EP1052304B1 - Martensitischer korrosionsbeständiger Chromstahl - Google Patents
Martensitischer korrosionsbeständiger Chromstahl Download PDFInfo
- Publication number
- EP1052304B1 EP1052304B1 EP00890145A EP00890145A EP1052304B1 EP 1052304 B1 EP1052304 B1 EP 1052304B1 EP 00890145 A EP00890145 A EP 00890145A EP 00890145 A EP00890145 A EP 00890145A EP 1052304 B1 EP1052304 B1 EP 1052304B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- weight
- maximum
- leg
- chromium steel
- nitrogen
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/001—Ferrous alloys, e.g. steel alloys containing N
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/002—Heat treatment of ferrous alloys containing Cr
Definitions
- the invention relates to a corrosion resistant chromium steel with 12 to 15 Wt .-% chromium.
- EPC is a steel, which consists of (in% by weight) 0.30% carbon, 0.12% nitrogen, 0.30% silicon, 0.42% Manganese, 13.4% chromium, 0.28% nickel, balance iron and unavoidable impurities and has a martensite of 98.2% by volume.
- a high-strength corrosion-resistant material was used Steel with the best spring and fatigue characteristics and high Stress corrosion cracking resistance proposed.
- Hv 400 to 550.
- JP-A-8060238 is a martensitic corrosion resistant steel with best Hot workability and high resistance to sulfide-induced stress cracking known.
- the steel consists of% by weight 0.1 to 0.3 C, 0.01 to 1.0 Si, 0.1 to 1.0 Mn, ⁇ 0.02 P, ⁇ 0.01 S, 11 to 14 Cr, ⁇ 0.05 Ni and 0.015 to 0.1 N or 0.001 to 0.3 Ca and / or Mg and / or SE (REM), wherein the Condition 13 x C + 11.5 x N - Cr ⁇ - 10.86 must be fulfilled.
- the invention is now the task of an economical chrome steel specify a high hardness and temperature resistance at low Corrosive attack, a homogeneous microstructure and improved polishability has.
- a morphologically favorable microstructure in which the matrix hardness is a has high resistance, is characterized by a lack of strong nitride formers, such as was found promoted, with the elements titanium, aluminum, niobium and vanadium are unfavorably effective.
- an aluminum content below 0.05 wt .-% is provide, so as not to tilt the fine-homogeneous Microstructure towards a formation of heterogeneous areas too enable.
- chrome steel can be achieved when the concentration of carbon is 0.25 to 0.30 wt%.
- the concentration of nitrogen is 0.07 to 0.15 Wt .-%, preferably 0.08 to 0.12 wt .-%, is certainly one outstanding polishability of the material with favorable mechanical and corrosion-chemical parameters adjustable.
- the material quality can be further increased according to the invention if the chromium steel has a maximum concentration of molybdenum plus (tungsten x 0.5) of not more than 0.20 and / or the highest contents Titanium 0.01, preferably 0.006% by weight Aluminum 0.05, preferably 0.025% by weight Niobium 0.01 preferably 0.006% by weight be.
- Table 1 lists tested materials with their chemical composition.
- the alloy 1 corresponds to DIN material number 1.2082, the alloys 6 and 9 correspond to the material number 1.2083, the alloy 7 corresponds to the Material number 1.4028 and finally alloy 12 is the material number 1.2316 to assign. These DIN materials are for comparison with the alloy composition according to the invention.
- Tab. 2 shows for the listed alloys from Table 1 the results in terms of mechanical properties, corrosion resistance, polishability and dimensional stability in the heat treatment for comparative analysis, wherein for the overall assessment of the material properties, a ratio was determined, indicating the material quality can serve.
- the trial alloy 4 yielded, apparently due to the high Nitrogen content, a porous or leaky block structure and must in the to be left out of comparative consideration.
- Fig. 2 shows the dependence of the hardness of the annealing time and gives a very good long-term behavior of a leg according to the invention.
- 3 at 550 ° C, that is, one particular suitability of this material for higher loads Working temperatures over long periods, such as in Glaspreßformen given is. This favorable material property can be economically advantageous for Reduced cycle time are used, that is, with the same service life of Tool is this at a higher temperature in use.
- Fig. 3 is comparative to standard alloys, the corrosion resistance of Leg. 3 shown.
- the inventive alloy 3 reaches the Corrosion resistance of a 17% chromium steel (material number 1.2316).
