22SiMn2TiB armor steel,code 616.It is a kind of martensite heat-resistant high-strength special steel.It has excellent gun resistance,strong destructive impact resistance,uniform and stable performance,good shape and surface quality.It has high comprehensive mechanical properties at high temperature.It is used to manufacture high temperature structural parts and protective devices.ITEM C616.7903 4 STEEL BOLLARDS DESCRIPTIONITEM C616.7903 4 STEEL BOLLARDS DESCRIPTION The work shall consist of installing steel bolla rds as shown on the plans and as directed by the ENGINEER.MATERIAL Steel bollards shall be 4 outside diameter,6.5 meters long,new galvanized steel pipe with steel acorn caps,painted yellow.Paint shall conform to Rustoleum - yellow,or
moderately high embodied cost.It has better strength that of stainless steel 403 at a higher temperature.TYPE 422 WND 1.4935 AISI 616 GRADE 616 UNS S42200 Carbon Manganese Molybdenum Chromium Silicon Sulfur Nickel Tungsten Mechanical Properties SS 202 0.2% Yield Strength Mpa(min) Reduction in Area,% Type 422,WNR 1.4935,UNS S42200,AISI 616
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