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OK 76.98为一款适合焊接诸如T91/P91等改性9 Cr钢的低氢焊条。该焊条适用于管道和板材的全位置焊接。在此所列的机械性能参数为750°C热处理两小时之后测得。
Typical Tensile Properties
PWHT 755°C 2h |
Elongation |
Tensile Strength |
Yield Strength |
保护气体 |
Stress Relieved Temperature |
Stress Relieved Testing Time |
21 % |
820 MPa |
720 MPa |
ISO |
- |
- |
Stress relieved |
Elongation |
Tensile Strength |
Yield Strength |
保护气体 |
Stress Relieved Temperature |
Stress Relieved Testing Time |
- |
- |
- |
ISO |
760 °C |
3 hr |
PWHT 755°C 2h |
Elongation |
Tensile Strength |
Yield Strength |
保护气体 |
Stress Relieved Temperature |
Stress Relieved Testing Time |
- |
- |
- |
AWS |
- |
- |
夏比V型缺口冲击性能
PWHT 755°C 2h |
Impact Value |
Testing Temperature |
保护气体 |
Stress Relieved Testing Temp |
Stress Relieved Testing Time |
50 J |
20 °C |
ISO |
- |
- |
Stress relieved |
Impact Value |
Testing Temperature |
保护气体 |
Stress Relieved Testing Temp |
Stress Relieved Testing Time |
- |
20 °C |
ISO |
760 °C |
3 hr |
焊缝金属分析
Mn |
Mn |
Mo |
C |
Nb |
Si |
V |
Ni |
Cr |
0.8 % |
- |
- |
- |
- |
- |
- |
- |
Mo |
Mn |
Mo |
C |
Nb |
Si |
V |
Ni |
Cr |
- |
1 % |
- |
- |
- |
- |
- |
- |
C |
Mn |
Mo |
C |
Nb |
Si |
V |
Ni |
Cr |
- |
- |
0.1 % |
- |
- |
- |
- |
- |
Nb |
Mn |
Mo |
C |
Nb |
Si |
V |
Ni |
Cr |
- |
- |
- |
0.06 % |
- |
- |
- |
- |
Si |
Mn |
Mo |
C |
Nb |
Si |
V |
Ni |
Cr |
- |
- |
- |
- |
0.35 % |
- |
- |
- |
V |
Mn |
Mo |
C |
Nb |
Si |
V |
Ni |
Cr |
- |
- |
- |
- |
- |
0.24 % |
- |
- |
Ni |
Mn |
Mo |
C |
Nb |
Si |
V |
Ni |
Cr |
- |
- |
- |
- |
- |
- |
0.7 % |
- |
Cr |
Mn |
Mo |
C |
Nb |
Si |
V |
Ni |
Cr |
- |
- |
- |
- |
- |
- |
- |
9 % |
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 |
56 sec |
0.66 kg |
71.4 |
70-100 A |
0.90 kg/h |
21 V |
2.5 x 350 mm |
68 sec |
0.60 kg |
45.5 |
90-135 A |
1.20 kg/h |
22 V |
3.2 x 350 mm |
85 sec |
0.64 kg |
22.6 |
130-200 A |
1.90 kg/h |
23 V |
4.0 x 450 mm |
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