What steel withstands high temperature?
What steel is resistant to high temperatures? The variety of steel is complicated, but the function is not exactly the same. Generally, we call the high temperature resistant steels "heat resistant steel". Heat-resistant steel is a type of steel that has oxidation resistance and high temperature strength and excellent heat resistance under high temperature conditions.
Heat-resistant steel is commonly used in the manufacture of components operating at high temperatures in industrial sectors such as boilers, steam turbines, power machinery, industrial furnaces, and aerospace and petrochemical industries. In addition to high temperature strength and high temperature oxidation resistance, these parts require satisfactory resistance, excellent workability and weldability, and certain arrangement stability depending on the application.
Heat-resistant steel can be divided into two types according to its function: anti-oxidation steel and heat-strength steel. Anti-oxidation steel is also referred to as stainless steel. Heat-strength steel is a steel that has excellent oxidation resistance at high temperatures and has high high-temperature strength.
Heat-resistant steel can be divided into austenitic heat-resistant steel, martensitic heat-resistant steel, ferritic heat-resistant steel and pearlitic heat-resistant steel according to its normalizing arrangement.
Austenitic heat-resistant steel contains a large amount of austenite constituent elements such as nickel, manganese and nitrogen. When it is above 600 °C, it has good high-temperature strength and arrangement stability. It has excellent welding function and is generally used at temperatures above 600 °C. The heat of the work.
The martensitic heat-resistant steel generally has a chromium content of 7 to 13%, and has a high high temperature strength, oxidation resistance and water vapor corrosion resistance below 650 ° C, but the weldability is poor.
Ferritic heat-resistant steel contains more elements such as chromium, aluminum and silicon, which constitute a single-phase ferrite arrangement. It has outstanding resistance to oxidation and high temperature gas corrosion, but low temperature strength and high room temperature brittleness. , poor weldability.
The pearlitic heat-resistant steel alloy elements are mainly chromium and molybdenum, and the total amount generally does not exceed 5%. It is arranged in addition to pearlite, ferrite, and bainite. This type of steel has excellent high temperature strength and process function at 500 to 600 ° C, and its price is low. It is widely used to manufacture heat-resistant parts up to 600 ° C. Such as boiler steel pipe, steam turbine impeller, rotor, fasteners and high pressure vessels, pipes and so on.
Heat-resistant steel is commonly used in the manufacture of components operating at high temperatures in industrial sectors such as boilers, steam turbines, power machinery, industrial furnaces, and aerospace and petrochemical industries. In addition to high temperature strength and high temperature oxidation resistance, these parts require satisfactory resistance, excellent workability and weldability, and certain arrangement stability depending on the application.
Heat-resistant steel can be divided into two types according to its function: anti-oxidation steel and heat-strength steel. Anti-oxidation steel is also referred to as stainless steel. Heat-strength steel is a steel that has excellent oxidation resistance at high temperatures and has high high-temperature strength.
Heat-resistant steel can be divided into austenitic heat-resistant steel, martensitic heat-resistant steel, ferritic heat-resistant steel and pearlitic heat-resistant steel according to its normalizing arrangement.
Austenitic heat-resistant steel contains a large amount of austenite constituent elements such as nickel, manganese and nitrogen. When it is above 600 °C, it has good high-temperature strength and arrangement stability. It has excellent welding function and is generally used at temperatures above 600 °C. The heat of the work.
The martensitic heat-resistant steel generally has a chromium content of 7 to 13%, and has a high high temperature strength, oxidation resistance and water vapor corrosion resistance below 650 ° C, but the weldability is poor.
Ferritic heat-resistant steel contains more elements such as chromium, aluminum and silicon, which constitute a single-phase ferrite arrangement. It has outstanding resistance to oxidation and high temperature gas corrosion, but low temperature strength and high room temperature brittleness. , poor weldability.
The pearlitic heat-resistant steel alloy elements are mainly chromium and molybdenum, and the total amount generally does not exceed 5%. It is arranged in addition to pearlite, ferrite, and bainite. This type of steel has excellent high temperature strength and process function at 500 to 600 ° C, and its price is low. It is widely used to manufacture heat-resistant parts up to 600 ° C. Such as boiler steel pipe, steam turbine impeller, rotor, fasteners and high pressure vessels, pipes and so on.
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