OK 74.46是一款含有0.5% Mo合金化成分的LMA焊条,可用于焊接压力容器钢种。使用特性非常适合倾斜位置的接头焊接。其药皮成分经过针对低电流焊接的优化,因而OK 74.46非常适合用于管道的焊接。
Typical Tensile Properties
PWHT 620°C 1h
|
Elongation
|
Tensile Strength
|
Yield Strength
|
保护气体
|
27 % |
560 MPa |
460 MPa |
ISO |
- |
- |
- |
AWS |
夏比V型缺口冲击性能
PWHT 620°C 1h
|
Impact Value
|
Testing Temperature
|
保护气体
|
175 J |
20 °C |
ISO |
焊缝金属分析
Mn
|
Mn
|
Mo
|
C
|
Si
|
Cr
|
0.77 % |
- |
- |
- |
- |
Mo
|
Mn
|
Mo
|
C
|
Si
|
Cr
|
- |
0.57 % |
- |
- |
- |
C
|
Mn
|
Mo
|
C
|
Si
|
Cr
|
- |
- |
0.05 % |
- |
- |
Si
|
Mn
|
Mo
|
C
|
Si
|
Cr
|
- |
- |
- |
0.38 % |
- |
Cr
|
Mn
|
Mo
|
C
|
Si
|
Cr
|
- |
- |
- |
- |
0.04 % |
熔敷数据
Fusion time per electrode at 90% I max
|
kg weld metal/kg electrodes
|
Number of electrodes/kg weld metal
|
安培
|
熔敷率
|
电压 V
|
直径
|
40 sec |
0.59 kg |
136.0 |
55-80 A |
0.7 kg/h |
22 V |
2.0 x 300 mm |
55 sec |
0.59 kg |
73.0 |
75-110 A |
0.9 kg/h |
23 V |
2.5 x 350 mm |
66 sec |
0.54 kg |
53 |
105-150 A |
1 kg/h |
23 V |
3.2 x 350 mm |
81 sec |
0.59 kg |
37.0 |
105-150 A |
1.2 kg/h |
25 V |
3.2 x 450 mm |
90 sec |
0.65 kg |
22.5 |
140-200 A |
1.8 kg/h |
26 V |
4.0 x 450 mm |
104 sec |
0.65 kg |
14.5 |
190-270 A |
2.4 kg/h |
27 V |
5.0 x 450 mm |