ER90S-B9 (T91/P91) Wire
Modified 9Cr-1Mo-V wire for T91/P91 steel in advanced boilers.
Material overview
ER90S-B9 (T91/P91) Wire is recorded in the Heat-Resistant Steel Welding Consumables catalog. Modified 9Cr-1Mo-V wire for T91/P91 steel in advanced boilers. Its recorded characteristics include 9Cr with V, Nb, N for creep strength to ~650 C and strict preheat/PWHT control. Typical applications include Supercritical boiler headers and tubes and power plant high-temperature piping. The dataset currently includes 12 property records covering chemical composition and mechanical properties. Related standards include A5.28, A5.5, and GB/T 17854; product form data covers Solid Wire / GTAW-GMAW Wire and Covered Electrode. The final chemistry, condition, dimensions, test requirements, and documentation package must be confirmed before order acceptance.
Key characteristics
- 9Cr with V, Nb, N for creep strength to ~650 C
- strict preheat/PWHT control
Typical applications
- Supercritical boiler headers and tubes
- power plant high-temperature piping
Grade names and equivalents
Technical properties
Typical values are for reference only. Final chemistry, mechanical properties, heat treatment, dimensions, inspection, and documentation are confirmed against the applicable specification and MTC/COA before order acceptance.
Chemical composition
| Property | Value | Unit | Condition / standard |
|---|---|---|---|
| C | 0.07-0.13 | wt% | Typical value |
| Cr | 8.0-9.5 | wt% | Typical value |
| Mo | 0.85-1.15 | wt% | Typical value |
| V | 0.15-0.3 | wt% | Typical value |
| Nb | 0.02-0.1 | wt% | Typical value |
| N | 0.03-0.07 | wt% | Typical value |
| Mn | 0.4-1.5 | wt% | Typical value |
| Si | 0.15-0.5 | wt% | Typical value |
| Ni | 0.4 max | wt% | Typical value |
Mechanical properties
| Property | Value | Unit | Condition / standard |
|---|---|---|---|
| Tensile strength | min 620 | MPa | After PWHT |
| Yield strength 0.2% | min 410 | MPa | After PWHT |
| Elongation | min 16 | % | After PWHT |
Standards and specifications
Forms, applications, and capabilities
Product forms
- Product form
- Product form
Industries
- Industry
- Petrochemical & Chemical
Capabilities
- Capability
- Capability
- Heat Treatment
- Nondestructive & Laboratory Testing