HORDA Hoba-55

AWS A5.15: ERNiFe-CI
EN ISO 1071: S C NiFe-1

Applications for welding and surfacing cast iron and joining cast iron to steel

Used in mechanical engineering, shipbuilding and repair work for welding gray and malleable cast iron, as well as for joining cast iron to low carbon steels. Provides high weld strength, crack resistance and good machinability of the deposited metal.

Processes: GTAW, GMAW.

Recommended for restoration of cast iron castings, repair of engine parts, housings and industrial equipment.

Typical chemical composition

C	Si	Mn	Ni	Fe	Others
0,9	0,5	2,5	55	41	≤ 1

Typical mechanical properties all weld metal

Tensile strength: 400–450 MPa.
Hardness: 150–180 HB.
Elongation: 10–15%.
Provides good ductility and crack resistance in the weld zone.

Available diameters and packaging

	0,8	1,0	1,2	1,6	2,0(2,4)	3,0(3,2)	4,0
Spool BS200 2(5)kg	х	х	х	-	-	-	-
Spool BS300 15-18kg	х	х	х	-	-	-	-
Case 5kg	х	х	х	х	-	-	-

Welded steel

Gray cast iron:
- Ukraine: СЧ15, СЧ20, СЧ25 (DSTU 3925-99).
- EU: EN-GJL-200, EN-GJL-250, EN-GJL-300.
- USA: ASTM A48 Class 20, Class 25, Class 30.
Malleable cast iron:
- Ukraine: КЧ30-6, КЧ35-10 (DSTU 3925-99).
- EU: EN-GJS-400-18, EN-GJS-500-7.
- USA: ASTM A536 60-40-18, 65-45-12.
Low carbon steels for joining with cast iron: Ст3, 20 (DSTU 2651:2005)
Other cast iron alloys with similar characteristics.

Note: To reduce stresses in the weld, it is recommended to preheat the parts to 150–300 °C depending on the material thickness.