JIS G3462 Alloy Boiler Tubes
Oct 27, 2023
Heat treatment of JIS G3462 STBA23 Alloy boiler and heat exchanger tubes
| STBA23 |
Chemical Composition of JIS G3462 STBA23
| Standard:JIS G3462 | ||||||||
| C | P | S | ||||||
| STBA23 | Less than or equal to 0.15 | 0.50-1.00 | 0.30-0.60 | Less than or equal to 0.030 | Less than or equal to 0.030 | 1.00-1.50 | 0.45-0.65 | |
Mechanical Properties of JIS G3462 STBA23
N/mm 2 |
N/mm 2 |
||||||
| Under 10 mm | 10 mm or over to and excl. 20 mm | 20 mm or over | |||||
| No. 11 test piece | No. 11 test piece | No. 11 test piece or No.12 test piece | No.4 test piece | No.14A test piece | |||
| STBA23 | 410 min. | 205 min. | 22 min. | 25 min. | 30 min. | 24 min. | 21 min. |
| Under 100 | 100 or over | Under 40 | 40 or over | Under 40 | 40 or over | |||
| Under 2 | --- | --- | +0.4mm | +22 0 |
+0.3 | +18 0 |
||
| 0 | 0 | |||||||
| 2 or over to and excl. 2.4 | +40 | --- | +20 0 |
+18 0 |
||||
| 0 | ||||||||
| 2.4 or over to or excl. 3.8 | +35 | +35 | ||||||
| 0 | 0 | |||||||
| 3.8 or over to or excl. 4.6 | +33 | +33 | ||||||
| 0 | 0 | |||||||
| 4.6 or over | +28 | +28 | ||||||
| 0 | 0 | |||||||
% |
--- | Within 22.8 of wall thickness | --- | --- | ||||
