ASTM A213 Seamless Alloy Steel Boiler Tube For Heat-Exchanger

Instruction

ASTM A213 Seamless Alloy Steel Boiler Tube For Heat-Exchanger

 

Material
The ASTM A213 specification covers seamless ferritic and austenitic alloy steel boiler tubes for high-temperature service. These tubes are commonly used in heat-exchangers and are designed to withstand high pressure and temperature conditions.

 

Specification
The ASTM A213 specification provides guidelines for the chemical composition, mechanical properties, and physical properties of the alloy steel boiler tubes. The specification ensures that the tubes meet the necessary requirements for their intended application.

 

Chemical Composition
The chemical composition of the ASTM A213 alloy steel boiler tubes is as follows:

Element	Composition Range (%)
Carbon (C)	0.05 - 0.15
Manganese (Mn)	0.30 - 0.60
Phosphorus (P)	0.025 (max)
Sulfur (S)	0.025 (max)
Silicon (Si)	0.50 - 1.00
Chromium (Cr)	1.00 - 1.50
Molybdenum (Mo)	0.44 - 0.65
Nickel (Ni)	0.50 (max)

 

Mechanical Properties
The mechanical properties of the ASTM A213 alloy steel boiler tubes are as follows:

Property	Minimum Value
Tensile Strength	415 MPa
Yield Strength	220 MPa
Elongation	30% (min)
Hardness	85 HRB (max)
Impact Toughness	27 J (min)

 

Physical Properties
The physical properties of the ASTM A213 alloy steel boiler tubes are as follows:

Property	Value
Density	7.85 g/cm³
Melting Point	1420 - 1465°C
Thermal Conductivity	26 W/(m·K)
Electrical Conductivity	1.25 %IACS (min)

 

Process Performance
The ASTM A213 alloy steel boiler tubes exhibit excellent process performance, making them suitable for high-temperature applications. They have good weldability, formability, and can withstand thermal cycling without significant degradation in performance.

 

Application
The ASTM A213 seamless alloy steel boiler tubes are widely used in heat-exchangers, power plants, refineries, and other industrial applications where high-temperature and high-pressure conditions are present. These tubes provide efficient heat transfer and ensure reliable operation in demanding environments.