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   ‘“āŠO ‰Î—Í”­“dŠ‹y‚ŅAÄ‹pŨ”õ‚É“K—p‚ˇ‚é‚Ŋ‚ß‚É POSCO ‚ł͐V‹K|Ū‚Å‚ ‚é—°Ž_˜I“_‘Ī•…H| (ANCOR | ) ‚đŠJ”­‚ĩ‚Ü‚ĩ‚ŊB ANCOR |‚́A—°Ž_—n‰t‚Å‚Ė‘Ī•…HĢ‚ĒAŠų‘ļ‚Ė STS ‘fŪ‚É”ä‚ׁA ‚Æ‚Ä‚ā—DG‚Č“ÁĢ‚đŽĻ‚ĩA‰Î—Í ”­“dŠ‚Ė’E—°Ũ”õ•”•Ē‚Å–â‘č‚Æ‚Č‚é|Ū‚Ė•…H–â‘č‚đ‰đŒˆ‚ˇ‚é‚ą‚Æ‚Ē‰Â”\‚Å‚ˇB

   V‹K ANCOR |‚ĖŠJ”­‚É‚æ‚Á‚āA—nÚŪ—ŋ‚Ė‘ŽY‰ģ‚Ē—v‹‚ŗ‚ę‚鎖‚Æ‚Č‚č‚Ü‚ĩ‚ŊB


   V‹K ANCOR |‚ĖŠJ”­‚É‚æ‚Á‚āA—nÚŪ—ŋ‚Ė‘ŽY‰ģ‚Ē—v‹‚ŗ‚ę‚鎖‚Æ‚Č‚č‚Ü‚ĩ‚ŊB
  ‚”Z“x—°Ž_˜I“_•…HĢ‚Ē—DG‚ȁAƒ|ƒXƒR@@ŒÅ—L‹KŠi‚ĖV‹K ‘fŪ
  ‘Ī—°Ž_•…HĢ;: STS ‘Δä 10 ”{A‘Ī ? ŒķĢ|‘Δä 1.5 ”{
   ‘“ā‰Î—Í”­“dŠ —ė‹ģiƒˆƒ“ƒtƒ“j 3 A 4 †‹@@@“K—p’†
—°Ž_”Z“x & ‰ˇ“x‚É‚æ‚é•…H—Ę

   ‘Ī—°Ž_•…H“ÁĢ : ˆę”ʍ| ƒ STS ƒ ‘ĪŒķĢ| ƒ ‘Ī—°Ž_•…H|
   ‘Ī—°Ž_ •…H : ‘Ī—°Ž_•…H“ÁĢ‚đŒüã‚ŗ‚š‚éˆ×‚É Cu, Co •Ą‡“Y‰Á
   Cu : Cu “Y‰Á|‚Í Cu –ĸ“Y‰Á|‚É”ä‚ׁA–ņ 3 ”{‚Ė‘Ī—°Ž_•…H“ÁĢ‚đ•\‚ˇ
    Cu-Co : Co ‚Í Cu ‚Æ•Ą‡“Y‰Á‚ŗ‚ęA‘Ī—°Ž_•…H“ÁĢ‚đ’˜‚ĩ‚­Œüã‚ŗ‚š‚é
‰ˇ“x‹y‚Ņ—°Ž_”Z“x‚É‚æ‚é•…H‘Ŧ“x

   ASTM G31-72 : Standard Practice for Laboratory Immersion Corrosion
  Testing of Metals
   50% —°Ž_—n‰t 70 Ž 3-6 ŽžŠÔˆÛŽ
    ŽŽŒą•Đ‚đ’ž’…ŒãA•…HŒ¸—Ę‚đ‘Ē’č
•…HŽŽŒą‘•’u

•]‰ŋ€–Ú
Šî€ ( •K{•¨Ģ )
•]‰ŋđŒ
‚‰ˇ‹­“x•ÛØŒ^ (Type A)
‘Ī—°Ž_•…HĢ•ÛØŒ^ (Type B)
Ú‘ą•”
•¨Ģ
(butt)
‘Η°Ž_•…HĢ
•…HŒã , WM Œú‚ŗ •ęŪŒú‚ŗ
70Ž, 50%
—°Ž_—n‰t 6 ŽžŠÔ’ž’…
‚‰ˇˆø’Ŗ‹­“x (Mpa)
400( •ęŪ”j’f )
-
í‰ˇˆø’Ŗ‹­“x (Mpa)
550( •ęŪ”j’f )
 420( •ęŪ”j’f )
‰ˇ“x : 25Ž
ÕŒ‚‚ļ‚ņĢ (J,FCAW)
60
60
WM, FL, FL+1 (0Ž)


  ŽĀ—nÚ : 2 sets ( ‘—nÚü 600mm)




FCAW
SC-71ACR


WM
FL
FL+1
FL+3
??
SC-
71ACR


  ŽŽŒą‹KŠi : ASTM G31 (Laboratory Immersion Corrosion Testing of Metals)
   ŽŽŒąđŒ : 70 o C, 50% —°Ž_—n‰t 6 ŽžŠÔ’ž’…
   ŽŽŒą•Đ Œ`ķ

 
‘Η°Ž_•…H|—Ę
SC-71ACR
37
 
 
—nÚ•”•…HŽŽŒą•Đ@•\–Ę / ‘¤–Ę
SC-
71ACR




—nÚ•” ˆø’ŖŽŽŒą•Đ
”j’fˆĘ’u
SC-71ACR
•ęŪ


   ŽŽŒą‹KŠi : JIS Z3121 (Methods of tensile test for butt welded joints)
   ŽŽŒą•Đ (2ea •Ŋ‹Ī ) : ”ã 1A/1 †

ˆø’Ŗ‹­“x (Mpa) / El. %, ”j’fˆĘ’u
SC-71ACR
440 / 30.4%, ????

ˆø’Ŗ‹­“x (Mpa) / El. %, ”j’fˆĘ’u
FCAW
A
407.9 / 32.8%, •ęŪ”j’f
B
416.6 / 37.8%, •ęŪ”j’f
C
412.2 / 33.6%, •ęŪ”j’f
Solid
D
423.9 / 34.7%, •ęŪ”j’f


 


   ŽŽŒą‹KŠi : JIS Z3128 (Methods of impact test for welded joint)
   ŽŽŒą•Đ (3ea •Ŋ‹Ī ) / ŽŽŒą‰ˇ“x : sub-size Charpy ÕŒ‚ŽŽŒą•Đ (5mmt) / 0 o C

‹æ•Ē
“ú–{ŽY
SC-71ACR
A
B
WM
40.01
49.86
69.05
WM
27.36
50.69
60.4
WM
38.4
46.13
69.05
FL
81.9
60.4
90.95
FL
87.76
78.32
89.58
FL
56.15
71.68
89.12
FL+1
87.31
87.76
81.9
FL+1
91.41
87.76
83.69
FL+1
86.86
91.86
86.41