Nickel Manganese 
Isoarc 455 Fe-Mn-A

Characteristics
The specially formulated coating permits welding at low amperage with minimal spatter. The deposit is Austenitic, fully machinable and work hardening. Standard low hydrogen procedures should be applied.

Applications
ISOARC 455 is widely used for reclaiming worn components - crusher rolls, railway crossings, rolling mill spindles and couplers, bucket lips and teeth, rock crushing jaws, earthmoving and mining components.

Procedures
Maximum machinability and bonding on heavy sections is obtained by pre-heating to 150 degrees. Medium short arc should be maintained. Back-step technique and light peening of the welds is recommended. Before welding the repair area must be machines or ground clean. If ground, remove carborundum particles with an oxidizing flame, searing the area to be welded. Depending on wall thickness, a U or a double U welding preparation must be made. Use a short arc and keep the electrode at a steep angle. Remove slag and peen lightly. Always restrike on the weld deposit and never on the parent metal s this induces thermal shock.

Classifications
AWS E Fe Mn-A
PRODUCT ISOARC 455 Ni-Mn
DIN 8555 E6-UM-55-GS
 
Mechanical Properties
COMPOSITION Manganese + Nickel
IMPACTVALUE 45 Hrc
HARDNESS >250 - 500 HB
Chemical Analysis
Carbon 0.5 - 0.9
Manganese 11 - 16 (15 typ)
Silicone 1.2 max
Chromium 0.5 maximum
Molybdenum < 0.7
Nickel 2.5 - 5.0(4 typ)

Welding Position

Diameter Length Current Pack Mass Item No
3.2 350mm 80 - 125A 5kg EL45532
4.0 350mm 120 - 160A 5kg EL45540
5.0 450mm 180 - 220A 5kg EL45550
6.3 450mm 250 - 300A 5kg EL45563