1. What is the primary application of ASTM SA192 steel pipe?
ASTM SA192 is a specification for seamless carbon steel boiler tubes primarily used in high-pressure, high-temperature service. Its main applications include water-tube boilers, steam generators, superheaters, and heat exchangers in power plants, industrial boilers, and petrochemical facilities where it transports steam or hot water under extreme pressure (up to 3000 psi) and temperature (up to 900°F/482°C) conditions.
2. What is the chemical composition range of ASTM SA192 steel?
The key chemical composition (by weight, max unless specified) follows ASTM A192/A192M standards:
Carbon (C): 0.28%
Manganese (Mn): 1.35%
Phosphorus (P): 0.035%
Sulfur (S): 0.035%
Silicon (Si): 0.15–0.35%
Copper (Cu): 0.30% (max)
Nickel (Ni): 0.40% (max)
Chromium (Cr): 0.30% (max)
Molybdenum (Mo): 0.15% (max)
Vanadium (V): 0.08% (max)
3. What are the standard sizes (outer diameter and wall thickness) for ASTM SA192?
ASTM SA192 covers seamless tubes with:
Outer Diameter (OD): 0.500" to 8.625" (12.7 mm to 219.08 mm)
Wall Thickness (WT): 0.065" to 0.500" (1.65 mm to 12.7 mm)
Length: Typically 20 ft (6.096 m) or 40 ft (12.192 m), with custom lengths available upon request.
4. What is the minimum tensile strength and yield strength of ASTM SA192?
Per ASTM A192/A192M, the mechanical properties (after heat treatment) are:
Tensile Strength: Minimum 60 ksi (414 MPa)
Yield Strength: Minimum 30 ksi (207 MPa)
Elongation: Minimum 30% (in 2")
5. Is ASTM SA192 a seamless or welded pipe specification?
ASTM SA192 exclusively covers seamless carbon steel tubes. Welded tubes for similar boiler applications are specified under other standards (e.g., ASTM A210 for seamless/welded, ASTM A285 for welded pressure vessel plates).
