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

All position rutile type electrode giving 25Cr-12Ni-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 deposit. The weld metal has high tensile strength and high creep resistance up to 1100°C. Provides a stable arc, low spatter, smooth weld profile, and easily removable slag.

Application:

Welding of similar steels and straight/chrome steels.
Suitable for dissimilar metal joining.
Welding between MS and low alloy to stainless steels.
Overlay and buffer layer applications.

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
0.12 max.	0.50-2.50	1.00 Max	0.030 Max	0.040 Max	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.	+20°C : 60-100 J	Aug-14

DIMENSION, CURRENT CONDITION & PACKING DATA
Size (mm) (Dia)	Size (inch) (Dia)	Current Condition (DC+/AC) Amps	kg./pkt.	kg./Case
2.50 / 2.40 × 350	3/32” × 14”	50-80	2	20
3.15 / 3.20 × 350	1/8” × 14”	75-100	2	20
4.00 × 350	5/32” × 14”	110-140	2	20
5.00 × 350	3/16” × 14”	150-180	2	20