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RATNA 7018W (AWS/SFA-5.5: E 7018-W1 H4)

Product Specification

Hydrogen controlled low alloy steel electrode designed for welding of weathering steels.

 CLASSIFICATION          : AWS A5.5 E7018-W1 H4 

                                              UNS No. W20018

APPROVAL         :

CHARACTERISTICS     : A Hydrogen controlled basic coated electrode for welding weathering steels. Weld metal relatively high resistance to atmospheric corrosion. Very low level of diffusible hydrogen in welds. Weld metal gives radiographic quality.

APPLICATION               :

1)      Suitable for welding of weathering steels like SAILCOR-A & CORTEN A & B steels & equivalent.

2)      Medium tensile corrosion resistant structure steels and welding of high tensile steels.

3)       Electrode suitable for typical weathering steels, such as ASTM A 242 and A 588

RE-DRY CONDITION      : Re-Dry the electrode at 350°C for 1 hrs before use.

HYDROGEN CONTENT: 4.00ml/100grams Weld metal

ALL WELD CHEMICAL COMPOSITION %

C

Mn

Si

Cr

Ni

        Cu

          V

0.12 max.

0.40-0.70

0.40-0.70

0.15-0.30

0.20-0.40

 0.30-0.60

0.08 Max.

 

ALL WELD MECHANICAL PROPERTIES:

YS

(N/mm2)

UTS

(N/mm2)

EL %

(l=4xd)

CHARPY “V” NOTCH

IMPACT  AT

415 min.

490 min.

22 min.

-200C : 50-80 J

 

DIEMENSION, 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

3/ 32”

70-100

170

640

3.15/ 3.20

1/ 8”

100-140

110

440

4.00

5/ 32”

150-190

72

288

5.00

3/ 16”

200-250

50

200

 

Customer packing on request.

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