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In welding, equivalent carbon content (C.E) is used to understand how the different alloying elements affect hardness of the steel being welded. This is then directly related to hydrogen-induced cold cracking, which is the most common weld defect for steel, thus it is most commonly used to determine weldability.
The carbon content of 304L (UNS 30403) is restricted to a maximum of 0.035%, which prevents sensitization during welding. Sensitization is the formation of chromium carbides along grain boundaries when stainless steel is exposed to temperatures in the approximate range of 480–820 °C (900–1,500 °F).
Structural steel welding - Welding of steel structures subject to high levels of fatigue loading AS/NZS 1554.6: Structural steel welding - Welding stainless steels for structural purposes AS/NZS 1554.7: Structural steel welding - Welding of sheet steel structures AS/NZS 3992: Pressure equipment - Welding and brazing qualification AS/NZS 4855
Stainless steel, due to having a more positive electrode potential than for example carbon steel and aluminium, becomes the cathode, accelerating the corrosion of the anodic metal. An example is the corrosion of aluminium rivets fastening stainless steel sheets in contact with water. [ 69 ]
Argon-oxygen blends with 1–2% oxygen are used for austenitic stainless steel where argon-CO 2 can not be used due to required low content of carbon in the weld; the weld has a tough oxide coating and may require cleaning. Hydrogen is used for welding of nickel and some stainless steels, especially thicker pieces. It improves the molten metal ...
This helps fuse the toe of the weld to the base metal. [4] The electrode composition depends upon the material being welded. Alloying elements may be added in the electrodes. Electrodes are available to weld mild steels, high carbon steels, low and special alloy steels, stainless steel and some of the nonferrous of copper and nickel. Electrodes ...