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ASTM A709-50W Atmospheric Corrosion Resistance Steel

ASTM A709-50W Steel Grade: ASTM A709M HPS50W Steel Sheet
Standard: ASTM
Thickness: 1.2-150mm
Width: 1220-4200mm
Length: 5000-18000mm

What is ASTM A709M HPS50W ?
ASTM A709 HPS50W  is American standard specification for for structural steel in bridge with hot rolled processing. Therefore, it is widely used in bridge constructions to atmospheric corrosion resistance. Furthermore, ASTM A709-50W covers high strength, low allow steel structural shapes, plates and bars. The atmospheric corrosion resistance of this steel in most environments is substantially better than carbon steel with or without copper addition. ASTM A709-50W shall have an atmospheric corrosion index of 6.00 or higher.
It is a copper chromium alloy steel – this alloy displays a greater level of resistance to atmospheric weathering when compared to other unalloyed steels. Its chemical composition promotes the early formation of an adhering protective layer of rust when exposed to the elements.

ASTM A709M HPS50W Chemical Composition
Steel Grades C max Si max  Mn P max  S max Cu max Cr max Ni max V max Nb max Al min
A709M HPS50W - - - 0.035 0.035 - - - - - 0.020

ASTM A709M HPS50W Mechanical Properties
A709 Grade Thick mm Yield [MPa]  Tensile [MPa] Elongtation Min % Reduction Min %  HB
Steel Plate Structural steel
8in[200mm] 2in[50mm] 8in[200mm] 2in[50mm]
≤100 345min 485min 18 21 18 21J  

ASTM A709M HPS50W Application
The mechanical characteristics and the resistance to atmospheric corrosion make this steel, the best product for the fabrication of agricultural vans and railway wagons, structures of bridges, water pipes, fans, chimneys and boilers.
The material forms its own protective layer when exposed to atmospheric elements. Essentially, the top layer corrodes protects the steel beneath it. The natural finish does not normally requires any form of maintenance such as painting, which makes the material a highly cost effective alternative to other structural steels.
Mainly used for construction of tanks, containers, bridges, frame structures, vehicles, etc with the request of welded, bolted, etc.

ASTM A709M HPS50W Service
These plates are in a variety of sizes and thicknesses, and are available as ex–stock or directly shipped from the mill. As with all our steels, our plates come with mill test certification, stampings and fully traceable. We can arrange for a variety of tests to be performed on the material if specified.