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The main difference between 304 vs 316 stainless steel is that 304 does not contain molybdenum, while 316 contains 2-3% molybdenum and less chromium and more nickel. The addition of molybdenum provides pitting resistance in phosphoric acid, acetic acid and dilute chloride solutions and provides corrosion resistance in sulfurous acid. AISI 304 ...
The various other elements present though have an impact on the properties and characteristics and ultimately, cost. 316 contains a minimum 2.0% molybdenum which makes it much more corrosion resistant than 304 however, as it is a more expensive element, generally makes 316 a more expensive grade of metal.
There are various stainless steel grades, with 304 and 316 being among the most widely used due to their excellent properties and versatility. What is 304 Stainless Steel. 304 stainless steel is composed of approximately 18% chromium and 8% nickel, which gives it excellent corrosion resistance and formability.
- 304 vs 316: What Makes Them So Popular?
- How Are They categorized?
- Properties of 304 Stainless Steel
- Properties of 316 Stainless Steel
- 304 vs 316 Stainless Steel: Heat Resistance
- Price Difference of 304 Stainless Steel vs 316
- 316 vs 304 Stainless Steel: Which Is Better?
The high levels of chromium and nickel found in 304 and 316 stainless steel provides them with a strong resistance to heat, abrasion, and corrosion. Not only are they known for their resistance to corrosion, they are also known for their clean appearance and overall cleanliness.
The five classes of stainless steel are organized based on their crystalline structure (how their atoms are arranged). Out of the five classes, 304 and 316 stainless steel are in the austenitic grade class. The structure of austenitic grade stainless steels makes them non-magnetic and prevents them from being hardenable by heat treatment.
304 Stainless Steel Applications
The medical industry commonly uses 304 SS because it endures the powerful cleaning chemicals without corroding. As one of the few alloys that meets the Food and Drug Administration’s sanitary regulations for food preparation, the food industry often uses 304 SS.
Chemical Composition
316 contains many similar chemical and mechanical properties as 304 stainless steel. To the naked eye, the two metals look the same. However, the chemical composition of 316, which is made up of 16% chromium, 10% nickel, and 2% molybdenum, is the main difference between 304 and 316 stainless steel.
Applications of 316 Stainless Steel
The addition of Molybdenum in 316 makes it much more corrosion resistant than similar alloys. Due to its superior resistance to corrosion, 316 is one of the staple metals for marine environments. 316 stainless steel is also utilized in hospitals because of its durability and cleanliness. Fun fact: The Chicago Bean is made from 316 stainless steel!
Common Applications:
1. Water-handling: boilers, water heaters 2. Marine parts- boat rails, wire rope, boat ladders 3. Medical Equipment 4. Chemical processing equipment
Heat resistance is an important factor to consider when comparing the different grades of stainless steel. The melting range of 304 is around 50 to 100 degrees Fahrenheit higher than 316. Although the melting range of 304 is higher than 316, they both have good resistance to oxidization in intermittent service up to 870°C (1500℉) and in continuous ...
What makes 316 more expensive than 304 stainless steel? The increase of nickel content and the addition of molybdenum in 316 makes it more expensive than 304. On average, the price of 316 stainless steel 40% higher than the price of 304 SS.
When comparing 304 stainless steelvs 316, they both have pros and cons to consider when deciding which one to use for different applications. For instance, 316 stainless steel is more resistant than 304 to salt and other corrosives. So, if you are manufacturing a product that will often face exposure to chemicals or a marine environment, 316 is the...
Let's take a closer look at the chemical composition of each. 304 stainless steel is made up of 18% chromium and 8% nickel while 316 stainless steel contains 16% chromium, 10% nickel and 2% molybdenum. This additional molybdenum allows for better corrosion resistance in certain environments, making it ideal for use in medical equipment or ...
Stainless Steel 316. 316 stainless, also known as A4 stainless, is defined by its stellar corrosion resistance. It is chemically similar to 304, with high levels of chromium and nickel. Also, 316 has silicon, manganese, and carbon, with iron as the remainder. However, 316 has a significant amount of molybdenum (2-3%), which 304 lacks.
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What is AISI 316 stainless steel?
Jan 15, 2019 · A few percentages this way or that in chromium and nickel. The difference derives from molybdenum. While grade 304 stainless steel only has trace amounts of it, AISI 316 has considerably more. Addition of molybdenum increases corrosion resistance of 316 stainless steel, especially against pitting and crevice corrosion in chloride environments.
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