Metrode Consumables Catalog

METRODE PRODUCTS LTD
HANWORTH LANE, CHERTSEY
SURREY, KT16 9LL
Tel: +44(0)1932 566721
Fax: +44(0)1932 565168 Sales
+44(0)1932 569449 Technical DATA SHEET F-10
+44(0)1932 566199 Export
Email: info@metrode.com
Internet: http//www.metrode.com LA121 FLUX
Product description
Agglomerated fluoride-basic flux for submerged arc
welding low alloy steels.
Basicity Index (according to Boniszewski) is ~3.1.
Particle size is 0.2 – 2.0mm. Nominal composition of the
flux is:
40%(CaO+MgO) + 25%(CaF2) + 20%(Al2O3+MnO) +
15%(SiO2+TiO2)
Specifications
BS EN 760 S A FB 1 55 AC H5
DIN 32522 B FB 1 55 AC 10 MHP7
AWS A5.23 With SA1CrMo: F9 P0-EB2 B2
With SA2CrMo: F9 P0-EB3 B3
ASME IX Qualification
QW432 F-No -, QW442 A-No -.
Materials to be welded
Suitable for use with a wide range of materials including
CrMo creep resisting steels and 1-2%Ni steels for low
temperature toughness.
Applications
The LA121 flux is metallurgically neutral with respect to
Mn and Si. It is a hydrogen controlled flux depositing
low diffusible hydrogen content weld metal and hence is
suitable for thick section joints. Also suitable for use with
tandem and multi-wire welding systems.
Welding guidelines
Guidelines will depend on the material being welded. For
CrMo materials appropriate preheat and PWHT will be
required; for further details see the appropriate alloy data
sheet, A-12 for 1CrMo and A-13 for 2CrMo.
Typical parameters
Current: DC+ or AC, 1000A maximum. Typical
parameters are:
2.4mm 350A, 28V, 500mm/min travel speed
3.2mm 450A, 28V, 500mm/min travel speed
4.0mm 600A, 30V, 600mm/min travel speed.
Packaging data
Metrode LA121 flux is supplied in sealed moisture
resistant 20kg metal drums.
Storage
Preferred storage conditions for open drums: 18°C.
If flux has become damp or has been stored for a long
period, it should be redried at 300-350°C for 1-2 hours,
this restores to as-packed condition which typically gives