Asked by: Romaisae Benken
home and garden home appliances

How can I tell if my stainless steel is 304 or 316?

Last Updated: 29th April, 2020

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Someone asked me how they can easily tell 304from316 Stainless. Try the magnet test. Ifthemagnet sticks it cannot be 316 and might be304. Ifthe magnet doesn't stick it could be either316 or coldworked 304, so heat the piece toabout 800 °C, letair-cool and try again withmagnet.

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Moreover, how can you tell the difference between 304 and 316 stainless steel?

The simple answer is 304 contains 18%chromiumand 8% nickel while 316 contains 16% chromium, 10%nickeland 2% molybdenum. The molybdenum is added to help resistcorrosionto chlorides (like sea water and de-icingsalts).

Subsequently, question is, how can I tell what kind of stainless steel I have? How to Tell if Stainless Steel Is Real

  1. Stick the magnet on the piece you are testing. If itholdsfirmly, the metal is possibly stainless steel.
  2. Pick a spot on the piece that you don't mind damagingalittle.
  3. Fill the eye dropper with muriatic acid. Drop a small amountofthe acid on the test spot.
  4. Wipe the acid off the piece. Examine the test spot.

Also to know is, is 304 or 316 stainless steel stronger?

Stainless 316 contains more nickelthanstainless 304, while 304 contains more chromiumthan316. Both steels are durable and provideexcellentresistance to corrosion and rust. 304 stainlesssteel is themost versatile and widely used austeniticstainless steel inthe world, due to its corrosionresistance.

Will a magnet stick to 304 stainless steel?

All stainless steel is magneticexceptaustenitic stainless steel which is actually 300seriesstainless such as 304 and 316. However, 300seriesstainless is non-magnetic only after it isfreshlyformed. 304 is almost for sure to becomemagneticafter cold work such as pressing, blasting,cutting,etc.

Related Question Answers

Radmila Meroño

Professional

What is the highest grade of stainless steel?

The best known grade is Type 304,alsoknown as 18/8 and 18/10 for its composition of 18% chromiumand8%/10% nickel, respectively. The second most commonausteniticstainless steel is Type 316.

Kacie Scheppers

Professional

Will a magnet stick to stainless steel?

Steel is a metal that magnetsstickto because iron can be found inside steel.That iswhy you will find that while some types ofstainlesssteels are magnetic, other stainlesssteel typeswill not make magnets stick tothem.

Guoxing Griebel

Professional

What are the 4 types of stainless steel?

Outokumpu's stainless steels can be dividedintofour main types: ferritic, martensiticandprecipitation hardening, duplex, and austenitic – thebeststeel for you depends on the application.

Sergio Val

Explainer

What is the best food grade stainless steel?

What is the Best Food Grade Stainless Steel?
  • Food Grade Stainless Steel 316. Grade 316 stainless isanaustenitic stainless steel alloy with a high chromium andnickelcontent.
  • Grade 430 Stainless Steel and Food. As an alloy, stainlesssteel430 food grade metal is very similar to grade 316stainless.
  • Which is Best for Food-Safe Applications?

Gianmarco Felice

Explainer

What is the best grade of stainless steel for cookware?

By far the most common type of stainlesssteelused in cookware. The two most popular types ofstainlesssteel are 18/10 and 18/8 which form part of the304series.

Navidad Idini

Explainer

Which is better ss304 or ss316?

What is the difference between SS304andSS316 stainless steel? From a chemical orscientificstandpoint the answer would be that 304 stainless steelcontains18% chromium and 8% nickel while 316 contains 16% chromium,10%nickel and 2% molybdenum. The molybdenum is added to helpresistcorrosion.

Dilbag Bockhold

Pundit

Which stainless steel is not magnetic?

Austenitic Stainless Steel:
Austenitic stainless steels have a high amountofaustenite which makes them mostly non-magnetic.Eventhough grades such as 304 and 316 stainless steel havehighamounts of iron in their chemical composition, austenite meanstheyare non-ferromagnetic.

Fati Torhoff

Pundit

What are the grades of stainless steel?

Martensitic Grades
They are magnetic and can be hardened by heattreating.The martensitic grades are mainly used wherehardness,strength, and wear resistance are required. Basicmartensiticgrade, containing the lowest alloy content of thethreebasic stainless steels (304, 430,and410).

Gricelda Vosseburger

Pundit

What is the strongest stainless steel grade?

Type 440—a higher grade ofcutlerysteel, with more carbon, allowing for much betteredgeretention when properly heat-treated. It can be hardenedtoapproximately Rockwell 58 hardness, making it one of thehardeststainless steels.

Hutman Tzarevsky

Pundit

Does 316l stainless steel rust?

As such, regardless of whether you use 304 or316Lexposed stainless-steel cabinetry andappliancesrequires maintenance. The addition of molybdenum (inmarine gradestainless steel) only delays corrosion,it doesnot stop it. These can break down the passive layerleaving thestainless steel to rust.

Emerito Orueçar

Pundit

What is the tensile strength of 304 stainless steel?

AISI Type 304 Stainless Steel
Physical Properties Metric English
Tensile Strength, Yield 215 MPa 31200 psi
Elongation at Break 70 % 70 %
Modulus of Elasticity 193 - 200 GPa 28000 - 29000 ksi
Poisson's Ratio 0.29 0.29

Lennon Weusten

Teacher

Is ss304 magnetic?

Magnetic and non-MagneticStainlessSteel
A basic stainless steel has a 'ferritic' structureandis magnetic, formed from the addition of chromium –itcan be hardened through the addition of carbon, makingit'martensitic'.

Johnnatan Hopert

Teacher

Why stainless steel does not rust?

Chromium plays a dominant role in reacting with oxygentoform this corrosion product film. In summary,stainlesssteel does not rust because it is sufficientlyreactive toprotect itself from further attack by forming apassivecorrosion product layer.

Sellamia Hebendanz

Teacher

Why is it called stainless steel?

Stainless steel is called that becauseitdoesn't rust or discolor, unlike regular steel orplainiron. This is because of the chromium in the alloy. It'sjustenough chromium to cause a chromium oxide layer on thestainlesssteel.

Sergio Zeymer

Teacher

Does stainless steel last forever?

Frankly, speaking the type of stainlesssteelwhich is used in our day to day home appliances or usageis strongenough and lasts longer like forever unlessyou wishto change or replace it. Stainless steel with grade–316 is estimated to last for 1200 years in ruleenvironmentbefore heavy pitting.

Aladino Clemente

Reviewer

What is the cost of stainless steel?

Costs of Each
Stainless steel costs four to fives times muchasgalvanized steel in material costs.Structuralsteel is holding somewhere between 30 to 80 centsper pound,while stainless steel is at least $3perpound.

Bat Jardin

Reviewer

What is the yield strength of stainless steel?

AISI Type 304 Stainless Steel
Physical Properties Metric English
Tensile Strength, Ultimate 505 MPa 73200 psi
Tensile Strength, Yield 215 MPa 31200 psi
Elongation at Break 70 % 70 %
Modulus of Elasticity 193 - 200 GPa 28000 - 29000 ksi

Idali Galbarro

Reviewer

Is 18/10 stainless steel a good quality?

Although food safe, they are not as resistanttocorrosion and not as high quality as 304 grade. Whenitcomes to flatware, people often assume that 18/10 isheavierin weight. Actually, there is no difference between 18/8and18/10 flatware when it comes to weight.

Toccara Torrente

Reviewer

Does stainless steel tarnish?

Although stainless steel jewelrydoesn'ttarnish or corrode, it can scratch. Stainlesssteeljewelry is pretty easy to clean.