Marble S Reagent

Marble s reagent page 5 section 7.

Marble s reagent.

100cc hcl 3cc hno 3 immersion. Marble s reagent aka marble s etch is a metallographic etchant for etching 300 series austenitic stainless steels nickel and cobalt based superalloys. The etchant will darken austenitic grains attack sigma phases and show grain flow. Add a few drops of h2so4 to increase activity.

Clear up spills immediately and dispose of waste safely. Protect from physical damage. 9 marble s reagent 4g cuso 4 20cc hcl 20cc h 2o immersion or swab astm e 407 designation is 25 marble s 10 viella s 5cc hcl 2gr picric acid immersion or swab astm e 407 designation is 80 vilella s. The etchant will darken austenitic grains attack sigma phases and show grain flow.

David crocker valencia california. A standard mixture contains 4g cuso4 and 20ml hcl added to 20ml water. When diluting the acid. 100cc ethyl alcohol astm contains 1 gr picric 11 aqua regia in alcohol.

I would like to know if there is a procedure for etching steel with a marbles reagent. We have the formula but we do not know if the parts are dipped and if so for how long or if you apply current forward or reverse. Made to order and custom items ship in as little as 7 to 10 days. Swab etch to reveal general microstructure.

Immerse or swab for 5 60 seconds. Marble s reagent 50ml hcl 25ml saturated aequous solution of copper ii sulphate. 10 grams 50 ml 50 ml. Also called marble s etch this metallographic etchant is for etching 300 series austenitic stainless steels nickel and cobalt based superalloys.

Handling and storage store in a cool dry ventilated storage area with acid resistant floors and good drainage. Kallings solution 2 g cupric chloride 40 80ml methanol 40ml water 40ml hydrochloric acid. Please note that scratch marks from sample preparation will also become apparent. It forms a green solution with a pungent acidic odour and a ph below 1.

Do not wash out container and use it for other purposes. 10 grams 10 grams 100 ml. Uses of marble s reagent. In stock items ship in 2 to 3 business days or less.

If the product is soluble in water dilute the spillage with water and mop it up. Approach the spillage from upwind. Acid ferric chloride 10 g ferric chloride 30 ml hcl 120 ml water. Used for revealing general structure.

This product is made with reagent grade chemicals. Pre mix koh and water before adding k3fe cn 6. Marbles reagent procedure. Keep out of direct sunlight and away from heat water and incompatible materials.

Cuso4 hydrochloric acid water. For etching ni ni cu and ni fe alloys and superalloys. Product size container shelf life hazmat info lots available list price your price 4621 4 16 r4621400 500a 500 ml.