength (Mpa) Elongation in ≥,%
485 585-760 200mm 50mm
... 19

Chemical composition for A709GrHPS 70W low alloy steel (Heat Analysis Max%)

Main chemical elements composition of A709GrHPS 70W
C Si Mn P S Ni Cr Cu V Mo Al N
0.11 0.30-0.50 1.10-1.35 0.02 0.006 0.25-0.40 0.45-0.70 0.25-0.40 0.04-0.08 0.02-0.08 0.01-0.04 0.015

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