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Austenitic Stainless Filler Metal
ER307 wire for dissimilar joints, buffer layers and demanding fabrication routes
ER307 is a high-manganese austenitic stainless filler-metal classification used where the approved welding procedure requires a ductile deposit and tolerance for mixed or difficult-to-weld base materials. It is frequently evaluated for dissimilar joints, buffer layers and repair work, but the final choice must be made from the base-metal combination, service temperature, dilution and qualified WPS.
ClassificationER307
Primary useDissimilar joints and buffer layers
Supply routeSpool wire & cut rods
Request ER307 stainless steel welding wire with the required standard, dimensions, tolerance, finish, inspection and mill test certificates from SAKY METAL.
Technical procurement data
Standards, supply and inspection
ER307 Stainless Steel Welding Wire | YS307 | DIN 1.4370 ER307 is a high-manganese austenitic stainless filler-metal classification used where the approved welding procedure requires a ductile deposit and tolerance for mixed or difficult-to-weld base materials. It is frequently evaluated for dissimilar joints, buffer layers and repair work, but the final choice must be made from the base-metal combination, service temperature, dilution and qualified WPS.
| Material / grade | ER307; GB/T H0Cr20Ni8Mn6Mo; JIS YS307; DIN 1.4370 |
|---|---|
| Product form | Bare solid welding wire on spool and straight cut-length filler rods by enquiry; other bare-wire packages subject to review. |
| Standards and order reference | AWS A5.9/A5.9M classification; state required revision plus project, code and WPS references. |
| Dimensions and tolerances | Specify welding process, wire or rod diameter, cut length where applicable, spool or package type and tolerance. |
| Surface and supply condition | Clean bare filler metal, securely packaged to limit handling damage and contamination; storage requirements by purchase order. |
| Inspection options | Visual and dimensional inspection, classification or chemistry review, traceability and purchaser-specific testing by agreement. |
| MTC and traceability | Certificate of conformance and heat or batch traceability; EN 10204 documentation or additional records when agreed. |
| Typical applications | Dissimilar stainless-to-steel joints; Buffer and transition layers; Repair welding under an approved procedure; Fabricated equipment with high joint restraint |
| RFQ checklist | Grade and standard revision; base metals; process; diameter; package; quantity; WPS; testing; certificates; destination; service conditions. |
Final compliance is defined by the purchase order, approved drawing and issued mill documentation. Availability is confirmed for each grade, size and production route.
SAKY METAL reviews ER307 enquiries against the stated classification, welding process, diameter, package, base materials, WPS, service conditions, inspection scope and documentation. Availability is confirmed for each requested combination; no stock, mechanical-property or corrosion-performance claim is implied without an agreed specification.
Selection note: Confirm both base materials, dilution, restraint and service temperature. ER307 should not be substituted for another stainless filler solely because a cross-reference looks similar.
Grade Designations and Cross-References
| Product designation | ER307 bare welding electrode / rod |
|---|---|
| AWS order reference | AWS A5.9/A5.9M ER307; confirm the required standard revision |
| GB/T cross-reference | H0Cr20Ni8Mn6Mo |
| JIS cross-reference | YS307 |
| DIN / European reference | 1.4370 |
| Important | Cross-references support material review but are not blanket substitution approvals. The purchase order, applicable standard revision and qualified WPS govern acceptance. |
Supply Forms and Ordering Parameters
| GMAW / MIG | Bare solid wire on spool or basket by enquiry; specify diameter, package style and net weight. |
|---|---|
| GTAW / TIG | Straight cut-length filler rods by enquiry; specify diameter, rod length, package and identification. |
| Other processes | Submerged-arc or other bare-wire requirements are reviewed against the process, wire/flux combination and governing procedure. |
| Dimensions | Diameter and tolerance must be stated on the RFQ; availability is confirmed for the requested process and package. |
| Identification | Grade, classification, batch or heat reference, size and package identification as required by the purchase order. |
| Documentation | Certificate of conformance, chemistry or classification records and EN 10204 documents when agreed. |
Typical Application Areas
- Dissimilar stainless-to-steel joints
- Buffer and transition layers
- Repair welding under an approved procedure
- Fabricated equipment with high joint restraint
These application areas are selection prompts rather than design approvals. Confirm filler compatibility through engineering review, the governing construction code and a qualified welding procedure.
Quality, Traceability and Welding Control
Before productionVerify grade, batch and WPS
Match package identification and certificates to the released procedure before wire enters production.
During weldingControl procedure variables
Use the qualified process, shielding system, heat-input range, interpass limit and contamination controls.
After weldingInspect to the project plan
Apply the specified visual, NDT, mechanical, chemistry or corrosion tests and retain traceability records.
Send a Complete ER307 Welding Wire RFQ
Include ER307 and the applicable standard revision, both base metals, welding process, wire or rod diameter, package or rod length, quantity, WPS or project specification, shielding requirements, inspection and certificate scope, delivery destination and relevant service conditions.
Related Welding Wire Products
- ER308 Stainless Steel Welding Wire | YS308 | DIN 1.4316
- ER309 Stainless Steel Welding Wire | YS309 | DIN 1.4332/1.4337
- ER310 Heat-Resistant Stainless Steel Welding Wire | YS310 | DIN 1.4842
- ER316 Molybdenum-Bearing Stainless Steel Welding Wire | YS316 | DIN 1.4430
- ER2209 Duplex Stainless Steel Welding Wire | YS2209 | DIN 1.4462
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ER307 Welding Wire FAQs
What is ER307 welding wire commonly considered for?
It is commonly evaluated for dissimilar joints, buffer layers and difficult-to-weld assemblies where a ductile austenitic deposit is required by the WPS.
Is ER307 interchangeable with ER308 or ER309?
No automatic substitution should be made. Base metals, dilution, ferrite balance, service conditions and the qualified procedure determine the acceptable filler.
Can ER307 be supplied as MIG wire and TIG rods?
Spool wire and straight cut-length rod requirements can be reviewed. State process, diameter, package, quantity and applicable classification.
What information controls final product acceptance?
The purchase order, cited classification and revision, approved WPS, agreed test plan, package identification and issued material documentation control acceptance.
Technical References
References define classification scope and selection context. They do not replace the project specification, current standard revision, qualified procedure or supplied certificate.