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 |


