Τι γράφει κάποιος που ξέρει από ατσάλια (ThyssenKrupp UK):Με την επελαση των κινέζων ουτε τα stainless steel δεν ειναι πλέον τοσο καθαρά τα κράματα. Πολλα τα πιάνει ο μαγνήτης
Is Stainless Steel Magnetic?
Most people are unsure whether stainless steel is a magnetic or a non-magnetic metal. Some believe it could be magnetic because it has traces of iron, but in a real sense, the answer is neither a yes or a no. Some stainless steel varieties are magnetic while others aren’t.What Makes Stainless Steel Magnetic?
- · The alloy must have iron in it.
- · The crystal structure of the alloy must be arranged in a martensitic or ferritic structure.
Which Types of Stainless Steel are Magnetic?
Whether a type of stainless steel is magnetic or not, it can be grouped depending on the type of stainless steel. Some of the typical magnetic stainless steels include:- · Stainless steel grades 409, 430 and 439 also known as ferritic stainless steels.
- · Stainless steel grades 410, 420 and 440 – martensitic stainless steels.
Alloy Steels
Suitable barrel alloys include types having varying amounts of chromium, molybdenum, vanadium, nickel and manganese as alloying metals. A popular example and perennial favorite in the U.S. is called SAE 4140 chrome-molybdenum or "chrome-moly" steel. In Europe, vanadium and nickel-steel alloys are preferred. Most standard barrels are made with alloy steels, as they offer an excellent balance of strength and cost.