ASTM A192 boiler tube is a seamless carbon steel tube standard used to manufacture heating surface tubes, headers, economizers, superheaters, reheaters and other components of high-pressure boilers.
ASTM A192 covers minimum-wall-thickness, seamless carbon steel boiler, and superheater tubes for high-pressure service.The tubing sizes and thicknesses usually furnished to this specification are 1/2 in. to 7 in(12.7 to 177.8 mm) outside diameter and 0.085 to 1.000 in(2.2 to 25.4 mm), inclusive, in minimum wall thickness.
It is often suitable for high-pressure boilers with working pressure not greater than 9.8MPa and working temperature between450℃~650℃.
ASTM A192 High-Pressure Carbon Steel Boiler Tube Chemical Composition:
|
Grade |
Chemical composition(%) |
|||||
|
C |
Type |
C |
Si |
Mn |
P | S |
|
ASTM A192 |
S=Seamless |
0.06~0.18 |
0.25Max |
0.27~0.63 |
0.035Max |
0.035Max |
A192 Boiler Tube Mechanical Property:
|
Grade |
Elongation % |
Tensile Test MPa or N/mm2 |
|
|
A |
Min Yield Strength |
Tensile Strength | |
|
ASTM A192 |
=35 |
=180 |
=325 |
ASTM A192 steel tube for Boiler Hardness Requirement:
|
Brinell Hardness Number |
Rockwell Hardness Number |
|
(Tubes 0.200 in. [5.1 mm] and over in wall thickness) |
(Tubes less than 0.200 in. [5.1 mm] in wall thickness) |
|
137 HB |
77 HRB |
