Tableware, cooking utensils, food processing equipment, food preparation and mild chemical applications use this stainless steel. 904 is more corrosion resistance to chlorides (as in salt water) than 316. The scoring shown on the Type 316 … Both have the same general characteristics of the 300 series. It can be made magnetic. 400-Series Stainless Steel It has one of the highest attainable hardnesses of the corrosion and heat resisting grades. Since the pictured 440C parts work alongside other metal components inside a valve assembly, and friction is involved, the customer did not want to risk corrosion inhibiting the function of the components. 303 Stainless Steel. This grade is magnetic at all times. Of the five materials, 440C stainless steel has the highest specific strength, followed by 4130 alloy steel, 7075-T6 aluminum, and 2024-T3 aluminum. However, in some applications, 316(L) can be used for ball bearings, given it isn't a high load or high rpm application. Due to the lack of carbon, it isn't as hard, or resistant to abrasion/indentation as 440c. All three resist rust well, with 440A being the most rust resistant, and 440C … 440C is an excellent, high-end stainless steel, usually hardened to around 56-58 Rc. Type 420 (472) 3 (21) Type 201 (202) vs. 316 stainless is more resistant to atmospheric and general corrosive conditions than any of the other standard stainless steels. Type 301 (169) 50 + (345) Type 440C (600) vs. Stronger than the 440A group of stainless steels as a result of higher carbon content, 440C is a high-chromium stainless that has excellent hardness properties. Bearing-Quality 440C Stainless Steel One of the hardest types of stainless steel after heat treating, 440C offers excellent wear and abrasion resistance. For those applications where superior machinability is desired and where slightly lower corrosion resistance is satisfactory 440C … NITRONIC 60 (205) vs. Stainless steel is famous for its corrosion resistance, fire and heat resistance, hygiene, and high strength-to-weight properties. 316 stainless … 303 is a non-magnetic austenitic stainless steel … This is in part due to twice the nickel content of 316 (23-28%), the element that causes people to be allergic to stainless. Slightly less corrosion resistant than 440A, 440C … Type 201 (202) 20 (137) Button at left is Type 316 stainless steel tested against Type 304 at only 3,000 psi (21 MPa). Stainless Steel Grades: 303 – 304 – 420 – 440 – 440C . The L denotes a lower carbon content in Stainless, for 304/316… Passivation is risky specifically when it comes to 440C and 416 Stainless Steel … It's often used for bearings, valves, and knife blades. The 304 grade is the most commonly used stainless steel, and the 316 grade is the second most common. 440 A - 440 B - 440C stainless steel The carbon content (and hardenability) of this stainless steel goes up in order from A (.75%) to B (.9%) to C (1.2%). 316 is more "stainless" than 440 and most stainless of the 300 series, also nonmagnetic - better choice than 440. 440C is a hardenable chromium steel. KMS Bearings Inc. manufactures radial ball bearings utilizing type 316 stainless which provides superior corrosion resistance when compared to conventional steel and 440 stainless bearings.
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