Performance of Lean Duplex Stainless Steel Stub Columns with Stiffener

2016 ◽  
Vol 857 ◽  
pp. 171-176
Author(s):  
K.C. Vidya ◽  
George M. Varghese
Keyword(s):  
Stainless Steel ◽  
Duplex Stainless Steel ◽  
Construction Industry ◽  
Nickel Content ◽  
Reinforcing Bars ◽  
Lean Duplex Stainless Steel ◽  
Wide Range ◽  
Stub Column ◽  
Stub Columns ◽  
Ansys Workbench

The stainless steel are employed in a wide range of structural application such as in bridges, storage tanks, reinforcing bars for concrete structure, etc. Among the various grade of stainless steel, austenitic grades are generally popular in construction industry which has nickel content 8-11%. The demand for a new form of a duplex stainless steel leads to the development of Lean Duplex Stainless Steel (LDSS), which has a low nickel content of about 1.5%. The paper is investigates the buckling performance of different shaped lean duplex stainless steel hollow stub column with stiffener. Also performance of LDSS stub column compared with concrete stub column. A non-linear static analysis of LDSS stub column was studied using ANSYS workbench.

Lean Duplex Stainless Steel Tubular Members Strengthened with CFRP Plate Subjected to Web Crippling

2012 ◽  
Vol 166-169 ◽  
pp. 1644-1656
Author(s):  
S. M. Zahurul Islam ◽  
Ben Young
Keyword(s):  
Stainless Steel ◽  
Duplex Stainless Steel ◽  
Failure Modes ◽  
Slenderness Ratio ◽  
Web Crippling ◽  
Lean Duplex Stainless Steel ◽  
Cfrp Plate ◽  
Wide Range ◽  
Carbon Fibre Reinforced Polymer ◽  
The Web

Lean duplex stainless steel tubular members are relatively new grade of material. An experimental investigation of lean duplex stainless steel tubular members subjected to web crippling is presented in this paper. The test specimens were strengthened with adhesive bonded carbon fibre-reinforced polymer (CFRP). The web crippling tests were conducted under End-Two-Flange, Interior-Two-Flange, End-One-Flange and Interior-One-Flange loading conditions. A total of 38 web crippling tests was conducted. The investigation was mainly focused on the effects of web slenderness of lean duplex stainless steel tubular sections on CFRP strengthening against web crippling. The lean duplex stainless steel type EN 1.4162 was used in the investigation. The tests were performed on five different sizes of square and rectangular hollow sections that covered a wide range of web slenderness ratio from 8.1 to 57.0. Three different failure modes were observed in the tests of the strengthened specimens, namely the adhesion, interlaminar failure of CFRP plate and combination of adhesion and interlaminar failure of CFRP plate. It is shown that the web crippling strength of lean duplex stainless steel tubular members may increase up to 76% due to the strengthening of CFRP.

ACI TYPE HN

Alloy Digest ◽  
1982 ◽  
Vol 31 (6) ◽  
Keyword(s):  
Stainless Steel ◽  
Corrosion Resistance ◽  
High Temperature ◽  
Steel Casting ◽  
Nickel Content ◽  
Heat Treating ◽  
High Temperature Corrosion ◽  
Temperature Performance ◽  
Wide Range ◽  
Iron Chromium

Abstract Type HN is an iron-chromium-nickel alloy containing sufficient chromium for good high-temperature corrosion resistance and with nickel content in excess of the chromium. This alloy has properties somewhat similar to the more widely used ACI Type HT alloy but with better ductility. Type HN is used for highly stressed components in the 1800-2000 F temperature range. It is used in the aircraft, automotive, petroleum, petrochemical and power industries for a wide range of components and parts. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as creep. It also includes information on high temperature performance and corrosion resistance as well as casting, heat treating, machining, and joining. Filing Code: SS-410. Producer or source: Various stainless steel casting companies.

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