Materials and grades
Grades we cut regularly, with process parameters already proved. If your grade is not listed, send the specification — most of these families extend further than the list.
Titanium
Nickel alloy
Steel and stainless
Aluminium
How each family behaves, and what we do about it
Material choice drives the whole route — tooling, speeds, coolant, the order of operations and where stress relief has to sit. This is what we plan for before the job reaches a machine.
Titanium alloys
Low thermal conductivity puts the heat into the tool, and the material work-hardens if you dwell in the cut. We run rigid setups, sharp carbide, high-pressure coolant and constant chip load, and we do not re-cut a surface that has already been skinned.
- Ti-6Al-4V sheet, plate, bar and forging stock
- ASTM-F136 for implant-grade requirements
- Stress relief staged between roughing and finishing on thin sections
Nickel superalloys
Inconel 718 and 909 load the tool and push cutting forces up. Fixturing has to be stiffer than the part wants, and tool life is tracked per feature rather than per shift.
- Solution treated and aged condition handled either side of machining
- Ceramic and coated carbide tooling depending on feature
- Tool-life data recorded against the job number
Stainless and alloy steels
17-4 PH and 15-5 PH move on ageing, so critical features are cut after heat treatment where the drawing allows it. EN 8, EN 19 and EN 24 cover the general engineering and defence work.
- Condition A, H900 and H1025 routes handled
- Passivation through approved partners
- SS 303 / 304 / 316 / 420 for corrosion and wear duty
Aluminium alloys
6061-T6 and 7075-T6 machine fast, which makes it easy to lose flatness on thin plates. We rough, relieve and finish rather than cutting to size in one pass.
- T651 plate for dimensionally stable structural parts
- Anodising Type II / Type III and chromate conversion via partners
- HE 15 and HE 20 for legacy Indian specifications
Material supply and traceability
Where the metal comes from, and what follows it through the shop.
Material is bought against the specification on your drawing, from approved suppliers, with a mill test certificate that is filed against the job number before the bar is cut.
Every piece carries its identity through the shop — heat or lot number on the route card, on the part where marking is permitted, and on the certificate of conformance that ships with the batch. If you free-issue material, we account for it the same way and return the offcuts with the consignment.
What ships with the parts
- Mill test certificate for the heat used
- Certificate of conformance against drawing revision
- Dimensional report from the CMM
- Surface roughness record where the print calls it
| Form | Notes |
|---|---|
| Round bar | Turned and milled parts; cut to length in-house |
| Plate and sheet | Structural and bracket work; T651 preferred for stability |
| Forgings and near-net | Machined to print from customer-supplied or sourced forgings |
| Free-issue | Accepted, reconciled and returned with offcut account |
Working to a grade that is not on this list? Send the specification with your enquiry. Most requests fall inside a family we already run, and we will say so honestly if one does not.
Send the drawing. Get a price in 24 hours.
Tell us the material, the quantity, the tightest tolerance on the print and which inspection documents you need. We come back inside one working day with feasibility, price and a date.