IPC분류정보
| 국가/구분 |
United States(US) Patent
등록
|
| 국제특허분류(IPC7판) |
|
| 출원번호 |
US-0686598
(1976-05-14)
|
| 우선권정보 |
JA-0040607 (1973-04-10); JA-0012405 (1974-01-29) |
|
발명자
/ 주소 |
- Fujikura Masakuni (Nagoya JA) Abe Naohiro (Chita JA)
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| 출원인 / 주소 |
- Daido Seiko Kabushiki Kaisha (Nagoya JA 03)
|
| 인용정보 |
피인용 횟수 :
16 인용 특허 :
0 |
초록
▼
Disclosed is an improved stainless steel in ferrite-austenite condition caused by solution heat treatment at a temperature of 1000°-1150°C, composed of by weight percent, carbon up to 0.06%, silicon up to 1.0%, manganese up to 1.5%, nickel from 3.0% to 7.0%, chromium from 21.0% to 28.0%, copper up t
Disclosed is an improved stainless steel in ferrite-austenite condition caused by solution heat treatment at a temperature of 1000°-1150°C, composed of by weight percent, carbon up to 0.06%, silicon up to 1.0%, manganese up to 1.5%, nickel from 3.0% to 7.0%, chromium from 21.0% to 28.0%, copper up to 3.0%, molybdenum from 1.0% to 4.0%, boron from 0.0008% to 0.0080%, niobium from 0.08% to 0.7%, titanium from 0% to 0.5%, tantalum from 0% to 0.5%, zirconium from 0% to 0.5%, nitrogen up to 0.1%, and the remainder of iron and an inevitable amount of impurity, with the values of nickel equivalent and chromium equivalent calculated by the following equations: NICKEL EQUIVALENT =40(CARBON % +NITROGEN %) +3(NICKEL %) +(COPPER %) +2(MANGANESE %) CHROMIUM EQUIVALENT =(CHROMIUM %) +5.2(SILICON %) +4.2(MOLYBDENUM %) +4.5(NIOBIUM %) +7.0(TITANIUM %) +3.0(TANTALUM %) +13.0(ZIRCONIUM %) SATISFYING THE RELATIONSHIP BELOW: NICKEL EQUIVALENT =FROM 15 TO 30 CHROMIUM EQUIVALENT =FROM 28 TO 50 CHROMIUM EQUIVALENT －NICKEL EQUIVALENT =FROM 8 TO 27.
대표청구항
▼
An improved stainless steel in ferrite-austenite condition said ferrite-austenite condition being produced by solution heat treatment at a temperature of 1000 °-1150 °C, and composed of, by weight percent, carbon up to 0.06%, silicon up to 1.0%, manganese up to 1.5%, nickel from 3.0% to 7.0%, chromi
An improved stainless steel in ferrite-austenite condition said ferrite-austenite condition being produced by solution heat treatment at a temperature of 1000 °-1150 °C, and composed of, by weight percent, carbon up to 0.06%, silicon up to 1.0%, manganese up to 1.5%, nickel from 3.0% to 7.0%, chromium from 21.0% to 28.0%, copper up to 3.0%, molybdenum from 1.0% to 4.0%, boron from 0.0008% to 0.0080%, niobium from 0.08% to 0.7%, titanium from 0% to 0.5%, tantalum from 0% to 0.5%, zirconium from 0% to 0.5%, nitrogen up to 0.1%, and the remainder of iron and an inevitable amounts of impurity, with the values of nickel equivalent and chromium equivalent calculated by the following equations: nickel equivalent =40 (carbon % +nitrogen %) +3 (nickel %) +(copper %) +2 (manganese %) chromium equivalent =(chromium %) +5.2 (silicon %) +4.2 (molybdenum %) +4.5 (niobium %) +7.0 (titanium %) +3.0 (tantalum %) +13.0 (zirconium %) satisfying the relationship below: nickel equivalent =from 15 to 30 chromium equivalent =from 28 to 50 chromium equivalent －nickel equivalent =from 8 to 27.
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