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RATNA 7018 M (AWS A5.5 E7018-A1)

Product Specification

Low Alloy Electrodes for Low Temperature services

CLASSIFICATION         :  AWS/SFA-5.5: E 7018-A1
                                            IS-1395: E 49BA 126Fe

CHARACTERISTICS     : An iron powder, hydrogen controlled medium heavy coated electrode producing 0.50% Mo weld deposit. Electrode has high welding efficiency coupled with creep resistance properties at 525°C temperature and has excellent mechanical properties.

APPLICATION               :
1) Suitable for high pressure boiler tubes and plates.
2) Fabrication for welding 0.50% Mo and 1% Cr-0.5% Mo steels used for elevated temperature services up to 525°C.
3) suitable for fine grained and creep resistant steel welding.

RE-DRY CONDITION      : Re-Dry the electrode at 250°C-300°C for one hour, for best results.


ALL WELD CHEMICAL COMPOSITION %
       

C

Mn

Si

S

P

Mo

0.12 max.

0.90 Max

0.60 Max

0.030 Max

0.030 Max

0.40-0.65


ALL WELD MECHANICAL PROPERTIES :
       
YS (N/mm²) UTS (N/mm²) EL % (l=4d) CHARPY “V” NOTCH IMPACT AT
390 Min 490 Min 22 Min +27°C : 140 J (Min.)
 

DIMENSION, CURRENT CONDITION & PACKING DATA
       
Size(mm) (DXL) Size(inch) (DXL) Current Condition (DC+/AC 70V) No. of Pcs./pkt. No. of Pcs./Case
2.50/ 2.40 X 350 3/ 32” X 14” 70-100 170 640
3.15/ 3.20 X 450 1/ 8” X 18” 100-130 110 440
4.00 X 450 5/ 32” X 18” 140-180 72 288
5.00X450 3/ 16” X 18” 190-230 50 200
Customer packing on request.
 

 

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