316L stainless steel, 304 stainless steel, 201 stainless steel, 430 stainless steel, 304L stainless steel How to distinguish the better of the above?

316L stainless steel, 304 stainless steel, 201 stainless steel, 430 stainless steel, 304L stainless steel How to distinguish the better of the above?

The difference is very simple. 201 has the lowest nickel content, 1-2%. For ordinary processing, the condition is that the acid-base content in the air is low and the air pollution index is low. The second is 301304, which is the upgraded version of 301. The nickel content of 301 is 6%, the nickel content of 304 standard is more than 8%, and the nine points are 304s. By analogy, the highest nickel content in China is 9, and the highest is imported plate, There are 3063093099s, 310310s, 310i, 316316L and so on. When the nickel content reaches 17%, it is really defined as stainless steel. 430 stainless steel has good corrosion resistance and general-purpose steel. Its thermal conductivity is better than that of austenite. Its coefficient of thermal expansion is smaller than that of austenite. It is heat-resistant and fatigue resistant. It is added with stabilizing element titanium, 430F is a kind of steel with free cutting property added to 430 steel. It is used for automatic lathe, bolt and nut. 430lx can add Ti or Nb to 430 steel to reduce C content, It can be used in hot water tank, hot water supply system, sanitary appliance, household durable appliance, bicycle flywheel, etc
Chemical composition of 430 stainless steel
Carbon (c): ≤ 0.12
Silicon (SI): ≤ 0.75
Manganese (MN): ≤ 1.00
Phosphorus (P): ≤ 0.040
Sulfur (s): ≤ 0.030
Nickel (Ni): ≤ 0.60
Chromium (CR): 16.00 ~ 18.00
Molybdenum (MO): 2.00-3.00
Mechanical properties of 430 stainless steel:
Density: 7.7g/cm3
Melting point: 1427 ℃
Expansion coefficient: M / m ℃ (at 20-100 ℃)
Young's modulus: kn / mm2
Rigidity modulus: kn / mm2
Application standard: n / a w.nr (UNS)
430 stainless steel has the following states, different states, dirt resistance and corrosion resistance are also different
No.1, 2D, 2b, N0.4, HL, Ba, mirror, and various other surface treatment states
Surface processing grade feature processing technology
2D is silvery white, hot rolling + annealing shot peening + cold rolling + annealing pickling
2b is silvery white and has better gloss and flatness than 2D. Hot rolling + annealing shot peening pickling + cold rolling + annealing pickling + quenching and tempering rolling
No.3 has good gloss and coarse grain. It can be used to polish and temper 2D or 2B products with 100 ~ 120 abrasive material (JIS R6002)
No.4 has good luster and fine grain. It is used to polish and temper 2D or 2B with 150 ~ 180 abrasive material (JIS R6002)
HL is silvery gray and has hairline stripes. The surface of 2D or 2B products is polished with abrasive material with appropriate particle size to make continuous wear lines

What is the meaning of L in stainless steel 304L?

304L is a variant of 304 stainless steel with low carbon content, which is used for welding. The low carbon content reduces the carbide precipitation in the heat affected zone near the weld to the minimum, and the precipitation of carbide may lead to intergranular corrosion (welding erosion) of stainless steel in some environments
L means low

What electrode is used for 316L stainless steel welding

Is 316L stainless steel the same as 316 stainless steel?
In the encyclopedia, the former C ≤ 0.03, Cr: 16.0-18.0; the latter C ≤ 0.08, Cr: 16.0-18.5. Other components are the same. Is it different or is it a small mistake of the editor of the encyclopedia? There is no query about the difference between the two kinds of steel. What is the influence of these elements on the steel? Which is better? Which is more expensive?
The tensile strength, yield strength, elongation, area reduction and density of SS316 are all in Baidu Encyclopedia. What about SS316L?

The Chinese brand of 316 stainless steel is 0Cr17Ni12Mo2,
The Chinese brand of 316L stainless steel is 00Cr17Ni14Mo2,
"In Encyclopedia, the former C ≤ 0.03, Cr: 16.0-18.0; the latter C ≤ 0.08, Cr: 16.0-18.5" is right, but the Ni content of 316L is 2% higher, Ni is very expensive, so 316L is more expensive than 316. I used 316 a few months ago, about 62 yuan / kg
2 = 177mpa, tensile strength σ B = 480mpa, δ 5 = 40%, ψ = 60%