Aerospace
Aerospace material selection is dominated by certification and traceability rather than cost. Precipitation hardening grades provide the strength-to-weight needed for fittings and structural parts, while stabilised austenitics handle exhaust and hot-gas paths where thermal cycling would otherwise sensitise the weld.
What gets specified in aerospace
Ordered by how commonly they are called for in this sector.
- UNS S1740017-4 PHPREN 20
Martensitic PH grade. Machine soft, then age to tensile strengths above 1300 MPa.
- UNS S32100 / S32109321 / 321HPREN 19
304 stabilised with titanium. Resists sensitisation in the 425–815 degrees C range.
- UNS S34700 / S34709347 / 347HPREN 19
Stabilised with niobium rather than titanium. Preferred where weld filler purity matters.
- UNS N06600Inconel 600
Nickel-chromium-iron alloy. Resists oxidation and chloride SCC to high temperature.
- UNS N02200Nickel 200
Commercially pure nickel, minimum 99% Ni. The caustic service standard.
Applications
05- Exhaust systems and collector rings
- Hydraulic and fuel lines
- Structural fittings and brackets
- Engine mount hardware
- High-strength fasteners
Governing standards
04- AMS 5643
- AMS 5510
- AMS 5646
- ASTM A564
Verification available
10- Spectrometer
- Chemical Testing Laboratory
- Positive Material Identification (PMI)
- Spectro Test
- Tensile Testing Machine
- Hardness Testing Machine
- Portable Hardness Tester
- Flattening Test
- Reverse-Bend Test
- Hydrostatic Test Machine
What aerospace buys
Other industries
Supplying into aerospace?
Send the specification and service conditions. We will confirm the grade, the availability and the documentation you will need.