Sep 16, 2026
Welding Consumables for P22 Steel: ER90S-B3 Wire and Electrode Selection Guide
Learn how to select welding consumables for P22 steel, including ER90S-B3 wire and B3 electrodes. Compare welding processes, classifications and key purchasing requirements.
When purchasing welding consumables for P22 steel, one question comes up frequently:
Should the project use ER90S-B3 welding wire or a B3 covered electrode?
The answer depends on the welding process, base material and qualified welding procedure.
For P22 / 2.25Cr-1Mo applications, ER90S-B3 is commonly used for applicable gas-shielded welding processes, while B3 covered electrodes are used for SMAW applications. The two belong to the same general Cr-Mo alloy family but are different consumable forms.
For buyers, the goal is not simply to find a product labeled “P22 welding consumable.” The important task is to select a consumable that matches the WPS/PQR, welding process and project specification.
P22 Steel: What Should You Use?
A practical starting point is:
Welding Process | Typical Consumable |
GTAW / TIG | ER90S-B3 |
GMAW / MIG | ER90S-B3 |
SMAW / Stick | B3 covered electrode, such as E9018-B3 |
The final classification must be confirmed against the qualified welding procedure.
AWS A5.28/A5.28M:2026 covers low-alloy steel electrodes and rods for gas-shielded processes including GMAW and GTAW, with classification requirements based on factors including chemical composition and weld-metal mechanical properties.
ER90S-B3 Wire vs B3 Electrode: What Is the Difference?
The biggest difference is not simply the alloy grade—it is the welding process and consumable form.
ER90S-B3
ER90S-B3 is a solid low-alloy welding wire/rod associated with the 2.25Cr-1Mo system.
Do you know,
What Is ER90S-B3 Welding Wire? AWS A5.28 Applications and Properties
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It can be used for applicable:
- GTAW
- GMAW
- Other qualified gas-shielded applications
Technical data for ER90S-B3 commonly identifies it for 2¼Cr-1Mo steels used in high-temperature applications.
B3 Covered Electrode
For SMAW, a B3 covered electrode such as E9018-B3 may be specified.
This is a different product form and should not be treated as interchangeable with ER90S-B3 simply because both are B3-type Cr-Mo consumables.
The welding process determines the appropriate consumable form.
Which P22 Materials Are Relevant?
Before ordering, confirm the exact base-material specification.
P22-related materials may include:
- ASTM A335 P22
- ASTM A213 T22
- ASTM A387 Grade 22
These materials belong to the 2.25Cr-1Mo family, but the final filler-metal selection should still follow the project specification and qualified procedure.
This is important because simply telling a supplier:
“I need welding wire for P22.”
may not provide enough information for a correct quotation.
What Should Buyers Check Before Ordering?
This is where many procurement problems occur.
1. Base Material
Provide the exact grade:
P22 / T22 / Grade 22
rather than only saying “Cr-Mo steel.”
2. Welding Process
Specify:
GTAW / GMAW / SMAW
The process determines whether you need a solid wire/rod or covered electrode.
3. Required Classification
If the WPS specifies ER90S-B3, do not allow a supplier to substitute another Cr-Mo classification simply because the mechanical strength appears similar.
4. Diameter
State the required size, such as:
- 1.0 mm
- 1.2 mm
- 1.6 mm
- 2.4 mm
or the electrode diameter required for SMAW.
5. PWHT and Welding Procedure
Confirm:
- Preheat
- Interpass temperature
- Heat input
- PWHT
- Welding position
- Applicable code
For Cr-Mo applications, these requirements should come from the qualified WPS/PQR rather than a generic recommendation.
Why Can the Wrong Consumable Cause Problems?
A common purchasing mistake is selecting a consumable based only on tensile strength or price.
For example, ER80S-B2 and ER90S-B3 are both Cr-Mo welding consumables, but they belong to different alloy systems.
Do you know
What Is ER80S-B2 Welding Wire? AWS Classification, Applications and Selection
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For a P22 project, the relevant question is not:
“Which wire has enough strength?”
It is:
“Which filler-metal classification is qualified for this material and welding procedure?”
This distinction is especially important for refinery, boiler, pressure-vessel and high-temperature piping projects.
What Documents Should You Request?
For industrial P22 projects, buyers should consider requesting:
- Technical Data Sheet (TDS)
- Mill Test Certificate (MTC)
- Certificate of Analysis (CoA), where applicable
- Chemical composition
- Mechanical properties
- Batch / heat traceability
- Packaging information
A technically suitable consumable can still create project delays if the required documentation is unavailable.
P22 Welding Consumables from GD WELD
GD WELD supplies specialty welding consumables for demanding industrial applications.
Our Cr-Mo range includes:
ER80S-B2 · ER90S-B3 · ER80S-B6 · ER80S-B8
For P22 projects, buyers can provide:
Base Material + Welding Process + AWS Classification + Diameter + Application
This allows the required consumable and documentation to be evaluated before ordering.
Quick P22 Selection Checklist
Before sending a purchase inquiry, confirm:
P22 / T22 / Grade 22
↓
GTAW / GMAW / SMAW
↓
ER90S-B3 or specified B3 electrode
↓
Required diameter
↓
WPS/PQR + PWHT
↓
TDS + MTC/CoA + Traceability
This simple checklist can help reduce the risk of ordering the wrong product form or an unqualified substitute.
Conclusion
For P22 steel welding, the right consumable depends on the welding process and qualified procedure.
For applicable GTAW and GMAW applications, ER90S-B3 is commonly associated with the 2.25Cr-1Mo system. For SMAW, a qualified B3 covered electrode may be specified instead.
Do you know,
What Are Cr-Mo Welding Consumables? Grades, Materials and Applications
Please visit,
The key is not simply choosing a “strong enough” welding consumable.
Match the base material, welding process, AWS classification, WPS/PQR and PWHT requirements before purchasing.