- Fig. 5 is apparent from comparative polishing ability studies the advantage of an alloy 3 according to the invention is shown, in particular has this favorable property due to a special structural homogeneity.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Powder Metallurgy (AREA)
- Treatment Of Steel In Its Molten State (AREA)
- Heat Treatment Of Steel (AREA)
- Heat Treatment Of Articles (AREA)
- Laminated Bodies (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Description
Titan 0,01, | vorzugsweise 0,006 Gew.-% |
Aluminium 0,05, | vorzugsweise 0,025 Gew.-% |
Niob 0,01 | vorzugsweise 0,006 Gew.-% |
Legierung | C | Si | Mn | Cr | Mo | Ni | V | W | Ti | Al | Nb | N |
1 | 0,21 | 0,25 | 0,29 | 13,01 | 0,01 | 0,08 | 0,02 | <0,05 | n.b. | 0,02 | n.b. | 0,05 |
2 | 0,20 | 0,25 | 0,32 | 12,87 | 0,03 | 0,10 | 0,01 | <0,05 | n.b. | 0,02 | n.b. | 0,11 |
3* | 0,31 | 0,27 | 0,31 | 12,96 | 0,02 | 0,09 | n.b. | <0,05 | <0,005 | 0,02 | n.b. | 0,12 |
4 | 0,30 | 0,31 | 0,32 | 13,03 | <0,02 | 0,10 | 0,03 | 0,05 | <0,005 | 0,02 | 0,02 | 0,16 |
5 | 0,32 | 0,26 | 0,32 | 12,92 | <0,02 | 0,10 | n.b. | <0,005 | <0,005 | 0,02 | n.b. | 0,21 |
6 | 0,40 | 0,44 | 0,30 | 12,97 | <0,02 | 0,08 | n.b. | n.b. | n.b. | n.b. | n.b. | 0,01 |
7 | 0,31 | 0,35 | 0,31 | 13,01 | 0,08 | 0,09 | n.b. | n.b. | n.b. | n.b. | n.b. | 0,01 |
8 | 0,33 | 0,46 | 0,26 | 12,67 | 0,10 | 0,2 | n.b. | 0,05 | n.b. | 0,03 | n.b. | 0,01 |
9 | 0,39 | 0,28 | 0,29 | 13,02 | 0,03 | 0,3 | 0,02 | n.b. | n.b. | n.b. | n.b. | 0,06 |
10* | 0,40 | 0,31 | 0,31 | 12,98 | 0,06 | 0,10 | n.b. | n.b. | n.b. | n.b. | n.b. | 0,11 |
11 | 0,41 | 0,27 | 0,29 | 12,99 | 0,06 | 0,09 | n.b. | n.b. | n.b. | n.b. | n.b. | 0,14 |
12 | 0,35 | 0,31 | 0,35 | 16,51 | 1,10 | 0,78 | 0,03 | 0,06 | n.b. | n.b. | 0,006 | 0,02 |
13 | 0,36 | 0,25 | 0,31 | 16,72 | 1,12 | 0,76 | 0,03 | 0,05 | n.b. | n.b. | n.b. | 0,18 |
Legierung | Mech. Eigensch. [%] | Kormsionsbest. [%] | Poliertoarkelt [%] | Maßänderungsst [%] | Kennzahl | Bemerkung |
1 | 60 | 60 | 120 | 90 | 3,3 | DIN 1.2082 |
2 | 70 | 70 | 110 | 100 | 3,5 | Versuchleg. |
3* | 160 | 100 | 160 | 140 | 5,6 | Versuchleg. |
4 | -- | -- | -- | -- | -- | Versuchleg. |
5 | 80 | 120 | 120 | 100 | 4,2 | Versuchleg. |
6 | 100 | 50 | 60 | 80 | 2,9 | DIN 1.2083, |
7 | 90 | 60 | 100 | 100 | 3,5 | DIN 1.4028, |
8 | 95 | 70 | 100 | 100 | 3,7 | Versuchleg. |
9 | 110 | 50 | 70 | 80 | 3,1 | DIN 1.2083, |
10* | 120 | 70 | 80 | 90 | 3,6 | Versuchleg. |
11 | 110 | 80 | 70 | 70 | 3,3 | Versuchleg. |
12 | 70 | 100 | 40 | 50 | 2,6 | DIN 1.2316, |
13 | 70 | 160 | 50 | 60 | 3,4 | Versuchleg. |
Claims (4)
- Martensitischer korrosionsbeständiger Chromstahl enthaltend in Gew.-%
0,2 bis 0,4 % Kohlenstoff 0,15 bis 0,5 % Silizium 0,15 bis 0,6 % Mangan 12,0 bis 15,0 % Chrom wahlweise max.0,01 % Titan wahlweise max. 0,05 % Aluminium wahlweise max. 0,01 % Niob max. 0,28 % Nickel 0,07 bis 0,15 % Stickstoff - Chromstahl nach Anspruch 1, dadurch gekennzeichnet, dass die Konzentration an Kohlenstoff 0,25 bis 0,30 Gew.-% beträgt.
- Chromstahl nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Konzentration an Stickstoff 0,08 bis 0,12 Gew.-%, beträgt.
