gENERAL DESCRIPTION

Kobatek 326 has a very crack proof weld metal. It is suitable for the joining and welding of special steels used at both sub-zero and elevated temperatures, also recommended for 5-9 % nickel steels and nickel alloys such as Inconel 600, Incoloy 800, Nimonic 75, NiCr 80/20, NiCr 60/15, NiCr15Fe and dissimilar ferrous metal combinations, including stainless steel to steel

Kobatek 326 provides the ultimate fatigue resistance for highly stressed constuctions using thick sections. The weld metal has a good impact strength down to -196°C and a good tensile strength up to 1000°C. Also the corrosion and oxidation resistance are good.

Mechanical Properties, Typical, All Weld Metal

Tensile Strength : 66 – 71 (kg/mm²)
Elongation (L=5d) : 40 – 44 (%)
Hardness : 160 – 200 (HB)

Approvals and Certificates

Certificates
GOST TSEK

Application Areas

  • Joining or repairing of heavily constrained massive sections
  • Bearing rings of rotary kilns
  • Walls of ball mills
  • Ball mill driving gears, journals and collars
  • Blast furnaces
  • Flame hardening equipments
  • Heat treating trays
  • Pipe flanges
  • Machine parts subject to thermal cycling and sub-zero temperatures such as cryogenic equipments
  • Joining dissimilar combinations of steels

Welding Parameters / Packing and Diameter Informations

Current Type and Polarity : DC (+)

Diameter x Length
(mm)
Procedure – A
Current (Amper)
Procedure – B
Current (Amper)
Weight
(kg/box)
2.50 x 250
80 – 90 60 – 80 2,5
3.25 x 300
100 – 110   70 – 100 5
4.00 x 350
120 – 140 100 – 110 5

PROCEDURE – A 
High Amperage Welding
High amperage welding for heavy sections and large parts, maximum deposition rates.

PROCEDURE – B
Low Amperage Welding
Low amperage welding for small sections and parts which must not be overheated, minimum dilution and low heat input.