瑞典伊萨ESAB焊条OK68.81 /E312-17不锈钢电焊条
OK Autrod 13.91瑞典伊萨耐磨焊丝OK Autrodur 56 GM堆焊焊丝盾构机刀盘耐磨焊丝MSG-6-GZ-C-60G耐磨合金焊丝
陕西西安骏焊专业销售瑞典伊萨进口铝镁焊丝 气保耐磨实芯药芯焊丝 不锈钢气保焊丝 镍基焊条镍基焊丝 低合金焊条焊丝 高强钢焊条焊丝 铜焊条焊丝 铸铁焊条焊丝 耐磨焊条焊丝等进口焊条焊丝
OK 68.81
SMAW
Type Rutile-acid
OK 68.81 is a high-alloyed electrode which deposits a ferritic-austenitic duplex weld metal with approx. 40% ferrite. Resistant to stress corrosion and highly insensitive to dilution. Good scaling resistance up to 1150�C. OK 68.81 is used for joining dissimilar steels, steels with reduced weldability and buffer layers prior to hardfacing. Applications: rolls, forging dies, hot-work tools, dies for plastics and so on.
Welding current, A
DC+, AC OCV 60 V
Classifications
Approvals
Typical all weld metal composition
Typical properties all weld metal
SFA/AWS A5.4
E312-17
EN 1600
E 29 9 R 3 2
Werkstoff Nr.
1.4337
C
0,12
Si
0,7
Mn
0,8
Cr
29,0
Ni
9,8
Mo
<0,5
Cu
<0,3
Redrying temperature, �C
350
Redrying time, hours
2
Yield stress, MPa
610
Tensile strength, MPa
790
Elongation, %
22
Elongation, %
22
Ferrite content
FN 50-80
Weld metal hardness, a w
220-240 HV
Machinability
Fair
Charpy V
Test temps, �C
Impact values, J
+20
30
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
123,0
78,0
42,0
26,0
16,5
H. Kg weld metal/hour arc time
0,7
0,9
1,3
2,0
3,2
T. Burn-off time, secs/electrode
41
48
65
66
68
