Above 3 stainless steel grades are the 3 best stainless steel grades for machining industries. +8618675500537. Our Work. There are 33 material properties with values for both materials. What can I do for you? Type 304 is more machinable than 316 stainless steel. In most common alloys, you'll find 10% nickel and 2 to 3% molybdenum. 304 stainless steel contains 18% chromium and 8% nickel. This grade was designed to exhibit good machinability while having improved mechanical and corrosion resistance properties. 302 stainless steel grade is higher version of the grade 304. Martensitic stainless steel grades contain moderate levels of corrosion resistance, high hardenability and machinability, poor formability and can be welded with caution. However, it is the most difficult to machine among the commonly used stainless steels. 316 stainless steel contains molybdenum. Stainless Steel Grade 302: 302 is one of the most useful stainless steel grade for machining. Ft. Differentiating the Melting Points of 316 & 304 Stainless Steel. Austenitic Stainless is non-magnetic and non-hardenable. Not only is grade 304 steel easier to machine but it is easier to clean. This is a little tid-bit I found about the 6-4 Grade 5 titanium I found locally: Ti-6AL-4V (or Ti 6-4), this designation refers to its chemical composition of almost 90% titanium, 6% aluminum, 4% vanadium, 0.25% (max) iron and 0.2% (max) oxygen. 316 stainless steel is a specialty product used for specific purposes and its manufacturing process is more complex, both of which increase its cost. The difference derives from molybdenum. It is made up of almost the same materials as 304 stainless steel and has almost the same physical and mechanical properties. Cost: 304 stainless steel is usually available for a lower cost than 316 stainless steel. Type 316 is also austenitic, non-magnetic, and thermally nonhardenable stainless steel like Type 304. 316 Stainless Steel Contains a minimum of 16% chromium, 10% nickel and 2% molybdenum. A little research now saves you lead time and money later. Alternative 300-series grades can contain up to 7 percent molybdenum. The real distinction in the stainless steel 316 vs 304 SS comparison is the presence of molybdenum (2-3%) alongside the other alloying elements such as carbon, manganese, and silicon. 302. 321H stainless steel is the low-carbon version of 321, is the commonly used heat resistant steel, of which carbon content is slightly higher than 321 grades. Type 316 stainless steel in an environment of 25% phosphoric acid, and Figure 3 shows effects of temperature on Types 304 and 316 in very concentrated sulfuric acid. These alloys if added in the proper amounts will improve machinability, Se; Selenium, S; Sulphur, and L; Lead. Their formability, strength and machinability are different. The difference between them is the presence of the above-mentioned molybdenum in 316-grade steel, which 304 steel doesn't have. Following SAE 304, SAE 316 grade stainless steel is the second most common in commercial use today. They have 81% of their average alloy composition in common. 304 stainless steel is also celebrated for its excellent machinability and formability. Portfolio; Case Studies; Connect; Blog; 304 vs 316 Stainless Steel. So its degree of corrosion resistance is higher than the 18-8 series stainless steels. Welding, however, doesn't work well with 303. China 304 Vs 316 Stainless Steel Machinability Manufacture, Visit Here to Find the 304 Vs 316 Stainless Steel Machinability That You are Searching for. 304 is often seen in household and industrial applications like sinks, refrigerators, fasteners, pipes, heat exchangers, and structures in environments where carbon steels would rust. . You can expect to pay about 1.6 times more for 316 vs 304 SS. Applications of 303 Stainless Steel At Bergsen Metals, we provide an inventory of stainless steel products, including 304/304L stainless steel, 316/316L stainless steel, and more. It contains 0.03 maximum carbon content and molybdenum in its composition. - Heat Resistance. Properties with values for just one material (3, in this case) are not shown. SAE 304 SS vs. SAE 316 SS and how to choose between them, considering corrosion in various solutions and degradation. That is also why it is used on surfaces that are visible to the public. While there are no visible differences between 304 and 316 stainless steel, there are distinctive chemical differences - the most crucial difference being their chemical compositions. While the 316 is hard to machine and hard to clean it does not catch rust and other surface corrosion easily. The 316 stainless steel has 2-3% molybdenum added. The melting point of 304 stainless steel is higher than its 316 stainless steel counterpart, ranging between 2,550 - 2,650 F or 1399 - 1454 C. This is a prime example of how the price of stainless steel grades can fluctuate based on the ebb and flow of the raw material cost. Generally, 316 stainless steel is higher in price versus 304 stainless steel. This means that SS 316 is more suitable for making products subjected to more force than SS 304. SS 316 is better than SS 304 in terms of corrosion resistance, heat resistance and certain properties, but the price is higher than AISI 304, for more details, please check stainless steel grade 304 vs 316, and 316 vs 316L. Use 304 When: . These reasons serves differently in different applications. 