| (19) |
 |
|
(11) |
EP 1 203 831 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
17.03.2004 Bulletin 2004/12 |
| (43) |
Date of publication A2: |
|
08.05.2002 Bulletin 2002/19 |
| (22) |
Date of filing: 05.11.2001 |
|
|
| (84) |
Designated Contracting States: |
|
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR |
|
Designated Extension States: |
|
AL LT LV MK RO SI |
| (30) |
Priority: |
03.11.2000 US 705681
|
| (71) |
Applicant: ATI Properties, Inc. |
|
Albany, Oregon 97321-0580 (US) |
|
| (72) |
Inventors: |
|
- Antony, Michael M.,
Monroe, North Carolina (US)
- Smythe, John W,
Charlotte, North Carolina, (US)
|
| (74) |
Representative: Baker, Colin John |
|
Eric Potter Clarkson Park View House 58 The Ropewalk
Nottingham NG1 5DD
Nottingham NG1 5DD (GB) |
|
| |
|
| (54) |
Thermal fatigue resistant stainless steel articles |
(57) A die casting die including a stainless steel comprising, by weight, 13 to 16 percent
chromium, 0 to less than 0.1 percent carbon, 10 to 17 percent cobalt, 2 to 6 percent
molybdenum, 2 to 5 percent nickel, and 0 to 1.5 percent titanium. High strength, high
toughness stainless steels having the indicated composition may exhibit favorable
thermal fatigue resistance, Rockwell C hardness greater than 40, and Charpy impact
toughness greater than 25 ft-lbs.