What is the difference between SS 202 and ss304?

The major difference between the 304 and 202 stainless steels is the nickel and chromium content. The 202 grade has 16% minimum chromium and 0.5% minimum nickel in the composition where the 304 has 18% minimum chromium and 8% minimum nickel. Both of the steels are non-magnetic.

What does grade SS mean?

The “grade” of stainless steel refers to its quality, durability and temperature resistance. The numbers (18/8, 18/10, etc.) are the composition of the stainless steel and refer to the amount of chromium and nickel (respectively) in the product.

Which grade of SS is best?

Type 304: The best-known grade is Type 304, also known as 18/8 and 18/10 for its composition of 18% chromium and 8% or 10% nickel, respectively. Type 316: The second most common austenitic stainless steel is Type 316.

How do I know if my SS is 304 or 316?

Aesthetically, there is no difference between the two; in fact, the only way to differentiate between them is to test them chemically. The main difference between 304 and 316 stainless steel is 316 SS has the addition of molybdenum.

How do I know if my SS is 304?

If the color changes from yellow to pink, we are in the presence of a stainless steel containing molybdenum (AISI 316). If the yellow stain disappears, we are in the presence of a stainless steel that does not contain molybdenum (AISI 304).

Which is better SS or MS?

As chrome is a hard alloy, stainless steels are much more impact resistant compared to mild steel and (although relatively easy to fabricate) are not as easy to fabricate as mild steel. Mild steel is much more malleable compared to stainless and so is used a lot in general fabrication.

What is the cheapest grade of stainless steel?

Type 409
Type 409: One of the least expensive Stainless grades due to its decreased chromium content. This type should only be used for interior or exterior parts in non-critical corrosive environments. Typical applications include muffler stock.

Is 316 SS Magnetic?

Both 304 and 316 stainless steel possesses paramagnetic characteristics. As a result of these properties small particles (approx. 0.1-3mm dia sphere for example) can be attracted to powerful magnetic separators positioned in the product stream.

How do I know if I have 304 or 316?

Try the magnet test. If the magnet sticks it cannot be 316 and might be 304. If the magnet doesn’t stick it could be either 316 or cold worked 304, so heat the piece to about 800 °C, let air-cool and try again with magnet. If it sticks now its 304 SST.

How can you tell if stainless steel is 316?

To distinguish the molybdenum-containing alloys, a chemical reagent is then used on the yellow stain. If the color changes from yellow to pink, we are in the presence of a stainless steel containing molybdenum (AISI 316).

What are the different sizes of gravel used for?

Gravel Sizes. About one-eighth inch in diameter, it’s similar in size to coarse sand. This type of rock is most often used in constructing bricks and paving stones. A similar-sized material, called size #67, is often used as a fill for roadway beds and in the construction of slabs of concrete.

What’s the difference between crushed and quarried gravel?

Crushed stone, on the other hand, is quarried and crushed to a specified size depending on its intended use. Gravel Sizes vary according to the types of commercial, construction and landscaping jobs in which they’re used. Several of the different sizes of stones are most commonly used by construction and landscaping experts.

What are the different grades of stainless steel?

Available in three grades 440A, 440B, 440C (more common) and 440F (free machinable).

What kind of stone is used in a gravel driveway?

The middle layer of a gravel driveway is typically constructed of golf-ball-size crushed stone, or #57 stone.