304 Stainless is a Group C Austenitic Chromium-Nickel alloy that might also contain Titanium, Molybdenum, and other alloying elements. . On average, 316 stainless steel costs 20 - 30% more than 304 . Grade 304 stainless steel, also known as A2 stainless steel, contains 18% to 20% chromium and 8% to 10% nickel, and grade 316 or A4 stainless steel contains about 16% chromium, 10% nickel and 2% to 3% molybdenum. Machinability Ratings - Stainless. The main difference between 304 and 316 stainless steel is the fact that 316 stainless contains a significantly increased amount of molybdenum. However, considering the price of replacing an entire process line, plus manufacturing downtime, these costs are insignificant. Per Min. Both types 304 and 316 are easily welded and formed. % Relative Speed Based on B-1112 as 100% (165 SFM) 302 302/304 "B" 303 303 High Tensile 304 304 L 309 310 316 316 "B" 316 L 317-317 L 321 330 347 403 410 416 Ann 416 H.T. This gives the 316 steel much more corrosion resistance against chloride solutions such as those found in heavy-duty industrial processing environments and chemical solvents. This additive makes gives 316 very good heat and corrosion resistance. This low carbon content reduces the effect of carbide precipitation during sheet metal fabrication processes such as welding. Type 316 has lower formability than 303 or 304 stainless steels, but its higher resistances make it more expensive to source. 303 &. At the time of publication, a sheet of 6"x6"x1/4" 304 SS costs $28.55 while the same size sheet of 316 SS costs $46.72. In general, stainless steel naturally resistant to corrosion. Machining 304 Stainless Steel 304 stainless steel (also called 18/8 stainless steel) is an austenitic steel alloy with a minimum chromium content of 18%. While 316 comes in second in the quantities sold, it provides highly superior resistant oh corrosion to acids and chlorides. The key difference between 316 and 316L stainless steel is the carbon content. The key difference is the addition of molybdenum, an alloy which drastically enhances corrosion resistance, especially for more saline or chloride-exposed environments. 316F - Free-machining grade for automatic machine screw parts as well as . The same as 304, stainless steel 316 also cannot be hardened by heat treatment. The most weldable stainless steels are typically in the austenitic group. This increase in molybdenum results in increased corrosion resistance. Type 304 stainless steel possesses excellent corrosion resistance and toughness but is subject to pitting in warm chloride-based atmospheres. Save up to 60% on Select Carbon Steel Sheet/Plate Today! It provides additional corrosion resistance, high flexibility, superior appearance and abrasion resistance. 316 stainless steel has better corrosion resistance than 06Cr19Ni0 in seawater and other media. Check out our 304 product guide with more chemistry information and mechanical data. Cutting Speeds Recoendations for 300 Series Martensitic Stainless Steel What distinguishes Type 316 from Type 304 is the addition of molybdenum up to a maximum of 3%. 0.1-3mm dia sphere for example) can be attracted to powerful magnetic separators positioned in the product stream. When welding austenitic stainless steels, grades such as 304L or 347 should be used. The most widely used stainless steel is the 304 type, comprised of 18% chromium and 8% nickel. Pros and Cons of 304 Stainless Steel. While 304 is an economical and practical choice for most environments, it doesn't have the corrosion-resistance of higher quality 316 stainless steel. Tests should cover condi- The weldability of 304 vs. 316 stainless steels depends on their carbon content. The carbon content is held to 0.08% maximum, while the nickel content is increased slightly. A few percentages this way or that in chromium and nickel. The addition of this transition metal increases 316's corrosion resistance and also imparts high heat resistance of up to 1600F. 440c Stainless Steel Fasteners; CNC Machining Aluminium Parts . 