Precipitation Hardening · Matches 17-4PH · Manufacturer Direct · Custom Options Available
ER630 is a martensitic precipitation-hardening stainless steel solid wire, designed for MIG, TIG, and SAW welding of 17-4PH, 15-5PH, and Type 630 stainless steels. The wire contains 17% chromium, 4% nickel, plus copper and niobium to form strengthening precipitates during heat treatment.
The weld metal offers excellent strength, hardness, and corrosion resistance. It can be used either as-welded or after solution and aging heat treatment.
Our ER630 is manufactured under strict quality control and complies with major international standards.
ER630
ER630
ER630
Are you looking for a manufacturer of high-strength, corrosion-resistant stainless steel welding wire?
Our ER630 wire strictly meets AWS A5.9 ER630 and AMS 5825 standards, suitable for MIG, TIG, and SAW welding of 17-4PH, 15-5PH, and Type 630 stainless steels. But unlike other suppliers, we offer:
✅ Custom chemistry – Adjust Cr, Ni, Cu, Nb content to meet special corrosion or heat treatment requirements
✅ Flexible packaging – Plastic spools, layer coils, TIG cut lengths, vacuum packs from 1kg to 200kg
✅ Wide size range – Diameters from 0.2mm to 3.2mm
✅ OEM accepted – Your brand, private label, neutral packing, or custom printed spools
In addition to ER630 welding wire, we also manufacture pipes, plates, bars and forgings in the same 17-4PH (UNS S17400) grade.
Whether you need bulk orders, trial production for special projects, or private-label wire, we respond fast.
| Standard | Grade |
| AWS A5.9 / ASME SFA-5.9 | ER630 |
| AMS | 5825D |
| UNS | S17480 |
| ISO 14343-B | SS630 |
| GB/T 29713 | S630 |
Third-party test reports and original mill certificates are available upon request.
| Element | C | Cr | Ni | Cu | Mn | Si | Mo | Nb (or Nb+Ta) | P | S |
|---|---|---|---|---|---|---|---|---|---|---|
| AWS Standard (wt%) | ≤0.05 | 16.00–16.75 | 4.50–5.00 | 3.25–4.00 | 0.25–0.75 | ≤0.75 | ≤0.75 | 0.15–0.30 | ≤0.030 | ≤0.030 |
| Condition | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) |
|---|---|---|---|
| As Welded | ~1100 | ~1000 | ≥5 |
| 480°C Aging | ~1250 | ~1100 | ≥7 |
| 620°C Aging | ~950 | ~750 | ≥12 |
Actual results depend on welding parameters and post-weld heat treatment.
| Welding Process | Diameters (mm) | Packaging Forms |
|---|---|---|
| MIG (GMAW) | 0.8 / 1.0 / 1.2 / 1.6 | Plastic spools (5kg, 15kg) |
| TIG (GTAW) | 1.6 / 2.0 / 2.4 / 3.0 | Cut lengths 914mm (36″) or custom |
| SAW | 2.4 / 3.0 / 3.2 | Layer coils, drums |
Other diameters (0.2mm to 3.2mm) and custom packaging (vacuum packs, OEM labelling) are available on request.
Ø In-house melting – We start from virgin alloys, not bought-in wire rod.
Ø Multiple drawing lines – Fine, medium, and thick wires in one plant.
Ø Flexible packaging lines – Quick changeover between spools, coils, cut lengths.
Ø Full quality control – Spectrometers, tensile tester, hardness tester, metallographic inspection.
Ø Export ready – Certificate of origin, commercial invoice, packing list, and dangerous goods certificate if needed.
📧 Send inquiry to: support@ronsteel.com
📠 Or contact via WhatsApp: +8617773160488
We will reply within 24 hours with a quote, chemistry feasibility check, and sample application.
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