Qu17-4PH TIG filler wire – 1.4542 / 17-4PH (X5CrNiCuNb16-4 / AISI 630)
Qu17-4PH TIG filler wire – 1.4542 / 17-4PH (X5CrNiCuNb16-4 / AISI 630)
Qu17-4PH is a precipitation-hardening, corrosion-resistant laser welding wire of the alloy 17-4PH (material 1.4542 / X5CrNiCuNb16-4, AISI 630). This martensitic chromium-nickel-copper steel combines high strength with good corrosion resistance — ideal for repair and build-up welding in tool and mould making as well as on pump, valve and shaft components.
Recommended base materials
- 1.4542 — X5CrNiCuNb16-4 / 17-4PH / AISI 630 (primary material)
- 1.4540 — X4CrNiCuNb16-4 (identical-type variant)
- 1.4548 — X5CrNiCuNb17-4 (identical-type variant)
Typical applications
- Tool and mould making — repair and build-up welding
- Pump, valve and fitting components
- Shafts, axles and highly stressed machine parts
- Offshore, chemical and food technology
- Aerospace components
Properties and advantages
- Precipitation-hardening (Cu/Nb) — high strength through ageing (heat-treatment conditions H900/H1025/H1150)
- Achievable hardness 37–40 HRC per manufacturer datasheet
- Good corrosion resistance at high mechanical load capacity
- Identical-type weld metal for durable, low-crack joints
- Shielding gas: argon 4.6 or better; adapt heat control to the aged condition of the component
TIG advantage: For manual repair welding on moulds, tools and functional surfaces with precise heat input.
TIG form: for manual repair welding.
Material analysis (wt.-%)
Cr 15.0–17.5 | Ni 3.0–5.0 | Cu 3.0–5.0 | Nb 0.15–0.45 | Mn ≤1.0 | Si ≤1.0 | C ≤0.07 | Fe balance
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| Achievable hardness: | 37 - 40 HRC |
|---|---|
| Diameter: | 1,6 mm |
| Recommendations for basis material: | 1 .4548 X5CrNiCuNb17-4-4, 1.4540 X4CrNiCuNb16-4, 1.4542, 1.4542 X5CrNiCuNb16-4 |
| Refinish: | material typical treatment |
| Rod length: | 1000 mm |
| Wire: | WIG wire |
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