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GRIBINOX 25.9.5L

A SUPER DUPLEX ELECTRODE FOR WELDING ALLOYS OF SIMILAR COMPOSITION

IDENTIFICATION
GRIBINOX 25.9.5L E 25.9.5-15

CLASSIFICATION
AWS/SFA 5.4:E25.9.5-15

DESCRIPTION
Basic coated electrode designed to match similar alloys The electrode gives matching strength and corrosion resistance in the solution treated condition but can also be used in the as-welded condition. Nitrogen and nickel contents are controlled to give a balanced duplex structure to minimize the risk of cracking, particularly in highly restrained welds.

WELD METAL ANALYSIS (RANGE) %

C Cr Ni Mn S P Mo Cu Si N W
0.04 24.0 - 27.0 8.0 - 10.5 2 0.025 0.03 2.5 - 4.5 0.40 - 1.50 0.7 0.20 - 0.30 0.4 - 1.0
max max max max max

MECHANICAL PROPERTIES (RANGE)

UTS (MPa) EL (%) (L=4D) CVN Impact Value
    Temp Joules
760 min 15 min -40°C 45 min
    -50°C 54 min

TYPICAL APPLICATIONS
Pumps and valves, corrosion/ wear resisting parts and process equipment for use in offshore oil and gas industries, pulp, paper and textile industries, and chemical and petrochemical plant.
 
MATERIALS TO BE WELDED
•    SAF 2507, ASTM S-32750, S-32760
•    ASTM A351, A744 (cast) - CD4MCu, UNSS32550, S3 2750, S32760 (wrought)
•    ASTM A240 (wrought) – UNS S32550 
•    UNS : 393770, J93380, J93404
•    DIN 1.4515, 1.4517 CD 4MCuN (cast) and similar composition.
•    Steel EN 1.4410, NF 23CND 2506AZ, SS2328.
•    Standard duplex : S 31803 and UNS 532205

MICROSTRUCTURE : In the solution treated condition the microstructure is duplex with about 30-60% ferrite dependent upon dilution.
INTERPASS TEMPERATURE : 100°C max
HEAT M-PUT : 1.0 - 1.5 kJ / mm
SCALING TEMPERATURE : Approx 850°C (air)
CORROSION TEMPERATURE : Very good resistance to pitting and stress corrosion cracking in Chloride containing environments. Pitting resistance in accordance with ASTM G-48A better than 40°C.

WELDING POSITION :

PACKING PARAMETERS

Size (mm) Length (mm) Amps DC (+) Packing / Box (kg) Packing / Box (Pcs)
2.5 350 60 - 90 2 x 5 = 10 94 x 5 = 470
3.15 / 3.20 350 70 - 120 2 x 5 = 10 60 x 5 = 300
4 350 100 - 155 2 x 5 = 10 38 x 5 = 190
5 350 130 - 180 2 x 5 = 10 24 x 5 = 120