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321H stainless steel pipe is a type of metal pipe used in open-air equipment in the chemical, coal and petroleum industries where high resistance to intergranular corrosion is required. It is mainly used in industrial devices and heat-resistant components of building materials in high-temperature and high-pressure corrosive environments such as boiler pipes and heat exchangers.
High-quality carbon structural steel, alloy structural steel and stainless heat-resistant steel seamless steel pipes are mainly used for manufacturing high-pressure and above pressure steam boiler pipes, etc. These boiler pipes often work under high temperature and high pressure. Under the action of high-temperature flue gas and water vapor, the pipes will also undergo oxidation and corrosion. Therefore, the steel pipes are required to have high creep strength and high oxidation resistance. And it has good organizational stability, hydraulic prop pipe. Therefore, it is applied to outdoor machinery in the chemical, coal and petroleum industries with high requirements for resistance to intergranular corrosion, heat-resistant parts in building materials and parts that are difficult to heat-treat.
The chemical composition:
C | Si | Mn | P | S | Cr | Ni | Ti |
0.04-0.10 | ≤1.00 | ≤2.0 | ≤0.045 | ≤0.030 | 17.0-19.0 | 9.0-12.0 | 4(C+N)~ 0.70 |
Mechanical properties
Tensile strength (MPa) | 0.2% yield strength (Mpa) | Elongation A5(%) |
≥515 | ≥205 | ≥35 |
Density: 7.93 g/cm3
321H stainless steel pipe is a type of metal pipe used in open-air equipment in the chemical, coal and petroleum industries where high resistance to intergranular corrosion is required. It is mainly used in industrial devices and heat-resistant components of building materials in high-temperature and high-pressure corrosive environments such as boiler pipes and heat exchangers.
High-quality carbon structural steel, alloy structural steel and stainless heat-resistant steel seamless steel pipes are mainly used for manufacturing high-pressure and above pressure steam boiler pipes, etc. These boiler pipes often work under high temperature and high pressure. Under the action of high-temperature flue gas and water vapor, the pipes will also undergo oxidation and corrosion. Therefore, the steel pipes are required to have high creep strength and high oxidation resistance. And it has good organizational stability, hydraulic prop pipe. Therefore, it is applied to outdoor machinery in the chemical, coal and petroleum industries with high requirements for resistance to intergranular corrosion, heat-resistant parts in building materials and parts that are difficult to heat-treat.
The chemical composition:
C | Si | Mn | P | S | Cr | Ni | Ti |
0.04-0.10 | ≤1.00 | ≤2.0 | ≤0.045 | ≤0.030 | 17.0-19.0 | 9.0-12.0 | 4(C+N)~ 0.70 |
Mechanical properties
Tensile strength (MPa) | 0.2% yield strength (Mpa) | Elongation A5(%) |
≥515 | ≥205 | ≥35 |
Density: 7.93 g/cm3
