The ASTM A213 T22 standard encompasses seamless tubes made from ferritic and austenitic steel, designed for use in boilers, superheaters, and heat exchangers. These tubes come in designated grades such as T5, T11, T22, T91, and more. Grade T22 steel belongs to the category of 2.25Cr-1Mo low alloy steel, offering excellent thermal strength, superior oxidation resistance, resistance to hydrogen-induced corrosion, and strong welding capabilities. It finds widespread applications in high-temperature equipment, including but not limited to petrochemical installations, nuclear power facilities, and boiler systems within power plants. Today, we'll delve deeper into the attributes and uses of ASTM A213 T22 alloy steel pipes.
Equivalent Material of ASTM A213 T22 Alloy Steel Pipe:
|
UNS |
ASTM |
EN |
DIN |
JIS |
GB |
|
K11562 |
P22 |
13CrMo44 |
1.7335 |
STBA24 |
12Cr2Mo |
Chemical Composition of ASTM A213 T22 Alloy Steel Pipe:
|
Grade |
C |
Mn |
P |
S |
Si |
Cr |
Mo |
|
Gr T22 |
0.05-0.15 |
0.30-0.60 |
≤0.025 |
≤0.025 |
0.50 |
1.90-2.60 |
0.87-1.13 |
Mechanical Properties of ASTM A213 T22 Alloy Steel Pipe:
|
Material |
Tensile Strength (Mpa) |
Yield Strength (Mpa) |
Elongation(%) |
Hardness(HRB) |
|
Gr T22 |
≥415 |
≥220 |
≥30 |
≤85 |
Outside Diameter & Tolerance of ASTM A213 T22 Alloy Steel Pipe:
|
Hot Rolled |
Outside Diameter(mm) |
Tolerance(mm) |
|
OD≤101.6 |
+0.4/-0.8 |
|
|
101.6<OD≤190.5 |
+0.4/-1.2 |
|
|
190.5<OD≤228.6 |
+0.4/-1.6 |
|
|
Cold Drawn |
Outside Diameter(mm) |
Tolerance(mm) |
|
OD<25.4 |
±0.10 |
|
|
25.4≤OD≤38.1 |
±0.15 |
|
|
38.1<OD<50.8 |
±0.20 |
|
|
50.8≤OD<63.5 |
±0.25 |
|
|
63.5≤OD<76.2 |
±0.30 |
|
|
76.2≤OD≤101.6 |
±0.38 |
|
|
101.6<OD≤190.5 |
+0.38/-0.64 |
|
|
190.5<OD≤228.6 |
+0.38/-1.14 |
Wall Thickness & Tolerance of ASTM A213 T22 Alloy Steel Pipe:
|
Hot Rolled |
Outside Diameter(mm) |
Tolerance,% |
|
OD≤101.6,WT≤2.4 |
+40/-0 |
|
|
OD≤101.6.2.4<WT≤3.8 |
+35/-0 |
|
|
OD≤101.6.3.8<WT≤4.6 |
+33/-0 |
|
|
OD≤101.6.WT>4.6 |
+28/-0 |
|
|
OD>101.6.2.4<WT<3.8 |
+35/-0 |
|
|
OD>101.6,3.8<WT<4.6 |
+33/-0 |
|
|
OD>101.6.WT>4.6 |
+28/-0 |
|
|
Cold Drawn |
Outside Diameter(mm) |
Tolerance,% |
|
OD≤38.1 |
+20/-0 |
|
|
OD>38.1 |
+22/-0 |
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