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瑞典伊薩ESAB焊條OK68.81 /E312-17不銹鋼電焊條
OK Autrod 13.91瑞典伊薩耐磨焊絲OK Autrodur 56 GM堆焊焊絲盾構機刀盤耐磨焊絲MSG-6-GZ-C-60G耐磨合金焊絲
陜西西安駿焊專業銷售瑞典伊薩進口鋁鎂焊絲 氣保耐磨實芯藥芯焊絲 不銹鋼氣保焊絲 鎳基焊條鎳基焊絲 低合金焊條焊絲 高強鋼焊條焊絲 銅焊條焊絲 鑄鐵焊條焊絲 耐磨焊條焊絲等進口焊條焊絲
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
