1225 – Cobalt Grade 25 Electrode

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INTERNATIONAL CLASSIFICATIONS

DIN 8555: E20-UM-250-CKTZ

EN 14700: E CO 1

FEATURES & APPLICATIONS

Excellent for repair of turbine blades, valves, forging dies and tools.

  • Very smooth arc characteristics.
  • Easily controlled molten weldmetal.
  • Works equally well on both AC and DC current.
  • Available bare as code 1295.
All Weld Metal Analysis (Typical Weight %)
CSiMnCrNiWFeCo
.1.91.12010.315.22.1Bal.

Flux Color: Grey

Typical Mechanical Properties

Undiluted Weld Metal Maximum Value Up to:

Hardness

Room Temperature 68°F (20°C) Rockwell C25

Elevated Temperature 1100°F (600°C) Rockwell C30

Welding Current & Instructions

Recommended Current: AC or DC Reverse (+)

Diameter (mm)3/32 (2.5)1/8 (3.25)5/32 (4.0)
Minimum Amperage6580100
Maximum Amperage85110130

Welding Techniques: Preheat massive parts to 570°F (300°C). Minimize amperage during welding.

Welding Positions: Flat, horizontal

Deposition Rates:

Diameter
(mm)
Length
(mm)
Weldmetal/
Electrode
Electrodes
per lb (kg) of
Weldmetal
Arc Time of
Deposition
min/lb (kg)
Amperage
Settings
Recovery
Rate
3/32 (2.5)14″ (350).80 oz. (22g)20 (44)19 (42)75130%
1/8 (3.25)14″(350)1.2 oz (33g)13 (29)14 (31)95130%
5/32 (4.0)14″ (350)1.56 oz (44g)10 (22)11 (24)115130%
APPROXIMATE ELECTRODE PACKAGING & DIMENSIONS
Diameter (mm)3/32 (2.5)1/8 (3.25)5/32 (4.0)
Length (mm)14″ (350)14″ (350)14″ (350)
Electrodes / lb18117
Electrodes / kg402516