Mã sản phẩm: E9018-G-2.5

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OK 78.16 is a CrMo-alloyed electrode for the welding of 0.25C-1Cr-0.3Mo-alloyed quenched and tempered steel grades. The heat treatment requirements for the weld metal are the same as those for the parent plate. The weld metal of OK 78.16 is also suitable for flame hardening. The welding of high tensile strength steel with OK 78.16 should be carried out at a preheating temperature of minimum 200°C.


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Typical Tensile Properties

ISO As welded
ElongationTensile StrengthYield Strength
17 %900 MPa800 MPa
AWS As welded
ElongationTensile StrengthYield Strength

Typical Charpy V-Notch Properties

ISO As welded
Impact ValueTesting Temperature
80 J20 °C

Typical Weld Metal Analysis %

0.76 %0.2 %0.17 %0.52 %1.15 %

Deposition Data

DiameterCurrentDeposition RateFusion time per electrode at 90% I maxkg weld metal/kg electrodesNumber of electrodes/kg weld metalVoltage
2.5 x 350 mm75-100 A0.90 kg/h58 sec0.64 kg70.020 V
3.2 x 450 mm105-140 A1.40 kg/h78 sec0.64 kg32.521 V
5.0 x 450 mm190-260 A2.80 kg/h86 sec0.68 kg15.023 V
4.0 x 450 mm145-195 A1.90 kg/h83 sec0.66 kg22.522 V

Approvals:CE, EN 13479, Seproz, UNA 272581
Classifications:SFA/AWS A5.5, E9018-G, EN ISO 18275-A, E 69 A Z B 42

Approvals are based on factory location. Please contact ESAB for more information.

Alloy Type:Low alloyed (1.15 % Cr ; 0.2 % Mo)
Coating Type:IMPERIAL_Basic covering
Welding Current:DC+