The Four Types of Steel (Part 4: Stainless Steel) | Metal Supermarkets

The Four Types of Steel (Part 4: Stainless Steel) | Metal Supermarkets


Hi and welcome to Metal Supermarkets, the Convenience Stores for Metal. I’m Jason Jackson, Operations and Development Manager. In this video blog series, we’ve been looking at the four main types of steel using our acronym C.A.S.T. which stands for carbon steel alloy steel stainless steel and tool steel. We’ve already talked about how steel is classified and looked closer into the first two types of steel from our acronym. Today we’ll take a closer look at the “S” Stainless steel Stainless steel typically contains between 10% and 20% chromium. It is the main alloying element and helps to make stainless steel extremely corrosion resistant. In fact, stainless steel is about 200 times more resistant to corrosion than mild steel. Stainless steel can be divided into five groups: Austenitic Ferritic Martensitic Duplex and Precipitation Hardening Austenitic steels make up the largest portion of the global stainless steel market and have a wide range of applications such as food processing equipment, kitchen utensils, medical equipment and more Austenitic stainless steel grades are
weldable, non-magnetic and not heat treatable. Typically, Austinitc stainless steels can be loosely divided into three groups Common chromium nickel which is the 300 series, Manganese chromium nickel nitrogen which is the 200 series and specialty alloys. Ferritic steals contain trace amounts of nickel, between 12% and 17% chromium, less than 0.1% carbon, and other alloying elements such as molybdenum, aluminum or titanium. Ferritic steels tend to have good ductility and formability but relatively poor high temperature strengths when compared to Austenitic grades. Ferritic stainless steels are magnetic but not heat treatable and often cost less than other stainless steels. Some Ferritic grades include 405 and 409 Martensitic steels contain 11% to 17% chromium, less than 0.4% nickel and up to 1.2% carbon. The higher carbon content of this heat treatable steel affects forming and welding. To obtain other useful properties and prevent cracking preheating and post weld heat treatment is required Martensitic stainless steels such as 403, 410, 410-Nickel Molybdenum and 420 are magnetic and heat treatable. They are often used for dental and surgical equipment knives and other cutting tools. Duplex steels typically contain 20% to 25% chromium and 5% nickel, along with molybdenum and nitrogen Duplex steels have higher yield strength and greater stress corrosion cracking to chloride than Austenitic stainless steels. Some applications include chemical plants and piping. Precipitation hardening steels are chromium nickel stainless steels that also contain alloying elements such as aluminum copper or titanium. These alloys allow the steel to be hardened by a solution and aging heat treatment. They can be there Austenitic or Martensitic in the aged condition. Hopefully this has given you a better idea of common types of stainless steel. Stay tuned for the final part of this video blog series where we will look closer at the last letter in our acronym C.A.S.T. Tool steel. If you need stainless steel for your next project Metal Supermarkets is the world’s largest supplier of small quantity metals. carrying over 8,000 types, shapes and grades of metal including various stainless steel grades cut to size and ready fast!

26 thoughts on “The Four Types of Steel (Part 4: Stainless Steel) | Metal Supermarkets

  1. Hey Jason my name is Craig and I'm a Professional Body Piercer, I've always sorta dabbled in making some of my body jewelry (more or less modifying existing jewelry and re-polishing it) for my clients. My question is if I purchased some steel from you how do I get it from316L to 316LVM ASTM-F138? Is this even possible? Thank you in advance.

  2. I have heard that the reason austenitic steel is not magnetic is because the nickel and chromium keeps iron in its gamma state. Gamma iron by itself is reached at the curie temperature which is how hot the iron needs to be to lose magnetism temporarily. Beta iron and alpha iron(most common atomic structures of iron) are both magnetic but gamma iron is not magnetic.

  3. Hi! very informative video, I have a question: does recycled stainless steel contain traces/small amounts of lead (Pb)?

  4. trying to d/l Part 4 (Stainless). When I click on the icon, it plays (on screen). however, the link displayed is that for part 3, Alloy steel. Ditto part 5

  5. so im trying to research the viability of a stainless steel boat, what type of steel would you say is most likely to be corrosion resistant enough to handle salt water conditions?

