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ATOM ARC 9018-B9
Atom Arc 9018-B9 is designed to weld the modified 9% Cr - 1% Mo steels known by the designations T91, P91 or Grade 91.
Features
Atom Arc 9018-B9 is designed to weld the modified 9% Cr - 1% Mo steels known by the designations T91, P91 or Grade 91. These steels are designed to provide improved creep strength, toughness, fatigue, and oxidation and corrosion resistance at elevated temperatures.
View large imageClassifications
Classifications/Approvals
- ASME SFA 5.5
- AWS A5.5; E9018-B9H4R
Properties
| Typical Mechanical Properties | |
|---|---|
| Stress Relieved 1 hrs @ 1375°F (746°C) | |
| Yield Strength | 103 ksi, 711 MPa |
| Tensile Strength | 119 ksi, 821 MPa |
| Elongation % in 2” | 19 % |
| Stress Relieved 2 hrs @ 1400°F (760°C) | |
| Yield Strength | 85 ksi, 587 MPa |
| Tensile Strength | 105 ksi, 724 MPa |
| Elongation % in 2” | 25 % |
| Typical Undiluted Weld Metal Analysis | |
| C | 0.1 % |
| Mn | 0.8 % |
| Si | 0.17 % |
| P | 0.008 % |
| S | 0.009 % |
| Cr | 8.5 % |
| Mo | 1.0 % |
| X-Factor | < 15 |
SAW
Accessories
Depositions
Extra Info
The recommended preheat temperature for 9CrMo steels is 450-550°F depending on thickness. Post weld heat treatment is generally required.