Stainless Steel Supplier in rajkot Gidc

Alloy 303 is a non-magnetic, austenitic stainless steel that is not hardenable by heat treatment. It is the free machining modification of the basic 18% chromium / 8% nickel stainless steel. Alloy 303 was specially designed to exhibit improved machinability while maintaining good mechanical and corrosion resistant properties Due to the presence of sulfur in the steel composition, Alloy 303 is the most readily machineable austenitic stainless steel; however, the sulfur addition does lower Alloy 303’s corrosion resistance to below that of Alloy 304. Like other austenitic grades, Alloy 303 demonstrates excellent toughness, although the sulfur does reduce this a little as well.

Applications

Alloy 303 is frequently used in applications that require parts to be heavily machined. Some examples include:

• Nuts and bolts
• Aircraft fittings
• Gears
• Screws
• Shafts
• Electrical switchgear components
• Bushings

TYPE 304 is the fundamental alloy of the austenitic class. It is commonly known as “18-8”; 18% chromium; 8% nickel; and it is the most commonly used of all the stainless grades. Type 304 is non-heat treatable, but cold working considerably increases both its hardness and tensile strength. Type 304 in the cold state offers great versatility of workability because of its toughness and ductility and can be rigorously spoun, rolled, drawn or machined. It offers outstanding weldability. It is extremely resistant to corrosion, and retains and untarnished silvery surface. It is also resistant to heat oxidation drawback of Type 304 is that of sensitization-under extreme conditions, carbide precipitation may occur. Type 304 alleviates this problem by decreasing the carbon content and there by eleminating the possibility of intergranular corrosion. This low carbon alloy is most often utilized for applications requiring welding.

Type 310 is an austenitic heat resisting alloy with an excellent resistance to oxidation under mildly cyclic conditions to 2000F. Rapid thermal cycling increase the rate of metal wastage somewhat by spalling of the protective oxide scale. The oxidation resistance of AI. 310 is significantly better than that of AI. 309.

The chromium content of AI. 310 provides resistance to Aqueous corrosion under oxidizing conditions. AI. 310 is susceptible to chloride ion stress corrosion cracking but is superior in this respect to the lower alloy stainless 304 and the lower alloy stainless 304 and 316.4.5 AI. 310 has fair resistance to polythionic acid attack. Resistance to intergranular attack of material intended for service in the 850 to 1000F range may be improved by thermal stabilization at 1550-16500F for four hours.

Type 316 is an electric furnace processed modification of Type 302: it contains 18% chromium, 8% nickel; and 2.3% molybdenum. This addition of molybdebnum increases both the corrosion resistance and the high temperature strength of this alloy. This most outstanding advantage of this addition is the increased corrosion resistance to reducing acids and pitting or pin hole corrosion. In general, Type 316 is known as the major all round corrosion resistant austenitic stainless steel available. Under extremely elevated temperatures, Type 316 proves itself to possess remarkable creep and rupture strength. This non-heat treatable, non-magnetic alloy posses excellent cold forming and drawing properties, making it suitable for a wide range of applications. Type 316L is an w carbon modification of Type 316 recommended for use during welding operations. The low carbon factor eliminates the possibility of harmful carbide precipitation in the 800F to 1500F range.