T-300 series stainless steel
The total components of stainless steel are 302, 303, 304, 3041, 316, 3161, 316t, 321, 347, etc
T-304 stainless steel UNS s30400/EN 1.4301
T-304 is the most commonly used stainless steel material in the world and is known as 18/8. Good weldability, reasonable process and good corrosion resistance.
T-3041 stainless steel UNS s30403/EN 1.4307
T-3041 reduces or lowers the carbon content, which eliminates carbide precipitation during welding, so the alloy can be used in the "as welded" state even under severe corrosive conditions.
T-316 stainless steel UNS s31600/EN 1.4401
T316 stainless steel is 18/8 and contains molybdenum in the alloy. Provides better overall corrosion resistance than Class 304, especially in chloride environments, with higher resistance to pitting and crevice corrosion.

T-316L stainless steel UNS s31603/EN 1.4404

T-3161 is reduced or low carbon to eliminate carbide precipitation and provide higher creep, stress fracture and high temperature tensile strength.

T-321 stainless steel uns s32100/EN 1.454

Type 1321 is an austenitic chromium-nickel steel stabilized with titanium. This material has similar properties to Alloy 304, but its titanium content limits carbide precipitation, making it easier to machine. This grade is recommended for parts that cannot be annealed after welding.