AT243296B - Austenitic chromium-manganese-nitrogen steels for the manufacture of objects resistant to stress corrosion cracking - Google Patents
Austenitic chromium-manganese-nitrogen steels for the manufacture of objects resistant to stress corrosion crackingInfo
- Publication number
- AT243296B AT243296B AT112262A AT112262A AT243296B AT 243296 B AT243296 B AT 243296B AT 112262 A AT112262 A AT 112262A AT 112262 A AT112262 A AT 112262A AT 243296 B AT243296 B AT 243296B
- Authority
- AT
- Austria
- Prior art keywords
- manganese
- stress corrosion
- corrosion cracking
- steels
- manufacture
- Prior art date
Links
- 230000007797 corrosion Effects 0.000 title claims description 10
- 238000005260 corrosion Methods 0.000 title claims description 10
- 229910000831 Steel Inorganic materials 0.000 title claims description 8
- 238000005336 cracking Methods 0.000 title claims description 8
- 239000010959 steel Substances 0.000 title claims description 8
- GJPVPJBNBCITNZ-UHFFFAOYSA-N [N].[Mn].[Cr] Chemical compound [N].[Mn].[Cr] GJPVPJBNBCITNZ-UHFFFAOYSA-N 0.000 title claims description 5
- 238000004519 manufacturing process Methods 0.000 title claims description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 3
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 229910052804 chromium Inorganic materials 0.000 claims description 3
- 239000011651 chromium Substances 0.000 claims description 3
- 229910052748 manganese Inorganic materials 0.000 claims description 3
- 239000011572 manganese Substances 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 2
- 229910052757 nitrogen Inorganic materials 0.000 claims description 2
- 229910052710 silicon Inorganic materials 0.000 claims description 2
- 239000010703 silicon Substances 0.000 claims description 2
- 229910052720 vanadium Inorganic materials 0.000 claims description 2
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims description 2
- 239000000956 alloy Substances 0.000 claims 1
- 229910045601 alloy Inorganic materials 0.000 claims 1
- 230000000694 effects Effects 0.000 description 2
- XCNJCXWPYFLAGR-UHFFFAOYSA-N chromium manganese Chemical compound [Cr].[Mn].[Mn].[Mn] XCNJCXWPYFLAGR-UHFFFAOYSA-N 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/16—Drill collars
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Heat Treatment Of Steel (AREA)
Description
<Desc/Clms Page number 1>
Austenitische Chrom-Mangan-Stickstoff-Stähle zur Herstellung von gegen Spannungsriss- korrosion beständigen Gegenständen
Das Stammpatent Nr. 233038 betrifft die Verwendung austenitischer korrosionsbeständiger ChromMangan-Stickstoff-Stähle mit bis 0, 60% Kohlenstoff, bis maximal 2, 00% Silizium, 10, 00-20, 00% Chrom, 8, 00-22, 00% Mangan, 0, 05 bis maximal 0, 50% Stickstoff, 0 bis maximal 2, 50% Nickel, zur Herstellung von gegen Spannungsrisskorrosion beständigen Gegenständen.
Wie Versuche ergeben haben, erweisen sich Stähle mit einem gegenüber dem Stammpatent verringerten Chromgehalt bei gleichzeitiger Erhöhung des Mindestanteiles an Mangan als sehr beständig gegen die Einflüsse der Spannungsrisskorrosion. Von Vorteil ist es noch, diesen Chrom-Mangan-Stickstoff-Stählen gegebenenfalls bis maximal 1, 00% Vanadin zuzusetzen und den Kohlenstoffgehalt auf 0, 70% zu erweitern, wodurch sich eine Erhöhung des Streckgrenzenverhältnisses ergibt.
Den Gegenstand der Erfindung bildet somit die Verwendung von austenitischen Chrom-Mangan-
EMI1.1
da die Beständigkeit gegen Spannungsrisskorrosion hinsichtlich der zerstörenden Wirkung wesentlich stärker in Erscheinung tritt. Das Unbrauchbarwerden auf Grund der abtragenden allgemeinen Korrosion übt in solchen Fällen auf die Lebensdauer keinen nennenswerten Einfluss aus, während die durch die Spannungsrisskorrosion entstehenden Schädigungen ein rasches Unbrauchbarwerden verursachen können. Kommt in diesem Zusammenhang auch den erhöhten Festigkeitswerten Bedeutung zu, dann steht es ausser Zweifel, dass Stählen mit den erfindungsgemässen Eigenschaften in Anwendungsfällen, bei denen es vor allem auf erhöhte Beständigkeit gegen Spannungsrisskorrosion ankommt, der Vorzug gegeben wird.
**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.
<Desc / Clms Page number 1>
Austenitic chromium-manganese-nitrogen steels for the production of objects resistant to stress corrosion cracking
The parent patent No. 233038 relates to the use of austenitic, corrosion-resistant chromium-manganese-nitrogen steels with up to 0.60% carbon, up to a maximum of 2.00% silicon, 10.00-20.00% chromium, 8.00-22.00% manganese 0.05 to a maximum of 0.50% nitrogen, 0 to a maximum of 2.50% nickel, for the production of objects resistant to stress corrosion cracking.
As tests have shown, steels with a lower chromium content than in the parent patent with a simultaneous increase in the minimum proportion of manganese prove to be very resistant to the effects of stress corrosion cracking. It is also advantageous to add up to a maximum of 1.00% vanadium to these chromium-manganese-nitrogen steels, if necessary, and to expand the carbon content to 0.70%, which results in an increase in the yield strength ratio.
The subject of the invention thus forms the use of austenitic chromium-manganese
EMI1.1
since the resistance to stress corrosion cracking is much more apparent in terms of the destructive effect. In such cases, the fact that it becomes unusable due to the erosive general corrosion does not have any appreciable effect on the service life, while the damage caused by stress corrosion cracking can quickly become unusable. If the increased strength values are also important in this context, then there is no doubt that steels with the properties according to the invention are preferred in applications where increased resistance to stress corrosion cracking is important.
** WARNING ** End of DESC field may overlap beginning of CLMS **.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT112262A AT243296B (en) | 1962-02-12 | 1962-02-12 | Austenitic chromium-manganese-nitrogen steels for the manufacture of objects resistant to stress corrosion cracking |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT233038D | |||
| AT112262A AT243296B (en) | 1962-02-12 | 1962-02-12 | Austenitic chromium-manganese-nitrogen steels for the manufacture of objects resistant to stress corrosion cracking |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AT243296B true AT243296B (en) | 1965-11-10 |
Family
ID=25594958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT112262A AT243296B (en) | 1962-02-12 | 1962-02-12 | Austenitic chromium-manganese-nitrogen steels for the manufacture of objects resistant to stress corrosion cracking |
Country Status (1)
| Country | Link |
|---|---|
| AT (1) | AT243296B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0070764A1 (en) * | 1981-07-10 | 1983-01-26 | Creusot-Loire | Amagnetic drill collar made from precipitation-hardenable austenitic steels |
-
1962
- 1962-02-12 AT AT112262A patent/AT243296B/en active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0070764A1 (en) * | 1981-07-10 | 1983-01-26 | Creusot-Loire | Amagnetic drill collar made from precipitation-hardenable austenitic steels |
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