Masterweld MW17-4PH Martensitic Stainless Steel TIG Welding Rods
£226.80
inc VAT
£189.00
ex VAT
£213.00
inc VAT
£177.50
ex VAT
£201.60
inc VAT
£168.00
ex VAT
MasterWeld MW17-4PH
MasterWeld MW17-4PH
Product Description:
MasterWeld MW17-4PH is a martensitic precipitation-hardening stainless steel TIG (GTAW) welding wire, conforming to AWS A5.9 ER630 specifications. It's engineered for welding materials like ASTM A564 Type 630 (17-4 PH) and similar alloys such as 15-5 and 17-7 stainless steels. The weld deposits exhibit high strength, good corrosion resistance, and excellent mechanical properties, making it suitable for applications in aerospace, petrochemical, and general engineering industries.
Chemical Composition (Typical)
| Element | Weight % |
|---|
| C | 0.05 max |
| Mn | 0.25–0.75 |
| Si | 0.75 max |
| Cr | 16.0–16.75 |
| Ni | 4.5–5.0 |
| S | 0.03 max |
| P | 0.03 max |
| Mo | 0.75 max |
| Cu | 3.25–4.00 |
| Nb+Ta | 0.15–0.30 |
Mechanical Properties (As Welded)
| Property | Value |
|---|
| Tensile Strength | 160,000 psi (1,103 MPa) |
| Yield Strength | 145,000 psi (1,000 MPa) |
| Elongation | 5.0% |
| Hardness | 108 HRB / 327 HB |
Welding Guidelines
- Welding Process: GTAW (TIG)
- Shielding Gas: 100% Argon
- Preheat: Not required for sections under 4 inches; interpass temperatures up to 300°F (149°C) are commonly used
- Post-Weld Heat Treatment: Recommended to achieve properties comparable to the base metal
Standards and Approvals
- AWS A5.9 / ASME SFA 5.9: ER630
- AMS 5825
- UNS S17480
Typical Applications
- Aerospace components
- Petrochemical equipment
- High-strength shafts and gears
- Valves and fasteners
- Marine hardware