Managed sourcing for stainless steel machined parts in 1.4305, 1.4404, 1.4435 and special grades, from drawing review to delivery.
One accountable teamCNC-Turkey manages international sales, engineering communication, production coordination, quality documentation and export operations. Manufacturing is carried out through an established machining infrastructure in Istanbul, Türkiye.
Drawing-based manufacturing · Türkiye
Manufacturing heritage
Since 1978
CNC turning
Up to approximately Ø740 mm for suitable components
CNC milling
Approximately 1000 × 600 × 500 mm
Export support
Europe, USA and Australia
Stainless steel is widely specified for corrosion resistance, hygiene requirements and high-temperature performance in food processing, chemical, medical and general industrial applications. CNC Turkey coordinates sourcing of turned and milled stainless steel parts in 1.4305, 1.4404 and 1.4435 from prototype to series via Istanbul-based machining infrastructure.
1.4305 (303) is widely used for general-purpose stainless parts due to its free-machining characteristics.
1.4404 (316L) is specified for chemical and medical applications due to its weldability and enhanced corrosion resistance.
1.4435 is used for critical chemical process components requiring low ferrite content.
✓1.4305 / AISI 303
✓1.4404 / AISI 316L
✓1.4435 / AISI 316L low ferrite
✓1.4122 / AISI 420
✓Other grades reviewed subject to drawing and availability.
Challenges in stainless steel CNC machining
Stainless steel requires special attention in CNC machining due to its lower thermal conductivity, higher work-hardening tendency and more intense cutting forces compared to carbon steel. These properties directly affect cutting parameters, tooling selection and cooling strategy.
Austenitic stainless steels such as 1.4404 and 1.4435 exhibit more pronounced work-hardening than 1.4305. For this reason, tool geometry, cutting speed and cooling approach are evaluated for these grades at the quotation stage.
Surface finish and tolerances for stainless steel parts
Ra 1.6 µm is the standard value for a machined surface in stainless steel. For hygiene or corrosion requirements, lower Ra values (Ra 0.8 or below) can be specified; this may require additional machining operations or polishing.
For dimensional tolerances, ISO 2768-m is the standard starting point for general engineering parts. For critical fits and precision components, IT7 tolerances can be achieved in stainless steel with appropriate process planning.
✓Ra 0.8 µm — food contact, chemical process, medical device surfaces
✓Ra 1.6 µm — standard machined surface, general engineering
✓Ra 3.2 µm — rough-machined or non-functional surfaces
Typical stainless steel CNC machined part applications
Stainless steel CNC parts are typically used in systems exposed to corrosive environments, requiring hygiene standards or operating at elevated temperatures.
✓Food and beverage equipment — hygiene surface, cleanability requirements (1.4404)
✓Chemical process equipment — acidic/alkaline environment resistance, low-ferrite requirements (1.4435)
✓Medical and laboratory equipment — surface purity, hardness requirements (1.4122)
Why source stainless steel CNC parts from Turkey?
Turkey has a solid material sourcing infrastructure for 1.4305, 1.4404 and 1.4435. Under the EU Customs Union, stainless steel machined parts enter Europe with zero tariff. Road freight to Europe provides 3–6 days transit; sea freight 10–15 days.
EN 10204 3.1 material certificate, dimensional measurement report and, where required, ferrite measurement or surface roughness measurement report can be coordinated when agreed at the quotation stage.
Manufacturing
What we coordinate for your drawing
•CNC turning, milling and multi-task machining for suitable geometries
•Prototype, low-volume, medium-series and repeat production
•Coordination of material, heat treatment, grinding, coating and inspection services
•Drawing-based review of tolerances, surface requirements and documentation
Sourcing
Clear accountability, not a workshop search
—One team for international sales, technical communication, quality documentation and export
—Manufacturing carried out through an established machining infrastructure in Istanbul
—A route selected between group capability and a qualified supplier network for the part
—Traceable project coordination from quotation through packing and shipment
RFQ
From drawing review to export shipment
01
Share the drawing and CAD file
02
Review manufacturability, material and critical requirements
03
Confirm material, quantity and quality requirements
04
Receive a quotation with lead time and delivery terms
05
Agree the sample or first-article approach where required
You can send PDF drawings, STEP/STP, IGES/IGS, DXF, DWG and ZIP files, together with quantity, material, critical tolerances and delivery country.
Can material certificates be supplied?
EN 10204 3.1 material certificates can be supplied when requested and agreed during quotation. Source, form, dimensions and purchase conditions affect availability.
What if CMM inspection or a detailed dimensional report is required?
Dimensional inspection uses suitable conventional measuring equipment. Where CMM inspection, detailed dimensional reports or third-party verification are required, these services can be coordinated through a qualified measurement network.
How quickly will I get a first response?
We typically send the first technical response to your enquiry within 2 business days.
Which Incoterms do you support?
EXW, FCA Istanbul, DAP and CIF/CFR (sea freight) are supported; the exact Incoterm is agreed during quotation.
RFQ
Send your drawing for a manufacturing review
Quantity, material, quality requirements and delivery country help us review the appropriate manufacturing and shipment route.
