Böhler Schweisstechnik Deutschland GmbH – 09_2005 339338 Böhler Schweisstechnik Deutschland GmbH – 09_2005

UV 420 TT / UV 420 TT-LHFluoride basic type

Classifications EN 760 SA FB 1 65 DC / SA FB 1 65 DC H5

Designation C Si Mn Cr Mo Ni V W Cu Weld metal classificationacc. to EN 756AWS A 5.17 - SFA-5.17AWS A 5.23 - SFA-5.23

Union S 2 0.10 0.10 1.00 S 35 4 FB S2Weld metal 0.07 0.25 1.05 F7A4-EM12

Union S 2 Mo 0.10 0.10 1.00 0.50 S 46 4 FB S2MoWeld metal 0.07 0.25 1.05 0.45 F8A4-EA2-A2

Union S 3 0.12 0.10 1.50 S 38 4 FB S3Weld metal 0.08 0.25 1.50 F7A4-EH10K

Union S 3 Mo 0.12 0.10 1.50 0.50 S 46 4 FB S3MoWeld metal 0.08 0.25 1.50 0.45 F8A4-EA4-A4

Union S 4 Mo 0.12 0.10 2.00 0.50 S 50 4 FB S4MoWeld metal 0.08 0.25 1.80 0.45 F8P4-EA3-A3

Typical analysis for wire and weld metal in wt. %:

Mechanical properties of the weld metal, as welded:

Wire 0.2%- Tensile Elon- Impact values*electrodes Yield strength gation ≥ J (CVN)

used strength l0=5d0≥ N/mm2 ≥ N/mm2 ≥ % +20 °C ±0 °C -20 °C -40 °C -60°C -80 °C

Union S 2 400 480 26 160 140 100 47

Union S 2 Mo 470 550 25 160 140 100 47

Union S 2 Ni 2,5 420 520 25 160 140 120 100 80 47

Union S 2 Ni 3,5 470 560 25 160 140 120 100 80 47

Union S 2 Ni 370 420 530 25 160 140 100 70 47

Union S 2 NiMo 1 500 560 25 180 160 120 100 80 27

Union S 2 Si 420 520 26 160 140 100 60 47

Union S 3 400 510 26 160 140 100 47 27

Union S 3 Mo 470 550 25 160 140 100 47

Union S 3 NiMo 550 620 22 160 140 120 80 47 27

Union S 3 NiMo 1 550 640 22 160 140 110 70 47

Union S 3 NiMoCr 690 760 17 120 100 80 47 27

Union S 3 Si 460 550 26 160 140 120 70 47

Union S 4 Mo 550 620 18 140 100 60 47

* Average values from 3 tests

UV 418 TTFluoride basic type

Approvals TÜV DB C DNV GL LR BV

Union S 3 Si 7276 51.132.05 1379 VY42 (H5) 6Y42M 5Y42H5 5Y465Y42SR

UV 420 TT/ UV 420 TT-LH is an agglomerated flux of fluoridebasic type for joining and surfacing applications with generalpurpose structural steels, fine grained structural steels andcreep resistant steels. It is characterized by its neutral metallur-gical behaviour. When used in combination with suitable wireelectrodes the weld metal has high toughness properties at subzero temperatures.It is suited for single wire and tandem welding.

Characteristicsand field of use

EN 760: 3 - 20 (0.3 - 2.0 mm); 3 - 25 (0.3 - 2.5 mm)Grain size

25 kg plastic bag (200 kg steel drum)Packaging

It is advisable to redry the welding flux for about 2 h at 300-350 °C (572-662 °F) prior to use.

Advice

SiO2+TiO2 CaO+MgO Al2O3+MnO CaF2

15 35 21 25Main constituentsin %

Mol.-% Weight %3.4 2.5

Basicity(Boniszewski)