AWS: SFA SFA 5.5 E9018-G; TENSAL-Cr; Medium and High Tensile Steel


Description

AWS: SFA SFA 5.5 E9018-G

EN ISO CODE:

Tensal-Cr is a basic coated electrode alloyed with CrMo used for the welding of 0.25C-1Cr-0.3Mo-alloyed quenched and tempered steel grades. The electrode possess excellent operating characteristics & suitable for welding in all position. Weld metal possess tensile strength up to 700Mpa. High Tensile base metal is required to preheat at minimum 200ºC. The weld metal is also suitable for flame hardening.

Approvals

TYPICAL CHEMICAL COMPOSITION OF ALL WELD METAL:
Element C Mn Si S P Cr Mo
Percent 0.12 - 0.24 0.5-1.1 0.2-0.6 0.020 Max. 0.020 Max. 0.8-1.2 0.15-0.25
TYPICAL MECHANICAL PROPERTIES OF ALL WELD METAL IN AS-WELDED CONDITION:

UTS

(Mpa)

YS

(MPa)

EL

(L= 4d) %

CVN Impact (J)

at 20°C

700

550 17 75
CURRENT & PACKING DATA: AC/DC (+)

Size (mm)

Dia x Length

5x450 4x350 3.15x350 2.5x350

Current Range

(Amps)

200-250 140-180 100-130 70-100

Quantity (Kg/Carton)

2.5 2.5 2.5 2.5
PRECAUTIONS:

1. Use short arc, low current and stringer beads, Interpass 200-300ºC.
2. Re-dry the electrodes at 250-300ºC for one hour, as per our standard recommended practice.

OTHER DATA:

Welds in 1Cr, 0.2Mo QT-steel

1. Normalizing 15Hr at 860º C, cooling in air, tempering at 550ºC, cooling in oil (50-60ºC).
UTS: 850Mpa
2. Hardening in oil (50-60ºC) from 860ºC/30Hr, tempering 20Hr at 550ºC, air-cooled:
UTS: 1100Mpa.
3. Soft annealing at 720-730ºC.

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