E307-16 Stainless Steel Welding Electrode Supplier
AWS A5.4 High-Manganese 18/8 Mn SMAW Rod from Ocean Welding.
China Factory Since 1995
Why Choose Ocean Welding for
E307-16?
Are you looking for a supplier of E307-16 stainless steel welding electrodes that offer stable performance and excellent crack resistance? Ocean Welding (the export brand of Hangzhou Lin'an Ocean Welding Materials Co., Ltd., established in 1995) manufactures E307-16 electrodes-part of its stainless steel SMAW (Shielded Metal Arc Welding) series and corresponding to the GB/T 983 standard designation A172-that comply with AWS A5.4 standards. The E307-16 is an 18Cr-8Ni, high-manganese (3.5%–5.5% Mn content) austenitic stainless steel electrode featuring a titania-calcium (rutile-calcium) type coating; it is specifically designed for joining dissimilar metals, repairing Hadfield (ZGMn13) manganese steel, welding armor plate, and applying buffer layers prior to hardfacing. The deposited metal exhibits a tensile strength of ≥ 590 MPa and an elongation of ≥ 25%, along with excellent resistance to hot cracking.
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Welding Consumables Product Series (SKU)
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Products Description
Ocean Welding E307-16 is an austenitic stainless steel welding electrode conforming to AWS A5.4 / A5.4M standards. It uses a titanium-calcium type coating and is suitable for AC/DC (AC/DC+) bipolar power supply and all-position welding. The weld metal is an austenitic weld metal with a nominal composition of 18Cr-8Ni-4Mn, and the δ-ferrite content is controlled within the range of 0–4 FN. This chemical composition endows E307-16 with three key characteristics that set it apart from other products in its class, characteristics that competing welding electrodes such as E308, E309, or E316 cannot simultaneously possess:
- High manganese content provides excellent resistance to hot cracking, making it an ideal choice for high-constraint applications and dissimilar metal joining;
- The weld metal is virtually non-magnetic, making it suitable for non-magnetic components and shielding applications;
- It is compatible with unknown steels, making it the industry's preferred electrode when the base metal composition is unknown.
E307-16 is manufactured by Ocean Welding in compliance with AWS A5.4 E307-16 and GB/T 983 A172 standards, and every batch is accompanied by a Mill Test Certificate.
Technical Specifications
Classification and parallel designations
| Standard | Designation |
|---|---|
| AWS A5.4 / A5.4M | E307-16 |
| GB/T 983 | A172 |
| ISO 3581-A | E 18 8 Mn R (nearest match) |
| ASME | SFA-5.4 E307-16 |
| JIS Z 3221 | ES307-16 |
Chemical composition (deposited metal, wt%)
| Element | AWS Range | Ocean Welding Typical |
|---|---|---|
| C | ≤ 0.12 | 0.06 – 0.10 |
| Mn | 3.30 – 4.75 | 4.0 – 4.5 |
| Si | ≤ 0.90 | 0.30 – 0.70 |
| Cr | 18.0 – 21.5 | 18.5 – 20.5 |
| Ni | 9.0 – 10.7 | 9.0 – 10.0 |
| Mo | 0.50 – 1.50 | ≤ 1.0 |
| P | ≤ 0.04 | ≤ 0.025 |
| S | ≤ 0.03 | ≤ 0.020 |
| Ferrite Number (FN) | 0 – 4 | 1 – 3 |
Mechanical properties (deposited metal, as-welded)
| Property | Value |
|---|---|
| Tensile strength Rm | ≥ 590 MPa (typical 590 – 660 MPa) |
| Yield strength Rp0.2 | ≥ 400 MPa (typical) |
| Elongation A₅ | ≥ 25% |
| Charpy V-notch @ +20 °C | ≥ 48 J |
| Hardness (as-welded) | ~ 180 – 220 HV |
| Ferrite number FN | 0 – 4 (near non-magnetic) |
| Max service temperature | up to 300 °C recommended (short-term higher) |
Recommended Welding Procedure
| Step | Recommendation |
|---|---|
| Joint prep | Remove rust, oil, mill scale and moisture within 25 mm; grind out surface cracks on Hadfield / armor plate |
| Re-drying | Standard: 150 °C × 1 h before use. If exposed to humid air: 150 – 180 °C × 40 – 60 min. Hold in a 100 °C portable oven at the welding station |
| Polarity | AC or DC+ (electrode positive) - DC+ gives smoother arc, lower spatter |
| Preheat | 304/321 stainless base metal: no preheat. Hadfield steel: no preheat, short arc, small bead. Thick / high-restraint sections (≥ 25 mm): 60 – 120 °C. Armor / hardened tool steel: 100 – 150 °C |
| Interpass temperature | ≤ 150 °C for Hadfield to avoid embrittlement; ≤ 180 °C for other base metals |
| Technique | Short-arc, stringer bead or narrow weave (≤ 2 × Ø). Peen each pass on Hadfield to release stress |
| Post-weld | No PWHT required. On Hadfield major repairs, apply water-quench solution treatment at 1050 – 1100 °C if base metal properties must be restored |
| Storage | Keep sealed carton in dry warehouse (RH < 60%). Re-dry per above if opened for > 8 h |
Grade Should I Choose?
E307-16 vs other E307 coating variants
| Grade | Coating | Polarity | Position | Best for |
|---|---|---|---|---|
| E307-16 (this product) | Titanium-lime (rutile-lime) | AC or DC+ | All-position | General use - best workability and arc stability |
| E307-15 | Lime-basic (low hydrogen) | DC+ only | All-position | Highest toughness / ductility; needs 250 °C × 1 h re-drying |
| E307-17 | Rutile-silicate | AC or DC+ | All-position (V-up limited) | Smoothest, most cosmetic bead appearance |
| E307-26 | Iron-powder rutile-lime | AC or DC+ | Flat / horizontal | High deposition rate for production welding |
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