321 Stainless Steel Tubing

321 Stainless Steel Tubing

321 stainless steel tubing 321 stainless steel tubing is NI-CR-TI austenitic stainless steel, used in the manufacture of wear-resistant acid containers and wear-resistant equipment lining, conveying pipelines. Name Austenitic stainless steel stainless steel Japanese brand SUS321 UK grade 304S12,...
Product description

321 Stainless Steel Tubing

321 stainless steel tubing is NI-CR-TI austenitic stainless steel, used in the manufacture of wear-resistant acid containers and wear-resistant equipment lining, conveying pipelines.


Name

Austenitic stainless steel stainless steel Japanese brand SUS321 UK grade 304S12, 321920 German grade x10crniti189

Characteristic abrasion resistance, high temperature and creep resistance

Application industry is applied to the high corrosion resistance of grain boundary.


Overview

U.S. brands: 321, S32100, TP321


Characteristics

321 stainless steel tubing in which ti as a stabilizing element exists, but it is also a hot and strong steel, in the high-temperature aspect than 316L is much better. 321 stainless steel tubing in different concentrations, different temperatures of organic acids and inorganic acids, especially in the oxidizing medium with good wear and corrosion resistance, used to manufacture wear-resistant acid containers and wear-resistant equipment lining and conveying pipelines.

321 stainless steel tubing is NI-CR-TI austenitic stainless steel, its performance and 304 very similar, but because of the addition of metal titanium, so that it has a better resistance to grain boundary corrosion and high temperature strength. Due to the addition of metal titanium, it effectively controls the formation of chromium carbide.

321 stainless steel tubing has excellent high-temperature stress rupture (Stress rupture) performance and high-temperature resistance to creep ("Resistance) stress mechanical properties are better than 304 stainless steel.

 

Application

Used in the field of chemical, coal and petroleum industries, which require high resistance to grain boundary corrosion, the parts of heat-resisting parts and heat treatment have difficulty, such as:

1. Oil exhaust gas Combustion pipeline

2. Engine exhaust Pipe

3. Boiler housings, heat exchangers, heating furnace Parts

4. Silencer Parts for diesel engines

5. Boiler pressure Vessel

6. Chemical Transport Vehicle

7. Telescopic connectors

8. Spiral welded pipe for burning furnace piping and drying machine


Chemical Composition(%)

C ≤ 0.08

Si ≤ 1.00

Mn ≤ 2.00

S ≤ 0.030

P ≤ 0.035

Cr: 17.00 ~ 19.00

Ni: 9.00 ~ 12.00

Ti ≥ 5xc%


Mechanical Properties

Tensile strength Σb (MPa) ≥ 520

Conditional yield strength σ0.2 (MPa) ≥ 205

Elongation rate δ5 (%) ≥ 40

Section shrinkage rate of PSI (%) ≥ 50

Hardness: ≤187HB; ≤90hrb; ≤200hv


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