Which is better stainless steel, 301 or 304?
Answer:
*Type 304 is better stainless steel than 301.
*Type 304 is an Austenitic steel.
*intergranular corrosion is not a problem in ss304 due to low carbon content(0.04%) as against 0.1% in ss301.
Weldability is good due to low C in SS304.
[This group contains Chromium in the range 17 - 25% and Nickel in the range 8 – 20%, with various elements added in an effort to achieve desired properties. When fully annealed this group exhibits a useful range of mechanical and physical properties. These steels are normally non magnetic.
Type 304:
An economic balance of alloying materials. Excellent corrosion resistance in unpolluted and freshwater environments, though not recommended for seawater.]
*[SS 301
SS 301 is an austenitic Chromium-Nickel stainless steel capable of attaining high strength with moderate cold working. The Combination of high strength and good ductility makes it suitable for numerous mechanical switches as well as electronic and computer spring components.
NOMINAL COMPOSITION:
Chromium 17.0%
Carbon .10%
Nickel 7.4%
Iron Balance
TYPICAL MECHANICAL PROPERTIES:
1
ANNEALED COLD ROLLED:
Ultimate Tensile Strength 110,000 PSI 300,000 PSI
Yield Strength (.2% Offset) 40,000 PSI 280,000 PSI
Elongation in 2” * 50% 2%
Modulus of Elasticity (Tension) 28 x 106 PSI
Poisson’s Ratio 0.25
*The measured elongation will be less as thickness decreases to .002” and less.]
304, wikipedia is normal people contributing...that lets face it normal people are stupid (sorry normal people)
Call me pedantic but no material is 'better' than another one. Each material has different properties that are there to be assessed for their suitability to fit a given application.
If 301 cost half the amount of 304 but does the job you need it to, then 301 is 'better'.
304 has a higher specification than 301.
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