What is claimed is:
1. A method of assigning an e-mail address comprising:
(A) a step of collecting a website which does not provide a web mail service for public by a website which provides a web mail service for public and equips with a web server and the first database stored already offered e-mail addresses of a website which provides a web mail service for public and storing already offered e-mail addresses of a website which does not provide a web mail service for public in the second database;
(B) a step of transmitting an input window for inputting a user chosen ID through the web server of the website providing a web mail service when a user connects to the website providing a web mail service for obtaining an e-mail address;
(C) a step of assigning and storing an e-mail address in the first database by combining the user chosen ID with the domain name of the website providing a web mail service if there is no duplicated ID after searching the first database by the web server which received the ID; and
(D) a step of assigning and storing an e-mail address in the second database by combining the user chosen ID with the domain name of the website in which the chosen ID is not occupied by another user after searching the second database by the web server if the chosen ID is already used by another user in the first database in the step (C).
2. A method of assigning an e-mail address according to claim 1, wherein the website which provides a web mail service and the website which does not provide a web mail service use the same mail server.
3. A method of assigning an e-mail address according to claim 1, wherein a user can assign the same file name for his or her homepage with the e-mail address assigned in the above step (C) or step (D) when a service to provide space for a homepage is carried out along with the assigning of an e-mail address in the website providing a web mail service.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A steel material superior in high temperature characteristics and toughness characterized by containing, by mass %,
C: 0.005% to 0.03%,
Si: 0.05% to 0.40%,
Mn: 0.40% to 1.70%,
Nb: 0.02% to 0.25%,
Ti: 0.005% to 0.025%,
N: 0.0008% to 0.0045%, and
B: 0.0003% to 0.0030%,
restricting
P: 0.030% or less,
S: 0.020% or less, and Al: 0.03% or less, and
having a balance of Fe and unavoidable impurities, where
the contents of C and Nb satisfy
C\u2212Nb7.74\u22660.002
and Ti-based oxides of a grain size of 0.05 to 10 \u03bcm are present in a density of 30 to 300mm2.
2. A steel material superior in high temperature characteristics and toughness as set forth in claim 1, characterized by containing, by mass %, one or both of
V: 0.10% or less and
Mo: 0.10% or less.
3. A steel material superior in high temperature characteristics and toughness as set forth in claim 1 characterized by containing, by mass %, one or more of
Zr: 0.03% or less and
Hf: 0.01% or less.
4. A steel material superior in high temperature characteristics and toughness as set forth in claim 1 characterized by containing, by mass %, one or more of
Cr: 1.5% or less,
Cu: 1.0% or less, and
Ni: 0.7% or less.
5. A steel material superior in high temperature characteristics and toughness as set forth in claim 1 characterized by containing, by mass %, one or more of
Mg: 0.005% or less,
REM: 0.01% or less, and
Ca: 0.005% or less.
6. A steel material superior in high temperature characteristics and toughness as set forth in claim 1 characterized in that a mass concentration product of Nb and C is 0.0015 or more.
7. A steel material superior in high temperature characteristics and toughness as set forth in claim 1 characterized in that the steel material is a fire resistant steel material.
8. A steel material superior in high temperature characteristics and toughness as set forth in claim 1 characterized in that the steel material is extremely thick H-section steel with a flange thickness of 40 mm or more.
9. A method of production of a steel material superior in high temperature characteristics and toughness characterized by adjusting steel comprised of ingredients as set forth in claim 1 to a solute oxygen of 0.003 to 0.015 mass %, then adding Ti, melting, and casting to obtain a steel slab, and heating this to 1100 to 1350\xb0 C. and hot rolling.
10. A method of production of a steel material superior in high temperature characteristics and toughness as set forth in claim 9, characterized by hot rolling by a cumulative reduction rate at 1000\xb0 C. and below of 30% or more.
11. A method of production of a steel material superior in high temperature characteristics and toughness as set forth in claim 9 characterized by hot rolling, then cooling from 800\xb0 C. to 500\xb0 C. temperature range by a 0.1 to 10\xb0 C.s average cooling speed.