Patent US3942954A successfully refreshed from Google Patents.
US3942954A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sintering steel-bonded carbide hard alloy
Assignee: Deutsche Edelstahlwerke AG
•
Filing: 1970-12-31
•
Granted: 1976-03-09
•
Expires: 1990-12-31
Abstract
Abstract A sintered alloy comprising a carbide of preferably titanium and a steel matrix of an alloy steel containing chromium, molybdenum, copper and vanadium as alloying elements provide high temperature hardness and wear resistance. Preferred alloys contain 0.8 to 1.9% by weight of manganese and up to 80% by weight of carbide.
Inventors
- 👤 Fritz Frehn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:38
CPC Classifications
C; C22; C22C; C22C33/00; C22C33/02; C22C33/0257; C22C33/0278; C22C33/0292; C22C29/00; C22C29/02; C22C29/06; C22C29/067; C22C38/00; C22C38/18; C22C38/22; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12028; Y10T428/12063; Y10T428/12139
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
106 words
A sintered steel-bonded carbide hard alloy, comprising from 15% to 80% by weight of a carbide of at least one metal selected from the class consisting of chromium, molybdenum, tungsten, tantalum, niobium, zirconium and titanium and from 20% to 85% by weight of a steel matrix consisting essentially of 0.25 to 0.9 % carbon, 5 to 18.0 % chromium, 2 to 5.0 % molybdenum, 0.3 to 3.0 % copper, 0.1 to 1.0 % vanadium, 0 to 3.0 % manganese, 0 to 1.0 % silicon, 0 to 6.0 % cobalt, 0 to 0.5 % niobium, 0 to 0.01 % boron, 0 to 1.8 % nickel, balance iron.
Claim 2
Dependent Claim
106 words
A sintered steel-bonded carbide hard alloy, comprising from 15% to 80% by weight of a carbide of at least one metal selected from the class consisting of chromium, molybdenum, tungsten, tantalum, niobium, zirconium and titanium and from 20% to 85% by weight of a steel matrix consisting essentially of 0.25 to 0.9 % carbon, 5 to 18.0 % chromium, 2 to 5.0 % molybdenum, 0.3 to 3.0 % copper, 0.1 to 1.0 % vanadium, 0 to 3.0 % manganese, 0 to 1.0 % silicon, 0 to 6.0 % cobalt, 0 to 0.5 % niobium, 0 to 0.01 % boron, 0 to 1.8 % nickel, balance iron.
Claim 3
Dependent Claim
21 words
A sintered alloy according to claim 1, wherein the manganese content of the steel matrix is from 0.8 % to 1.9%.
Claim 4
Dependent Claim
50 words
A sintered steel-bonded carbide hard alloy, comprising from 32% to 35% by weight of titanium carbide and from 65% to 68% by weight of a steel matrix consisting essentially of 0.4 to 0.6 % carbon, 8.0 to 12.0 % chromium, 2.5 to 4.0 % molybdenum, 0.3 to 0.8 % copper,
Claim 5
Dependent Claim
50 words
A sintered steel-bonded carbide hard alloy, comprising from 32% to 35% by weight of titanium carbide and from 65% to 68% by weight of a steel matrix consisting essentially of 0.4 to 0.6 % carbon, 8.0 to 12.0 % chromium, 2.5 to 4.0 % molybdenum, 0.3 to 0.8 % copper,
Claim 6
Dependent Claim
17 words
001 to 0.01 % boron, 0.1 to 0.3 % vanadium, 0.1 to 0.3 % niobium, balance iron.
Claim 7
Dependent Claim
17 words
001 to 0.01 % boron, 0.1 to 0.3 % vanadium, 0.1 to 0.3 % niobium, balance iron.
Claim 8
Dependent Claim
46 words
A sintered steel-bonded carbide hard alloy comprising about 33% by weight of titanium carbide and about 67% by weight of a steel matrix consisting essentially of 0.6 % carbon, 0.5 % copper, 16.5 % chromium, 1.2 % molybdenum, 0.5 % nickel, 0.01 % boron, balance iron.
Claim 9
Dependent Claim
46 words
A sintered steel-bonded carbide hard alloy comprising about 33% by weight of titanium carbide and about 67% by weight of a steel matrix consisting essentially of 0.6 % carbon, 0.5 % copper, 16.5 % chromium, 1.2 % molybdenum, 0.5 % nickel, 0.01 % boron, balance iron.
Claim 10
Dependent Claim
67 words
A sintered steel-bonded carbide hard alloy comprising 32% to 35% by weight of titanium carbide and 65% to 68% of a steel matrix consisting essentially of 0.4 to 0.6 % carbon, 0.9 to 1.2 % manganese, 0.9 to 1.2 % copper, 0.1 to 0.5 vanadium, 8.0 to 12.0 % chromium, 2.5 to 4.0 % molybdenum, 0.1 to 0.25 % niobium, 0.008 to 0.01 % boron, balance iron.
Claim 11
Dependent Claim
67 words
A sintered steel-bonded carbide hard alloy comprising 32% to 35% by weight of titanium carbide and 65% to 68% of a steel matrix consisting essentially of 0.4 to 0.6 % carbon, 0.9 to 1.2 % manganese, 0.9 to 1.2 % copper, 0.1 to 0.5 vanadium, 8.0 to 12.0 % chromium, 2.5 to 4.0 % molybdenum, 0.1 to 0.25 % niobium, 0.008 to 0.01 % boron, balance iron.
Claim 12
Dependent Claim
66 words
A sintered steel-bonded carbide hard alloy comprising 50% to 80% by weight of titanium carbide and 20% to 50% by weight of a steel matrix consisting essentially of 0.4 to 0.8 % carbon, 8.0 to 15.0 % chromium, 2.0 to 3.5 % molybdenum, 0.6 to 1.6 % copper, 0.3 to 1.0 % vanadium and/or 0.05 to 0.2 % niobium, 0.001 to 0.01 % boron, balance iron.
Claim 13
Dependent Claim
66 words
A sintered steel-bonded carbide hard alloy comprising 50% to 80% by weight of titanium carbide and 20% to 50% by weight of a steel matrix consisting essentially of 0.4 to 0.8 % carbon, 8.0 to 15.0 % chromium, 2.0 to 3.5 % molybdenum, 0.6 to 1.6 % copper, 0.3 to 1.0 % vanadium and/or 0.05 to 0.2 % niobium, 0.001 to 0.01 % boron, balance iron.
Claim 14
Dependent Claim
49 words
a sintered steel-bonded carbide hard alloy comprising about 70% by weight of titanium carbide and about 30% by weight of a steel alloy consisting essentially of 0.55 % carbon, 0.80 % copper, 10.0 % chromium, 3.0 % molybdenum, 1.0 % manganese, 0.5 % vanadium, 0.01 % boron, balance iron.
Claim 15
Dependent Claim
49 words
a sintered steel-bonded carbide hard alloy comprising about 70% by weight of titanium carbide and about 30% by weight of a steel alloy consisting essentially of 0.55 % carbon, 0.80 % copper, 10.0 % chromium, 3.0 % molybdenum, 1.0 % manganese, 0.5 % vanadium, 0.01 % boron, balance iron.
References Cited (Backward Citations)
US2507195A
Cited
US2793113A
Cited
US2848323A
Cited
US3053706A
Cited
US3152934A
Cited
US3380861A
Cited
US3390967A
Cited
US3492101A
Cited
US3450511A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-03-09 | 1979-09-08 | 1980-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-09 | 1983-09-08 | 1984-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-09 | 1987-09-08 | 1988-03-09 | $7700.00 | Window Closed / Lapsed |