302 stainless steel grade is manufactured with high heat working and cold . 316 stainless steel is typically more expensive than 304 because of its increased nickel content and the addition of molybdenum. Use 316 When: You are in a marine or corrosive environment. Download Download PDF. 316 stainless steel contains molybdenum, but 304 does not. 316l stainless steel or officially known as Grade 316l has a lower carbon content compared to 316 stainless steel. This helps resist corrosion to chlorides (like seawater and de-icing salts). It boasts a respectable level of resistance to corrosion, and is much easier to mold than its 316 stainless steel alternative. Grade 304L has lower carbon while 347 has niobium stabilizers added to it which help to deter intergranular corrosion. The low carbon content combined with high chromium/nickel/molybdenum amount results in soft material with high resistance to machining and a low machinability rating of 40%. The simple answer is 304 contains 18% chromium and 8% nickel while 316 contains 16% chromium, 10% nickel and 2% molybdenum. The main difference is that 316 stainless steel has between 2% and 3% molybdenum in it. We discuss and compare stainless steel 304 and stainless steel 316 materials for CNC machining. 316 stainless steel or 316 SS is the second most popular austenitic grade of stainless steel, and it comprises iron, 10-14% nickel, and 16-18% chromium. 304, by contrast, is the standard stainless steel in most industries and is widely available at a lower cost. Yield strength is the maximum force you can apply to the metal before it changes shape permanently. AISI 304 . 304 can withstand corrosion from most oxidizing acids. The 304 vs 316 stainless steel machinability is favorable for the 304 material. The main difference between 304 and 316 is that 316 contains a significant content of molybdenum (Mo). Depending upon their weight and specifically their weight ratio to magnetic attraction, these small . This type of steel can be used in a variety of applications such as gas turbines, aerospace, and power generation. 304 Stainless Steel Comprising 18% chromium and 8% nickel, type 304 stainless steel is sometimes referred to as 18/8. Hardness Now to the question of 304 vs. 316 stainless steel; while both are good for corrosion resistance . Type 304 stainless doesn't harden with heat treatment and is not a free-cutting material, making it less than ideal for use in machining. The machinability grade of 316 steel is 60, while the machinability grade of 316B is 50, and the machinability grade of 304 and 304L grades is the same, both are 70. And its machinability at least partially makes up for the difference. . As a result of these properties small particles (approx. Think car fenders and stainless steel serving trays. The most common form of 304 stainless steel is 18-8, or 18/8, stainless steel, which contains 18 percent chromium and 8 percent nickel. Compared to 304, 316 contains a minimum of 16% chromium (Cr), 10% nickel (Ni) and 2% molybdenum (Mo). 304 vs 316 stainless steel machinability. Properties of 316L Stainless Steel Grade 302 302/304 "B" 303 303 High Tensile 304 304 L 309 310 316 It has a machinability level of 150 and a baseline machinability level of 100. 304 stainless steel is the most widely used stainless and heat-resistant steel, which is used in food equipment, general chemical equipment, atomic energy industry and so on. Post-welding, 316 stainless steel parts require annealing to avoid corrosion. Posted by Max Gulden on Feb 16, 2017 4:02:00 PM Find me on: LinkedIn. In comparison to grade 304, stainless steel 316 is more prone . . Grade 304 Stainless Steel. The key difference between 304 vs 316 stainless steel that makes them different is the addition of molybdenum, an alloy that drastically enhances corrosion resistance, especially for more saline or chloride-exposed environments. The main difference between 304 and 316 stainless steel is the fact that 316 stainless contains a significantly increased amount of molybdenum. 303 Stainless Steel. 304 stainless is a more affordable and machinable product than 316 stainless. They are similar in corrosion resistance, strength, hardness and welding performance, but 321 is mostly used in the heat resistance condition of 500-600 . Most stainless steel handed down around the world is Grade 304. Both alloys have 0.08% carbon content. The main difference between 316 and 304 stainless steel is that 316 contains an increased amount of molybdenum [4]. Contact Now . The difference between 304 and 316 stainless steel is the incorporation of molybdenum of 316 reaches up to 3%. 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