US4394168A
Expired / Lapsed
US
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Austenitic wear resistant steel
Assignee: NYE STAVANGER STAAL AS A NORWEGIAN Co
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Filing: 1981-02-02
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Granted: 1983-07-19
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Expires: 2001-02-02
Abstract
Abstract Austenitic steel having 16-25% Mn, 1,1-2,0% C, 0,2-2,0% Si, 0,5-5% Cr, 0,1-0,5% Ti, 0,3-4,0% Mo with or without addition of up to 0,5% of one or more of Ce, Sn and carbide forming elements like V, W, Nb (Cb), max. 5% Ni and max. 5% Cu, the remainder being Fe and impurities to max. 0,1% P and 0,1% S.
Inventors
- 👤 Tor Hartvig
- 👤 Petter Fjellheim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:21
CPC Classifications
C; C22; C22C; C22C38/00; C22C38/18; C22C38/38
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
69 words
An austenitic wear resistant steel having good wear resistance and serviceability when subjected to abrasive and combined abrasive stresses and impact stresses consisting essentially of, in percentage by weight: ______________________________________
16.-25. Mn
1.0-2.0 C
0.5-5.0 Cr
0.2-2.0 Si
0.1-0.5 Ti
0.3-4.0 Mo
0.0-0.5 one or more of Ce, Sn,
V, W or Nb (Cb)
0.0-5.0 Ni
0.0-5.0 Cu
0.0-0.1 P (impurity)
0.0-0.1 S (impurity)
remainder to 100% Fe.
______________________________________
Claim 2
Dependent Claim
69 words
An austenitic wear resistant steel having good wear resistance and serviceability when subjected to abrasive and combined abrasive stresses and impact stresses consisting essentially of, in percentage by weight: ______________________________________
16.-25. Mn
1.0-2.0 C
0.5-5.0 Cr
0.2-2.0 Si
0.1-0.5 Ti
0.3-4.0 Mo
0.0-0.5 one or more of Ce, Sn,
V, W or Nb (Cb)
0.0-5.0 Ni
0.0-5.0 Cu
0.0-0.1 P (impurity)
0.0-0.1 S (impurity)
remainder to 100% Fe.
______________________________________
Claim 3
Dependent Claim
39 words
The austenitic wear resistant steel of claim 1 consisting essentially of, in percentage by weight: ______________________________________
19.0-19.6 Mn
1.6-1.9 C
2.3-3.6 Cr
0.43-0.65 Si
0.1-0.3 Ti
1.1-2.7 Mo
0.0-0.1 P (impurity)
0.0-0.1 S (impurity)
remainder to 100% Fe.
______________________________________
Claim 4
Dependent Claim
33 words
The austenitic wear resistant steel of claim 2, consisting essentially of, by weight: ______________________________________
19.5% Mn
1.6% C
2.3% Cr
0.51% Si
0.3% Ti
2.0% Mo,
______________________________________ the remainder being Fe and impurities.
Claim 5
Dependent Claim
33 words
The austenitic wear resistant steel of claim 2, consisting essentially of, by weight: ______________________________________
19.2% Mn
1.8% C
2.3% Cr
0.51% Si
0.3% Ti
2.0% Mo,
______________________________________ the remainder being Fe and impurities.
Claim 6
Dependent Claim
33 words
The austenitic wear resistant steel of claim 2, consisting essentially of, by weight: ______________________________________
19.5% Mn
1.8% C
3.5% Cr
0.48% Si
0.1% Ti
2.7% Mo,
______________________________________ the remainder being Fe and impurities.
Claim 7
Dependent Claim
33 words
The austenitic wear resistant steel of claim 2, consisting essentially of, by weight: ______________________________________
19.4% Mn
1.6% C
1.3% Cr
0.65% Si
0.1% Ti
1.1% Mo,
______________________________________ the remainder being Fe and impurities.
Claim 8
Dependent Claim
33 words
The austenitic wear resistant steel of claim 2, consisting essentially of, by weight: ______________________________________
19.6% Mn
1.6% C
2.3% Cr
0.51% Si
0.3% Ti
1.7% Mo,
______________________________________ the remainder being Fe and impurities.
Claim 9
Dependent Claim
33 words
The austenitic wear resistant steel of claim 2, consisting essentially of, by weight: ______________________________________
19.2% Mn
1.8% C
2.3% Cr
0.51% Si
0.2% Ti
2.0% Mo,
______________________________________ the remainder being Fe and impurities.
Claim 10
Dependent Claim
33 words
The austenitic wear resistant steel of claim 2, consisting essentially of, by weight: ______________________________________
19.0% Mn
1.9% C
3.6% Cr
0.43% Si
0.1% Ti
2.7% Mo,
______________________________________ the remainder being Fe and impurities.
References Cited (Backward Citations)
US4130418A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-07-18 | 1987-01-17 | 1987-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-07-18 | 1991-01-17 | 1991-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-07-18 | 1995-01-17 | 1995-07-19 | $7700.00 | Window Closed / Lapsed |