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RATNA 309Cb (AWS A5.4 E309Nb-16)

Product Specification

All position rutile type electrode giving 25 Cr-123 Ni-Cb stabilized deposit.

CLASSIFICATION  : AWS/SFA-5.4: E 309Nb-16,

                                     IS-5206: E 23.12 Nb R 26 

CHARACTERISTICS     : A rutile type, all position electrode giving 24Cr/12Ni-0.7Cb stabilized. The weld metal has high tensile strength and high creep resistance upto 1100°C. welding with  stable arc, low spatter, smooth weld profile, easily removable slag.

APPLICATION               :

Welding suitable for similar steels, straight, chrome steels, dissimilar metal joining,

Welding suitable for between MS and Low alloy to stainless steels, Overlay and buffer applications etc.

RE-DRY CONDITION      : Re-Dry the electrode at 250°C for 1 hrs before use.

 ALL WELD CHEMICAL COMPOSITION %

C

Mn

Si

S

P

Cr

Ni

Nb

0.12max.

0.50-2.50

1.00Max

0.030Max

0.040Max

22.00-25.00

12.00-14.00

0.70-1.00

 

 ALL WELD MECHANICAL PROPERTIES:

UTS

(N/mm2)

EL %

(l=4d)

CHARPY “V” NOTCH

IMPACT  AT

FERRITE

(FN)

550 Min.

30 Min.

 +200C : 60-100 J

8-14

 

 DIEMENSION, CURRENT CONDITION & PACKING DATA       

Size(mm)

(Dia)

Size(inch)

(Dia)

Current Condition

(DC+AC) Amps

kg./pkt.

kg./Case

2.50/ 2.40 X 350

3/ 32” X 14”

50-80

2

20

3.15/ 3.20 X 350

1/ 8” X 14”

75-100

2

20

4.00 X 350

5/ 32” X 14”

110-140

2

20

5.00 X 350

3/ 16” X 14”

150-180

2

20

Customer packing on request.

 

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