Reading: Architecture of Arc Welding

LHH-314 H

LMA

High Recovery Low Hydrogen Electrode for Ship Quality

Elect

rode

Identification:

Imprint

Unitor LHH-314 H/ 7028 Classifications

SFA/AWS A 5.1

EN-ISO 2560-A

E 7028

E 42 4 B 73 H5

Approvals

Type of current

DNV

ABS

3YH5

AC DC+

Welding positions

Materials to be welded

3.01

General structural steel

DIN 17100 NF A35-501 BS 4360 Ship plates Cast steel DIN 1681 BS3100 Pipe material DIN 17172 API 5 LX DIN 1626-1630 Boiler & pressure DIN 17155 vessel steel NF A36-205 NF A36-207

BS 1501

Elevated temperature steel DIN 17175 Fine grained steel DIN 17102

NF A 36-203

All weld metal composition

Typical mech. properties of weld metal

PB

St33, St37-2 to St52-3 A33, A34-2, E24-2 (–4) to E36-2 (–4)

Grade 43D, 50D

Grade A, B, C, D, E, AH, DH, EH

GS38, GS45, GS52

A1, A2, A3, AM1, AM2, AW1 StE210.7, StE240.7, StE290.7, StE320.7, StE360.7

X42, X46, X52, X60

St37.0/4, St44.0/4, ST52.0/4 HI, HII, 17Mn4, 19Mn5 A37 (CP, AP), A42 (CP, AP), A48 (CP, AP), A52 (CP, AP) A510 AP, A530 AP, A550 AP 151/154/161-Gr. 360/400/430, 164-Gr. 360/400 St.35.8, St.45.8

St.E255 to St.E420

E275 D, E344D, E390D, E430D, E455D

0.07 - 0.10

0.85 - 1.25

0.25 - 0.65

Tensile strength MPa

Yield strength MPa

Elongation %

540 430 26

Welding data

Diameter mm.

Current range, A

4.0 5.0

170–240 225–355

Impact value ISO-V (J)

Recovery %

At -20°C = 110 At -40 °C = 65

165

Arc time **/ Deposition rate** Electrodes per electrode, sec.

Kg/h kg weld metal** 70 72

Fume class

3.7 5.7

14.4 9.6

4

* SDS available on request. ** 90% of max. amperage

Packaging data

Diameter mm.

Length mm.

Electrodes per box

Net weight, kg per box

Product No.

per box

Boxes per carton

4.0 5.0

450 450

54 36

5.5 5.5

095-699298 095-699306

3

Re-drying temperature: 350 °C (662 °F) for two hours.

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