Teach you to know stainless steel

Teach you know stainless steel
One, what steel is stainless steel?
Stainless steel is a sort of steel, steel is to point to contain carbon (C) the quantity is in 2% say below for steel, be more than 2% it is iron. Steel attends chromium in exercising a process (Cr
) , nickel (Ni) , manganese (Mn) , silicon (Si) , titanium (Ti) , molybdenum (Mo) the function that waited for alloying element to improve steel makes steel was had be able to bear or endure corrupt sex (do not go up namely become rusty
) it is the stainless steel that we often say namely.
?
2, why does stainless steel have different steel grade?
Stainless steel is exercising process adjacency, because enter alloying element sort different, different what sort enters an amount is different. Its character also is different, be
try to distinguished a coronal to go up different steel grade, it is to see adornment uses stainless steel more below different watch of content of ” of alloying element of steel grade “ offers reference only:
Steel grade carbon (C) silicon (Si) manganese (Mn) phosphor (P) sulfur (S) is chromic (Cr) nickel (Ni) molybdenum (Mo) copper (Cu)
304 ≤0.08 ≤1.00 ≤2.00 ≤0.045 ≤0.03 18-20 8-10
301 ≤0.15 ≤1.00 ≤2.00 ≤0.045 ≤0.03 16-18 6-8
202 ≤0.15 ≤1.00 7.5-10 ≤0.05 ≤0.03 17-19 4-6
201 ≤0.15 ≤1.00 5.5-7.5 ≤0.05 ≤0.03 16-18 3.5-5.5
3, stainless steel is not to take magnetism namely, is taking magnetism good stainless steel namely? If microstrip magnetism be 304?
A lot of clients buy stainless steel to bazaar, itself takes a small magnet, when seeing money, suck, think sucking those who go up is good stainless steel namely. Do not take magnetism to won't rust
, originally this is a kind of wrong understanding. Stainless steel belt does not take magnetism arrange tectonic resolution, molten steel is in condense because process adjacency condenses temperature is different can
Form “ ferrite ” , “ austenite ” , “ martensite ” to wait different the stainless steel that plans construction, stainless steel of ” of martensite of ”“ of meantime “ ferrite is belt magnetism
. And stainless steel of “ austenite ” its are Baconian and mechanical function, specifications solderability is good, but only the stainless steel of “ ferrite ” that from corrosion resistance character takes magnetism is ambitious
At stainless steel of “ austenite ” . What the Gao Han manganese that at present market is on the move contains nickel less is alleged stainless steel of 200 series, 300 series also does not take magnetism, cncdar of fair number of numerical control small letter
But its function and the of 304 space that contain nickel high are very large, instead, 304 through drawing, anneal, polish, forging wait for technical divisions to manage to also be met microstrip is magnetic, use consequently not rust
Metal strip does not take magnetism to come the stand or fall of differentiate stainless steel is a kind of misunderstanding, also be unscientific.
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