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Type 321 stainless steel is Ni - Cr - Ti austenitic stainless steel, abrasion resistance, high temperature resistance, creep resistance, etc., used in the manufacture of the lining of wear resistant acid containers and equipment, pipeline, high grain boundary corrosion resistance requirements of the chemical industry, coal, oil field open machine, have difficulty in building materials heat-resistant parts and heat treatment of parts.
Specification comparison: austenitic stainless steel is equivalent to domestic 1Cr18Ni9Ti
The American brands are :321, S32100 and TP321 Japanese brand name :SUS321
British brands :304S12, 321920 German brand :X10CrNiTi189
C:≤ 0.08 Si: ≤1.00 or less Mn: ≤2.00 S: ≤ 0.030
P: ≤0.045 Cr: 17.00 ~ 19.00 Ni: 9.00 ~ 12.00 Ti: ≥5×C%
Mechanical properties of
Tensile strength σb (MPa):≥520
Conditional yield strength σ0.2 (MPa):≥205
elongation δ5 (%):≥40
Reduction of section ψ (%):≥50
321 stainless steel plate performance
321 stainless steel plate of Ti as a stabilizing element exists, but it is also a hot steel grade, in high temperature is better than 316 l stainless steel plate. 321 stainless steel plate in different concentration and temperature of organic acid and inorganic acid, especially in oxidizing medium has good abrasion resistance, used in the manufacture of the lining of wear resistant acid containers and equipment and pipelines.
Type 321 stainless steel plate is Ni - Cr - Mo austenitic stainless steel plate, its performance and 304 stainless steel plate is very similar, but due to join the metal titanium, make its have the better grain boundary corrosion resistance and high temperature strength.The formation of chromium carbide was effectively controlled by the addition of metal titanium.
The Stress Rupture and mechanical properties of the 321 stainless steel plate are better than that of the 304 stainless steel plate.
The difference between 321 stainless steel plate and other stainless steel plate
304 contains neither titanium nor molybdenum
Mo2Ti contains both molybdenum and titanium. Its performance of 316L is optimal
1. Oil exhaust combustion pipeline
2. Engine exhaust pipe
3. Boiler shell, heat exchanger and heating furnace components
4. Silencing parts for diesel engines
5. Boiler pressure vessel
6. Chemical truck
7. Expansion joint
8. Spiral welded pipe for furnace pipe and dryer
Heat treatment specification
Solid solution heat treatment specification: 1) 920 ~ 1150 ℃ cold quickly;2) stabilization processing according to buyer's request and heat treatment temperature of 850 ~ 850 ℃, but it must be noted in the contract.3) solid solution temperature should not exceed 1066 ℃, and more than words, must carry out the stabilization treatment, in order to prevent the precipitation of chromium.