US4436554A
Expired / Lapsed
US
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High strength and high toughness welding material
Assignee: Mitsubishi Heavy Industries Ltd
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Filing: 1982-10-29
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Granted: 1984-03-13
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Expires: 2002-10-29
Abstract
Abstract A high strength and high toughness welding material containing: C: 0.05-0.15%, Si: 0.25-0.70%, Mn: 0.60-1.80%, Ni: 4.5-11.0%, Cr: 0.20-1.20%, Mo: 0.20-0.60%, Ti: 0.03-0.12%, Cr+Mo: from 0.40% to 0.030×(Ni%) 2 by weight and the balance essentially iron.
Inventors
- 👤 Takashi Omae
- 👤 Kisaburoo Tanaka
- 👤 Masahiro Aoki
- 👤 Fumitoshi Hirayama
- 👤 Susumu Izaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 19:13
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/24; B23K35/30; B23K35/3053; B23K35/3066; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12771; Y10T428/12861; Y10T428/12951; Y10T428/12958
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
A high strength and high toughness steel welding material which has been modified by subjecting a welding portion welded with said welding material to quenching and annealing said welding material consisting essentially of: C: 0.05-0.15%, Si: 0.25-0.70%, Mn: 0.60-1.80%, Cu: an effective amount up to 0.20%, Ni: 4.5-11.0%, Cr: 0.20-1.20%, Mo: 0.20-0.60%, Ti: 0.03-0.12%, and the balance being substantially iron and wherein the Cr+Mo is from 0.40% to 0.030×(Ni%) 2 by weight, said welding material having a yield strength ranging from 75-100 Kgf/mm 2 and having a low temperature durability of over 28 kg/mm 2 at -90° C.
Claim 2
Dependent Claim
98 words
A high strength and high toughness steel welding material which has been modified by subjecting a welding portion welded with said welding material to quenching and annealing said welding material consisting essentially of: C: 0.05-0.15%, Si: 0.25-0.70%, Mn: 0.60-1.80%, Cu: an effective amount up to 0.20%, Ni: 4.5-11.0%, Cr: 0.20-1.20%, Mo: 0.20-0.60%, Ti: 0.03-0.12%, and the balance being substantially iron and wherein the Cr+Mo is from 0.40% to 0.030×(Ni%) 2 by weight, said welding material having a yield strength ranging from 75-100 Kgf/mm 2 and having a low temperature durability of over 28 kg/mm 2 at -90° C.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-03-13 | 1987-09-12 | 1988-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-03-13 | 1991-09-12 | 1992-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-03-13 | 1995-09-12 | 1996-03-13 | $7700.00 | Window Closed / Lapsed |