  6. How can you tell something if you don't show the material how do U want to know which one is which if you cannot see it

  7. I'm looking for a manufacturer of titanium coilstock in .020" thickness and 20" width. can you hook me up?

  8. What would be the best type of stainless steel to make a plastering trowel. I know some trowels are stainless steel. Some are crome steel and carbon steel.

  9. What Quran the book of living miracles written 1500 years back, talks about Iron ?

    Why the verse of Book and The Balance (Constitution/Law/Legislation) talks of Iron ??

    What Equality for all, in resources / status / society, had to do with steel / Iron ???

    Note the naming of Chapter and verse 57:26 the atomic Wt and atomic No of Iron????

    لَقَدْ أَرْسَلْنَا رُسُلَنَا بِالْبَيِّنَاتِ وَأَنزَلْنَا مَعَهُمُ الْكِتَابَ وَالْمِيزَانَ لِيَقُومَ النَّاسُ بِالْقِسْطِ وَأَنزَلْنَا الْحَدِيدَ فِيهِ بَأْسٌ شَدِيدٌ وَمَنَافِعُ لِلنَّاسِ وَلِيَعْلَمَ اللَّـهُ مَن يَنصُرُهُ وَرُسُلَهُ بِالْغَيْبِ إِنَّ اللَّـهَ قَوِيٌّ عَزِيزٌ ﴿الحديد: ٢٥﴾

    Most certainly, We have send our Messengers with signs and send with them

    “The Book and The Balance” (Constitution/Law/Legislation)

    to establish equality / justice among men.

    And We sent down ““Iron”” (on purpose).

    In Iron, are great-powers (hard steel for structures) and diverse specification (magnetism and current) for men.

    And Allah knows, who helps Him and His messenger “unseen”

    Verily Allah is in Himself, most mighty and most Powerful. 57:25.

    Now connect the verse, to understand unseen power of Iron and how it helps to propagate the Message of Allah ?

    Signs Balance Iron Power Uses Helping unseen

    (science) (Gravity) (Magnetism) (electricity) (Current Uses) (Dawa on social media)

    The Greatest Science in this verse of Quran is “”We sent Iron””……

    Iron was not the produce of planet earth at the time of its birth,,, as water.

    Iron was sent to earth after millions of years of its creation / birth.

    and then water was sent……2:27

    We know now by science Iron is not the product of earth but it came to earth by meteorites when planet earth was still in volcanic stage.

    Then came the water to cool the earth and start life.

    Why Iron was sent first and Water next ?

    Iron formed the gravity and held the water vapors from flying off back in space.

    This information was unknown at the time of revelation and was discovered by scientist few years back…..

    THEN HOW DOES QURAN MENTIONS THIS.????

    This authenticates / confirms / Certifies Quran is a Divine book

    A PARALLEL BOOK WITH SCIENCE….

    Whereas Bible …..it starts with first fake sentence

    Genesis 1 First earth for Formless, Dark and Dark oceans

    Then God created light

    And God saw light was good ……bla bla bla

    So with this verse, Quran discloses great secrets of creation procedure of planet earth

    Lets science and see points wise:

    1) First earth was Dry, Hot, Volcanic and Lava filled 18:45 / 6:59 / 22:5.

    2) First earth was Gravity-less, so no atmosphere.57:25

    3) No atmosphere means, water oxygen cannot stay on earth.

    4) Iron should be sent in lava earth period, where it buried in depth of earth necessary.

    5) Quantity of Iron sent should establish, proper Gravity to hold atmosphere and support life.

    6) After atmosphere, it was time of Water to cool earth and start Sea, Oceans, and Rivers because of Gravity.

    7) After water and rivers plants and first single cell life because of Gravity 2:27

    All this, “then unknown secrets” are enclosed in this simple verse of Quran certifying that Creator of universe knows its secrets billion of years back.

    This is how Quran talks in short sentences or telegram messages.

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