The carbon is more attracted to the Titanium (Ti) and therefore it leaves the chromium alone. An even more effective way to reduce carbide precipitation is through the addition of Titanium (Ti) to the alloy to stabilize it. 304L SS is an example of such steel the “L” in 304L is for “Lower carbon” (.030% max vs.080% max for 304 steel). One of the ways to combat this phenomenon is to lower the carbon content in steel to decrease the carbide precipitation. The weld areas with temperatures 930☏ – 1470☏ are often called the carbide precipitation zone – in which Chromium (Cr) combines with Carbon (C) and precipitates chromium carbides at the grain boundaries significantly reducing corrosion resistance of steel in this zone. The difference appears when the issue of carbide precipitation in the heat-affected zone (HAZ) is discussed or fatigue strength and temperature are considered. When comparing the chemical composition of 321 SS and 304/304L SS, it is clear that the chromium (Cr) and nickel (Ni) ranges of these alloys are very similar. Note: To print this bulletin on the advantages of using 321 SS vs 304/304L SS, please click here.Īt first glance, it appears that type 304/304L SS is very similar to type 321 SS.
#321 stainless steel tubing free
Feel free to contact us today for a quote on any of your custom size orders. Here at Atlantic Stainless no inquiry is too large or too small. See specific product page for unique sizes. Ideal uses for 321 Stainless Steel include expansion joints, aircraft parts, furnace parts, heat exchangers, mineral processing screens, welding by all standard methods, with or without filler metal. Resistant to potable water with up to 200mg/L chlorides at normal temperature.
Excellent forming and welding characteristics.Iron, <0.08% Carbon, 17-19% Chromium, 9-12% Nickel, <2% Manganese, <1% Silicon, 0.3-0.7% Titanium, <0.045% Potassium, <0.03% Sulphurģ21 Stainless Steel Plate, 321 Stainless Steel Sheet, 321 Stainless Steel Round Bar, 321 Pipe Tube & Fittings This grade is not, however, recommended for welding consumable, as the titanium component does not allow good transfer of heat across a high-temperature arc.
Remarkably high strength as well as scaling resistance and phase stability set 321 Stainless Steel apart from other similar grades. The titanium within means the stainless steel is intergranular corrosion resistant after heating, (between 425-900 degrees Celsius).
This is a standard austenitic 18/8 stainless steel grade, (304), but stabilized by Titanium.
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