About Duplex 2304 Stainless Steel Rebar

Stainless steel is divided into martensitic steel, ferritic steel, austenitic steel, duplex stainless steel and precipitation hardening stainless steel. Among them, the most suitable steel for concrete structure is duplex stainless steel. Duplex stainless steel is a ferritic and austenitic phase co-existing steel with excellent mechanical properties and resistance to chloride stress corrosion. In the past ten years, the maturity of duplex stainless steel smelting technology, while the cost continues to reduce, the performance has gradually improved, and the application of stainless steel reinforcement has changed the direction of development.

Duplex stainless steel is commonly 2205, 2304, etc., of which 2304 is the most widely used stainless steel bar for concrete structures. First of all, 2304 contains 23% chromium metal and 4% nickel metal, which will form a self-healing chromium-rich oxide film on the surface of the steel bar, ensuring strong corrosion resistance. At the same time, the yield strength of 2304 after process adjustment reached 600MPa, and it also performed well in other aspects such as elongation and elastic modulus. The most critical is that the price of 2304 is lower than 2205 and 316, etc., which can show a better life cycle cost while reducing the dependence on nickel and molybdenum resources. Therefore, duplex stainless steel has become the trend of current use.

Composition of 2304 Stainless Steel

Mechanical Properties of 2304 Stainless Steel

Why you choose Duplex 2304 Stainless Steel Rebar

Stainless steel reinforcement has been widely used in the industry, and its performance and application have been recognized by many owners and designers. In terms of price concerns, the 2304 grade of duplex stainless steel bar is much lower than the traditional 316 grade of stainless steel, the cost is closer to 304 stainless steel, and its performance has obtained a better comprehensive high score. Although the price is 4-5 times the price of general carbon steel bars, it is only used in some areas, and the service life can reach more than 120 years. The use of stainless steel bars can save high maintenance costs, even reconstruction costs, reduce the cost of other anti-corrosion additional measures, and reduce the impact on traffic during maintenance. If you want to control costs, you can use stainless steel reinforcement on key structural components, and the total cost of the project is only increased by about 2%, but it can fundamentally ensure that the whole life cycle cost is greatly reduced.

Products Picture