OK-EXPERTS...I have included some good info so lets discuss which is the best...316L is a common rep material as is 440. Lets get in to why one vs. the other please...seem 440 is harder/heavier but 316L offers better resistance to corrosion which seems important in a daily beater especially if you are water bound...let me know what you think...
Stainless Steel 316L or called:
316L SCQ
3R60
Prodec 316L
Project 70 316L ®*
Project 7000 Stainless 316L ®*
Speed-E-Mac 316L
VLX316U
Principal Design Features
316L is often substituted for 316 stainless due to its superior weldability with no appreciable difference in price or properties. It combines good availability in all forms and size ranges with great strength and corrosion resistance.
Applications
Components used in marine environments and chemical equipment. Suitable for any application where 316 stainless is used and stronger welds are desirable.
VS.
Stainless Steel 440 A
Chemistry Data
There is no chemistry data available for this grade.
Principal Design Features
This is a high carbon martensitic stainless with moderate corrosion resistance good strength and the ability to obtain and keep excellent hardness (Rc 56) and wear resistance.
Applications
Ball bearings and races, gage blocks, molds and dies, cutlery, valve components, knives and measuring instruments.
VS.
Stainless Steel 904L
or...AL 904L Cronifer 1925 LC VLX904
Principal Design Features
904L is an austenitic stainless steel designed for moderate to high corrosion resistance. Its low carbon content improves cleanliness and weld strength.
Applications
Utility scrubber assemblies, acid and fertilizer production equipment.