What piping material is used in Aerospace & Defence plants?
Aerospace & Defence service typically specifies Titanium Grade 2 and Grade 5 (Ti-6Al-4V), Inconel 625 and 718, Monel 400, A182 F316L, and 15-5 PH and 17-4 PH stainless where precipitation-hardened strength is specified. Kalp Alloys manufactures these grades in Ahmedabad, India, with EN 10204 3.1 or 3.2 mill test certificates issued in its own name.
Key Takeaways
- Grades this sector specifies: Titanium Grade 2 and Grade 5 (Ti-6Al-4V), Inconel 625 and 718, Monel 400, A182 F316L, and 15-5 PH and 17-4 PH stainless where precipitation-hardened strength is specified.
- Standards applied: ASME B16.5 and EN 1092-1 for flanged connections, ASTM B381 for titanium forgings, ASTM B564 for nickel alloy forgings, and customer drawings throughout.
- Documentation demanded: EN 10204 3.1 as a minimum and 3.2 where the programme requires it, with full heat traceability, positive material identification on every alloy item, and record retention for the life of the programme.
- Kalp Alloys manufactures all of the above at its own plant in Ahmedabad, with certificates issued in its own name.
- Third-party inspection by SGS, BV, TUV or Lloyds can be witnessed before dispatch.
- Size range NPS 1/2 inch to 48 inch, Class 150 to 2500 and PN6 to PN64.
What makes Aerospace & Defence service demanding
Aerospace and defence work means small quantities, exotic alloys, tight tolerances and documentation that has to survive audit years later. Traceability is the governing requirement rather than volume.
Grades specified in Aerospace & Defence plants
Titanium Grade 2 and Grade 5 (Ti-6Al-4V), Inconel 625 and 718, Monel 400, A182 F316L, and 15-5 PH and 17-4 PH stainless where precipitation-hardened strength is specified.
Selection is made circuit by circuit rather than plant-wide. The table below maps the common positions in a aerospace & defence plant to the material normally specified for each.
| Application | Material normally specified |
|---|---|
| Ground support and test rigs | A182 F316L and titanium Grade 2 |
| Hydraulic and fuel test circuits | Inconel 625 and 316L high-pressure fittings |
| Engine test bed piping | Inconel 718 and titanium Grade 5 |
| Naval and marine defence systems | Cu-Ni 90/10 and super duplex F53 |
| Structural and mounting hardware | Titanium Grade 5 and 17-4 PH fasteners |
| Cryogenic and propellant handling | A182 F304L and A350 LF2 with impact testing |
Standards this sector works to
ASME B16.5 and EN 1092-1 for flanged connections, ASTM B381 for titanium forgings, ASTM B564 for nickel alloy forgings, and customer drawings throughout.
Both the dimensional standard and the material specification appear on a correct purchase order, because they govern different things. A line item reading “weld neck flange, 6 inch, Class 300, RF, ASTM A182 F316L, ASME B16.5” is unambiguous; one reading “6 inch stainless flange” is not.
Documentation Aerospace & Defence buyers require
EN 10204 3.1 as a minimum and 3.2 where the programme requires it, with full heat traceability, positive material identification on every alloy item, and record retention for the life of the programme.
Quantities in this sector are small and the temptation is to treat them as trivial orders. They are the opposite: a six-piece order in titanium Grade 5 to a customer drawing carries more documentation than a hundred-tonne carbon steel package. We quote them on that basis and keep the heat records against the drawing number.
The full document pack, and how to read each block of the certificate, is set out on our EN 10204 mill test certificate page.
Supplying Aerospace & Defence projects from Ahmedabad
Kalp Alloys is a manufacturer, not a stockist. Forging, machining and inspection run at our own facility at 5, Jay Vijay Industrial Estate, B/h. Akash Vikas Estate, Keval Kanta Road, Rakhial, Ahmedabad, so the heat number traces to our own record and the mill test certificate carries our name.
For a sector where the certificate forms part of an approval file, a validation record or a class submission, that difference is the whole argument. A certificate passed down a trading chain names a mill the buyer cannot query and did not choose.
Stock sizes dispatch in three to seven days. Made-to-drawing items carry a firm lead time quoted at order confirmation, and there is no minimum order on stock sizes.
Frequently Asked Questions
Titanium Grade 2 and Grade 5 (Ti-6Al-4V), Inconel 625 and 718, Monel 400, A182 F316L, and 15-5 PH and 17-4 PH stainless where precipitation-hardened strength is specified.
ASME B16.5 and EN 1092-1 for flanged connections, ASTM B381 for titanium forgings, ASTM B564 for nickel alloy forgings, and customer drawings throughout.
EN 10204 3.1 as a minimum and 3.2 where the programme requires it, with full heat traceability, positive material identification on every alloy item, and record retention for the life of the programme.
Yes. Inspection by SGS, BV, TUV or Lloyds can be witnessed at our Ahmedabad plant before dispatch, and the release note is issued with the EN 10204 3.2 certificate.
Yes. Non-standard bores, thicknesses, drilling patterns and facing finishes are produced to customer drawing. Send the drawing by email or WhatsApp at +91 81608 73937 and the technical team responds with grade and forging options.
No. There is no minimum order on stock sizes and trial quantities are accepted, so a buyer can verify material and documentation before committing to a project quantity.