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Oerlikon Welding · Submerged arc flux

OP 121TTW

Oerlikon Welding
OP 121TTW Submerged arc flux

Classification: SA FB 1 55 AC H5 (Flux EN ISO 14174)

Submerged arc flux · Oerlikon Welding

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Key features

  • Highly basic flux for multiple passes applications
  • Very low impurity level in the weld deposit
  • Recommended with high strength wire grades and post weld heat treatment conditions
  • Very good CTOD properties of the weld metal

Standards and classifications

Flux EN ISO 14174SA FB 1 55 AC H5
Flux/wire AWS A5.17 AWS A5.23OE-S2 F7A6/F6P8-EM12K OE-SD3 F7A8/F7P8-EH12K OE-S2Mo F8A4/F8P4-EA2-A2 OE-S2 Ni2 F7A10/F7P10-ENi2-Ni2 OE-S2 Ni3 F8A15/F7P15-ENi3-Ni3 OE-SD3 1Ni 1/4Mo F8A10/F8P10-ENi5-Ni5 OE-SD3 1Ni 1/2Mo F9A8/F9P8-EF3-F3 OE-SD3 2NiCrMo F11A8/F11P5-EG-G OE-S2 CrMo1 F8P4-EB2R-B2 OE-S1 CrMo2 F8P2-EB3R-B3

Chemical composition

  1. (WEIGHT %), TYPICAL, ALL WELD METAL
  2. Wire grade C Mn Si Cr Ni Mo
  3. OE-S2 0.07 0.9 0.2
  4. OE-SD3 0.07 1.6 0.3
  5. OE-S2Mo 0.07 0.9 0.2 0.5
  6. OE-S2 Ni2 0.07 0.9 0.3 2.3
  7. OE-S2 Ni3 0.06 0.9 0.2 3.3 0.15
  8. OE-SD3 1Ni 1/4Mo 0.07 1.3 0.3 0.9 0.2
  9. OE-SD3 1Ni 1/2Mo 0.07 1.5 0.3 0.95 0.5
  10. OE-SD3 2NiCrMo 0.07 1.4 0.4 0.6 2.2 0.5
  11. OE-S2 CrMo1 0.07 0.9 0.3 1.1 0.5
  12. OE-S1 CrMo2 0.08 0.6 0.3 2.2 1
  13. 374 www.lincolnelectric.eu

Mechanical properties

  1. , TYPICAL, ALL WELD METAL
  2. Wire
  3. grade Condition* Yield strength
  4. (MPa)
  5. Tensile strength
  6. (MPa)
  7. Elongation
  8. (%)
  9. Impact ISO-V (J)
  10. -20°C -40°C -60°C -80°C -101°C
  11. OE-S2 AW ≥360 450-550 ≥25 ≥100 ≥50
  12. OE-SD3 AW ≥400 480-580 ≥25 ≥140 ≥100 ≥70
  13. OE-S2Mo AW ≥470 550-680 ≥24 ≥100 ≥50
  14. OE-S2
  15. Ni2 AW ≥450 550-600 ≥24 ≥120 ≥100 ≥70 ≥50
  16. OE-S2
  17. Ni2 PWHT 600°C/2h ≥430 500-600 ≥26 ≥140 ≥130 ≥100 ≥80
  18. OE-S2
  19. Ni3 AW ≥480 560-660 ≥25 ≥140 ≥130 ≥100 ≥80 ≥40
  20. OE-S2
  21. Ni3 PWHT 600°C/2h ≥430 500-610 ≥26 ≥140 ≥120 ≥90 ≥70 ≥30
  22. OE-SD3
  23. 1Ni
  24. 1/4Mo
  25. AW ≥500 560-680 ≥22 ≥145 ≥70
  26. OE-SD3
  27. 1Ni
  28. 1/4Mo
  29. PWHT 600°C/2h ≥470 550-660 ≥24 ≥160 ≥70
  30. OE-SD3
  31. 1Ni
  32. 1/2Mo
  33. AW ≥550 650-750 ≥20 ≥90 ≥70 ≥47
  34. OE-SD3
  35. 1Ni
  36. 1/2Mo
  37. PWHT 600°C/2h ≥540 630-730 ≥22 ≥120 ≥90 ≥70
  38. OE-SD3
  39. 2NiCrMo AW ≥720 760-900 ≥18 ≥69
  40. OE-SD3
  41. 2NiCrMo PWHT 580°C/2h ≥600 700-850 ≥19 ≥47
  42. OE-S2
  43. CrMo1 PWHT 680°C/2h ≥380 530-630 ≥24 ≥160
  44. OE-S2
  45. CrMo1
  46. PWHT
  47. 920°C/air+710°C ≥310 430-530 ≥30 ≥160
  48. OE-S1
  49. CrMo2 720°Cx8h ≥450 550-650 ≥22 ≥80
  50. OE-S1
  51. CrMo2
  52. PWHT
  53. 940°C/air+740°C ≥400 520-620 ≥22 ≥80
  54. *AW = As welded; PWHT = Post weld heat treatment

Flux characteristics

Current typeAC; DC+
Basicity (Boniszewski)3.1
Grain size (EN ISO 14174)2-20

Redrying 350°C x 2-4h

Versions and packaging

Item numberNet weight (kg)Packaging
W00028005125.0DRY BAG 25.0

Availability of individual item numbers is confirmed with the quotation.

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