RATNA CR 9 (AWS A5.5 E8018 B8)

Hydrogen Controlled Iron Powder Electrode for Welding Creep-Resistant 9Cr-1Mo Steels

Classification:

AWS/SFA-5.5: E 8018 B8
IS-1395: E41 BB 826Fe

Characteristics:

A basic coated, hydrogen controlled, iron powder type electrode producing 9% Cr / 1.0% Mo deposits. The weld metal is of radiographic quality, highly resistant to corrosion and oxidation, and exhibits excellent creep resistance at elevated temperatures up to 600°C. The weld finish is smooth and defect-free.

Applications:

Ideally suitable for oil refineries, petrochemical and chemical industries.
Powerhouse applications where steels of similar compositions are used.
Welding 7–10% Cr / 1% Mo steels and castings of similar compositions.

Re-Dry Condition:

Re-dry the electrode at 250°C for 1 hour before use.

ALL WELD CHEMICAL COMPOSITION %
C	Mn	Si	S	P	Cr	Mo
0.05-0.10	1.00 Max	0.60 Max	0.030 Max	0.030 Max	8.00-10.50	0.85-1.20

ALL WELD MECHANICAL PROPERTIES
YS (N/mm²)	UTS (N/mm²)	EL % (l=4d)
460-580	550-680	20-28

DIMENSION, CURRENT CONDITION & PACKING DATA
Size (mm) (Dia)	Size (inch) (Dia)	Current Condition (DC+) Amps	No. of Pcs./pkt.	No. of Pcs./Case
2.50/2.40 x 350	3/32” x 14”	60-80	170	640
3.15/3.20 x 450	1/8” x 14” / 18”	100-130	110	440
4.00 x 450	5/32” x 18”	140-180	72	288
5.00 x 450	3/16” x 18”	190-240	50	200