ASTM A269 Ryðfrítt stálrör
Nov 23, 2023
ASTM A269 forskrift nær yfir óaðfinnanlega og soðið austenítískt stálpípa fyrir almenna tæringarþol og lág- eða háhitanotkun. Öll efni skulu afhent í hitameðhöndluðu ástandi og uppfylla kröfur um efnasamsetningu. Forskriftin setur fram mismunandi vélrænni prófunarkröfur, þar á meðal blossapróf, flanspróf, hörkupróf og öfug fletjapróf. Auk þess skal hvert rör gangast undir óeyðandi rafmagnsprófun eða vatnsstöðuprófun.
| Einkunn | Samsetning, % | ||||||||||||||
| KLÓSETTPAPPÍR XM-29 |
. . . | . . . | . . . | . . . | . . . | . . . | . . . | . . . | . . . | . . . | . . . | . . . | . . . | . . . | |
| UNS tilnefningA | S24000 | S31254 | S31266 | S31725 | S31726 | S31727 | S32053 | S30600A | S32654 | S34565 | S35045 | N08367 | N08925 | N08926 | N08904 |
| Kolefni | 0.08 | 0.020 | 0.030 hámark |
0.035 | 0.035 | 0.030 | 0.030 | 0.018 | 0.020 | 0.030 | 0.06– 0.10 |
0.030 | 0.020 | 0.020 | 0.020 |
| Mangan | 11.5– 14.5 |
1.00 | 2.00–4.00 | 2.00 | 2.00 | 1.00 | 1.00 | 2.0 | 2.0– 4.0 |
5.0– 7.0 |
1.50 | 2.00 | 1.00 | 2.00 | 2.00 |
| Fosfór | 0.060 | 0.030 | 0.035 | 0.045 | 0.045 | 0.030 | 0.030 | 0.020 | 0.030 | 0.030 | 0.045 | 0.040 | 0.045 | 0.030 | 0.040 |
| Brennisteinn. | 0.030 | 0.015 | 0.020 | 0.030 | 0.030 | 0.030 | 0.010 | 0.020 | 0.005 | 0.010 | 0.015 | 0.030 | 0.030 | 0.010 | 0.030 |
| Kísill | 1.00 | 0.80 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 3.7–4.3 | 0.50 | 1.00 | 1.00 | 1.00 | 0.50 | 0.50 | 1.00 |
| Nikkel | 2.3– 3.7 |
17.5– 18.5 |
21.0–24.0 | 13.5– 17.5 |
14.5– 17.5 |
14.5– 16.5 |
24.0– 26.0 |
14.0– 15.5 |
21.0– 23.0 |
16.0– 18.0 |
32.0– 37.0 |
23.5– 25.5 |
24.0–26.0 | 24.0– 26.0 |
23.0– 28.0 |
| Króm | 17.0– 19.0 |
19.5– 20.5 |
23.0–25.0 | 18.0– 20.0 |
17.0– 20.0 |
17.5– 19.0 |
22.0– 24.0 |
17.0– 18.5 |
24.0– 25.0 |
23.0– 25.0 |
25.0– 29.0 |
20.0– 22.0 |
19.0–21.0 | 19.0– 21.0 |
19.0– 23.0 |
| Mólýbden | ... | 6.0– 6.5 |
5.2–6.2 | 4.0– 5.0 |
4.0– 5.0 |
3.8– 4.5 |
5.0– 6.0 |
0.20 hámark |
7.0– 8.0 |
4.0– 5.0 |
6.0– 7.0 |
6.0–7.0 | 6.0– 7.0 |
4.0– 5.0 |
|
| Títan | . . . | . . . | . . . | . . . | . . . | . . . | . . . | . . . | . . . | . . . | 0.15– 0.60 |
. . . | . . . | . . . | . . . |
| Kólumbía | . . . | . . . | . . . | . . . | . . . | . . . | . . . | . . . | . . . | 0.10 hámark |
. . . | . . . | . . . | . . . | . . . |
| Tantal | . . . | . . . | . . . | . . . | . . . | . . . | . . . | . . . | . . . | . . . | . . . | . . . | . . . | ||
| Köfnunarefni F | 0.20– 0.40 |
0.18– 0.25 |
0.35–0.60 | 0.20 hámark |
0.10– 0.20 |
0.15– 0.21 |
0.17– 0.22 |
0.45– 0.55 |
0.40– 0.60 |
. . . | 0.18– 0.25 |
0.10–0.20 | 0.15– 0.25 |
0.10 hámark |
|
| Vanadíum | . . . | . . . | . . . | . . . | . . . | . . . | . . . | . . . | . . . | . . . | |||||
| Kopar | . . . | 0.50– 1.00 |
1.00–2.50 | . . . | . . . | 2.8– 4.0 |
. . . | 0.50 hámark |
0.30– 0.60 |
. . . | 0.75 | 0.75 hámark |
0.80–1.50 | 0.50– 1.50 |
1.00– 2.00 |
| Aðrir | . . . | . . . | W 1.50–2.50 | . . . | . . . | . . . | . . . | . . . | . . . | . . . | Al 0.15– 0.60 |
. . . | . . . | . . . | . . . |
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