
Hook:
In the fabrication of large-scale stainless steel components, achieving consistent, high-quality welds with good mechanical properties and corrosion resistance requires a welding system that offers both productivity and process stability.
Product Overview:
MH0Cr21Ni10 Submerged Arc Welding Wires (SAW) is designed to be used with a dedicated stainless steel alkaline flux, typically SJ601, for the welding of austenitic stainless steels. The resulting weld metal is formulated to provide a combination of satisfactory mechanical properties and intergranular corrosion resistance, along with good resistance to hot cracking.
Typical Applications:
This wire is applied in industries such as petrochemical processing for welding materials like 12Cr18Ni9 (SUS 302) and 06Cr19Ni10 (SUS 304) and similar austenitic grades.
Technical Specifications:
1. Wire Chemical Composition (wt%)
Element | C | Mn | Si | Cr | Ni | P | S |
|---|---|---|---|---|---|---|---|
Guarantee | ≤0.080 | 1.00-2.50 | ≤0.60 | 19.50-22.00 | 9.00-11.00 | ≤0.030 | ≤0.030 |
General Result | 0.056 | 1.43 | 0.30 | 19.81 | 9.45 | 0.021 | 0.006 |
2. Deposited Metal Composition (with SJ601 Flux) (wt%):
Element | C | Mn | Si | Cr | Ni | P | S |
|---|---|---|---|---|---|---|---|
Guarantee | ≤0.08 | 0.50-2.50 | ≤1.00 | 18.0-21.0 | 9.0-11.0 | ≤0.040 | ≤0.030 |
General Result | 0.030 | 1.23 | 0.47 | 19.20 | 9.42 | 0.025 | 0.013 |
3. Deposited Metal Mechanical Properties (with SJ601 Flux):
Property | Tensile Strength (Rm) | Elongation (A) | Flux Used |
|---|---|---|---|
Guarantee | ≥520 N/mm² (MPa) | ≥30% | JQ.SJ601 |
General Result | 590 MPa | 42% | JQ.SJ601 |
4. Reference Welding Parameters (AC or DC+):
Wire Diameter (mm) | Φ2.5 | Φ3.2 | Φ4.0 | Φ5.0 |
|---|---|---|---|---|
Welding Current (A) | 400-500 | 450-550 | 500-600 | 550-650 |
Process Recommendations:
Preheating/Interpass Temperature: It is suggested to maintain a temperature around 150°C in the weld bead area.
Welding Procedure: Operators should adhere to established welding procedures. Maintaining consistent welding current and travel speed helps manage heat input and minimize the risk of base metal distortion.
Flux Handling: A drying process (e.g., 2 hours at 300-350°C) is recommended for the flux prior to use to remove moisture.
Important Note:
The information and suggestions provided are for reference. Conditions should be evaluated and procedures determined according to the specific job requirements before commencing welding operations.
For application engineering support and to discuss pairing this wires with the correct flux for your project, please contact our technical department.
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