OK 68.81是一款高合金化焊条，可熔敷含有约40%铁素体的铁素体-奥氏体双相焊缝金属。其具有抗应力腐蚀性能，且非常不易受到焊缝稀释影响。其抗结垢温度可达1150°C。OK 68.81可用于焊接异种钢、具有较低可焊性的钢种以及耐磨堆焊前的过渡层焊接。应用：轧辊、锻模、热作工具、塑料模具等等。
Typical Tensile Properties
| As welded |
| 保护气体 | Elongation | Tensile Strength | Yield Strength |
| ISO | - | - | - |
| AWS | 25 % | 790 MPa | 610 MPa |
夏比V型缺口冲击性能| As welded |
| Impact Value | Testing Temperature | 保护气体 |
| 30 J | 20 °C | AWS |
焊缝金属分析| Mn |
| Mn | Mo | C | Si | Ferrite FN | Ni | N | Cr |
| 0.9 % | - | - | - | - | - | - | - |
| Mo |
| Mn | Mo | C | Si | Ferrite FN | Ni | N | Cr |
| - | 0.04 % | - | - | - | - | - | - |
| C |
| Mn | Mo | C | Si | Ferrite FN | Ni | N | Cr |
| - | - | 0.13 % | - | - | - | - | - |
| Si |
| Mn | Mo | C | Si | Ferrite FN | Ni | N | Cr |
| - | - | - | 0.7 % | - | - | - | - |
| Ferrite FN |
| Mn | Mo | C | Si | Ferrite FN | Ni | N | Cr |
| - | - | - | - | 40 % | - | - | - |
| Ni |
| Mn | Mo | C | Si | Ferrite FN | Ni | N | Cr |
| - | - | - | - | - | 10.2 % | - | - |
| Cr |
| Mn | Mo | C | Si | Ferrite FN | Ni | N | Cr |
| - | - | - | - | - | - | - | 28.9 % |
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 |
| 41 sec | 0.64 kg | 123 | 40-60 A | 0.7 kg/h | 22 V | 2.0 x 300 mm |
| 48 sec | 0.64 kg | 78 | 50-85 A | 0.9 kg/h | 24 V | 2.5 x 300 mm |
| 65 sec | 0.62 kg | 42 | 60-125 A | 1.3 kg/h | 25 V | 3.2 x 350 mm |
| 66 sec | 0.62 kg | 26 | 80-175 A | 2.0 kg/h | 26 V | 4.0 x 350 mm |
| 68 sec | 0.65 kg | 17 | 150-240 A | 3.2 kg/h | 28 V | 5.0 x 350 mm |