- Chromstahl nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die maximale Konzentration an
Titan 0,006 Gew.-% Aluminium 0,025 Gew.-% Niob 0,006 Gew.-%
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT0084399A AT407647B (de) | 1999-05-10 | 1999-05-10 | Martensitischer korrosionsbeständiger chromstahl |
AT84399 | 1999-05-10 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1052304A1 EP1052304A1 (de) | 2000-11-15 |
EP1052304B1 true EP1052304B1 (de) | 2005-12-28 |
Family
ID=3501056
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00890145A Expired - Lifetime EP1052304B1 (de) | 1999-05-10 | 2000-05-09 | Martensitischer korrosionsbeständiger Chromstahl |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP1052304B1 (de) |
AT (2) | AT407647B (de) |
DE (1) | DE50011941D1 (de) |
DK (1) | DK1052304T3 (de) |
ES (1) | ES2254128T3 (de) |
HK (1) | HK1034542A1 (de) |
PT (1) | PT1052304E (de) |
SI (1) | SI1052304T1 (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8808472B2 (en) * | 2000-12-11 | 2014-08-19 | Uddeholms Ab | Steel alloy, holders and holder details for plastic moulding tools, and tough hardened blanks for holders and holder details |
AT501794B1 (de) * | 2005-04-26 | 2008-06-15 | Boehler Edelstahl | Kunststoffform |
AT515157B1 (de) * | 2013-11-21 | 2016-12-15 | Böhler Edelstahl GmbH & Co KG | Verfahren zur Herstellung von Kunststoffformen aus martensitischem Chromstahl und Kunststoffform |
WO2015124169A1 (de) | 2014-02-18 | 2015-08-27 | Schmiedewerke Gröditz Gmbh | CHROMSTAHL FÜR STARK VERSCHLEIßBEANSPRUCHTE MASCHINENTEILE, INSBESONDERE PELLETIERMATRIZEN |
CN109207856B (zh) * | 2018-10-17 | 2020-04-14 | 攀钢集团攀枝花钢铁研究院有限公司 | 含氮塑料模具扁钢及其生产方法 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56151149A (en) * | 1980-04-23 | 1981-11-24 | Kubota Ltd | Assembling type roll for continuous casting of slab |
AT377785B (de) * | 1983-06-28 | 1985-04-25 | Ver Edelstahlwerke Ag | Chromhaeltige legierung |
EP0273973B1 (de) * | 1986-03-04 | 1992-06-24 | Kawasaki Steel Corporation | Rostfreier martensit-stahl mit ausgezeichneter oxydationsbeständigkeit, verarbeitbarkeit und korrosionsbeständigkeit sowie herstellungsverfahren |
JPH04325658A (ja) * | 1991-04-24 | 1992-11-16 | Daido Steel Co Ltd | 耐熱鋳鋼 |
US5458703A (en) * | 1991-06-22 | 1995-10-17 | Nippon Koshuha Steel Co., Ltd. | Tool steel production method |
DE4133480A1 (de) * | 1991-10-09 | 1993-04-15 | Boehler Ag | Nichtrostender chromlegierter stahl fuer kunststofformen |
JPH07278758A (ja) * | 1994-04-13 | 1995-10-24 | Nippon Steel Corp | エンジンガスケット用ステンレス鋼とその製造方法 |
JPH0860238A (ja) * | 1994-08-23 | 1996-03-05 | Nippon Steel Corp | 熱間加工性および耐硫化物応力割れ性に優れたマルテンサイト系ステンレス鋼の製造法 |
AT405193B (de) * | 1995-01-16 | 1999-06-25 | Boehler Edelstahl | Verwendung einer chromhältigen, martensitischen eisenbasislegierung für kunststofformen |
JPH08260037A (ja) * | 1995-03-23 | 1996-10-08 | Nippon Steel Corp | 耐硫化物応力割れ性、靭性および熱間加工性に優れたマルテンサイト系ステンレス鋼の製造法 |
JPH11106869A (ja) * | 1997-09-30 | 1999-04-20 | Sanyo Special Steel Co Ltd | 高強度かつ耐食性の優れたマルテンサイト系ステンレス鋼 |
JP2000109957A (ja) * | 1998-10-05 | 2000-04-18 | Sumitomo Metal Ind Ltd | ガスケット用ステンレス鋼およびその製造方法 |
-
1999
- 1999-05-10 AT AT0084399A patent/AT407647B/de not_active IP Right Cessation
-
2000
- 2000-05-09 EP EP00890145A patent/EP1052304B1/de not_active Expired - Lifetime
- 2000-05-09 DK DK00890145T patent/DK1052304T3/da active
- 2000-05-09 AT AT00890145T patent/ATE314501T1/de active
- 2000-05-09 SI SI200030787T patent/SI1052304T1/sl unknown
- 2000-05-09 DE DE50011941T patent/DE50011941D1/de not_active Expired - Lifetime
- 2000-05-09 PT PT00890145T patent/PT1052304E/pt unknown
- 2000-05-09 ES ES00890145T patent/ES2254128T3/es not_active Expired - Lifetime
-
2001
- 2001-05-15 HK HK01103380A patent/HK1034542A1/xx unknown
Also Published As
Publication number | Publication date |
---|---|
SI1052304T1 (sl) | 2006-04-30 |
AT407647B (de) | 2001-05-25 |
ATA84399A (de) | 2000-09-15 |
HK1034542A1 (en) | 2001-10-26 |
ATE314501T1 (de) | 2006-01-15 |
EP1052304A1 (de) | 2000-11-15 |
ES2254128T3 (es) | 2006-06-16 |
DK1052304T3 (da) | 2006-05-15 |
DE50011941D1 (de) | 2006-02-02 |
PT1052304E (pt) | 2006-05-31 |
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