|
| PRODUCTION |
Standard Specification
for seamless ferritic alloy steel boiler,
superheater and heat-exchanger pipes. |
ASTM
A 213/A 213 M - 04b
Steel grade:
T5, T11, T22
|
| External
diameter |
Wall
thickness |
| mm |
inch |
BWG |
mm |
inch |
| 12,70 |
1/2 |
13 |
2,413 |
0,095 |
| 15,88 |
5/8 |
14 |
2,108 |
0,083 |
| 19,05 |
3/4 |
15 |
1,829 |
0,072 |
| 22,23 |
7/8 |
16 |
1,651 |
0,065 |
| 25,40 |
1 |
17 |
1,473 |
0,058 |
| 31,25 |
1 1/4 |
18 |
1,244 |
0,049 |
| 38,10 |
1 1/2 |
19 |
1,067 |
0,042 |
| 50,80 |
2 |
20 |
0,889 |
0,035 |
| |
|
21 |
0,812 |
0,032 |
| |
|
22 |
0,711 |
0,028 |
| |
|
23 |
0,635 |
0,025 |
| |
|
24 |
0,559 |
0,022 |
| |
|
25 |
0,508 |
0,020 |
|
Chemical
Composition
Steel
Grade
|
Carbon |
Manganese |
Phosphorus |
Sulfur |
Silicon |
Chromium |
Molybdenum |
| T 5 |
0,15 |
0,30-0,60 |
0,025 |
0,025 |
0,50 |
4,00-6,00 |
0,45-0,65 |
| T 11 |
0,05-0,15 |
0,30-0,60 |
0,025 |
0,025 |
0,50-1,00 |
1,00-1,50 |
0,44-0,65 |
| T 22 |
0,05-0,15 |
0,30-0,60 |
0,025 |
0,025 |
0,50 |
1,90-2,60 |
0,87-1,13 |
| |
|
|
|
|
|
|
|
|
Mechanical Properties
Steel
Grade
|
Tensile Strength (MPa) |
Yield Strength
(MPa)
|
Elongation,
%
|
Brinell hardness, max (HB) |
| T 5 |
415 |
205 |
30 |
179 |
| T 11 |
415 |
220 |
30 |
163 |
| T 22 |
510 |
400 |
20 |
220 |
| |
|
|
|
|
|
| |
|
|
