Esab OK 68.81 312 Stainless Steel Welding Rod 2.5 x 300mm (0.7kg)

OK 68.81
SMAW
Type Acid Rutile

OK 68.81 is a high-alloyed electrode which deposits a ferritin-austenitic duplex weld metal with approx. 40% ferrite. It is resistant to stress corrosion and is highly insensitive to dilution. Good scaling resistance up to 1150°C. OK 68.81 is used for joining dissimilar steels, steels with reduced weld ability and buffer layers prior to hard facing. Applications: rolls, forging dies, hot-work tools, dies for plastics and so on.
Welding current
DC+, AC OCV 60 V

Classifications	Approvals	Typical all weld metal composition, %	Typical mech. properties all weld metal
EN 14700 E Fe11 EN ISO 3581-A E 29 9 R 3 2 SFA/AWS A5.4 E312-17 Werkstoff Nr. 1.4337	Seproz UNA 272580	C 0,115 Si 0,75 Mn 0,75 Cr 29 Ni 9,75 Mo 0,5 Cu 0,3 P 0,030 S 0,020	Yield stress, MPa 610 Tensile strength, MPa 790 Elongation, % 22 Elongation, % 22 Ferrite content FN 35 - 65 Weld metal hardness, a w 220-240 HV Machinability Fair Charpy V Test temps, °C Impact values, J +20 30

Redrying temperature, °C 350 Redrying time, hours 2

 

Diameter, mm	2,0	2,5	3,2	4,0	5,0
Length, mm	300	300	350	350	350
Arc voltage, V	22	24	25	26	28
Welding current, A	40-60	50-85	60-125	80-175	150-240
N. Kg weld metal/kg electrodes	0,64	0,64	0,62	0,62	0,65
B. No. of electrodes/kg weld metal	123	78	42	26	17
H. Kg weld metal/hour arc time	0,7	0,9	1,3	2,0	3,2
T. Burn-off time, s/electrode	41	48	65	66	68
Weight of rods/box, kg	1,3	2,0	3,9	5,9	9,4