What aerospace standards and certifications apply to Neway’s titanium machining?
The aerospace standards and certifications that may apply to Neway’s titanium machining include AS9100 or ISO 9001 quality-system requirements, AMS and ASTM titanium material specifications, customer or OEM drawing requirements, Nadcap-controlled special processes when required, GD&T inspection rules, and full material traceability. The exact requirement is not chosen by the supplier alone. It depends on the aircraft program, part criticality, drawing notes, purchase order, material grade, heat treatment, NDT requirement, and whether any special process is performed in-house or by an approved outside processor. Buyers should request current certificates, scope statements, material records, and process records before treating a quote as aerospace-ready.
The Foundation: AS9100 Quality Management System
AS9100 Rev D is the aerospace quality management standard built on ISO 9001, with added focus on risk management, configuration control, product safety, counterfeit-part prevention, and documented process control. For a Titanium CNC Machining Service, the buyer should verify whether the supplier’s current certification covers the site, process scope, and product type being quoted. A certificate number alone is not enough. The purchasing file should include the valid certificate, expiry date, accredited certification body, scope wording, and any customer-specific quality clauses. If AS9100 is not required by the drawing, ISO 9001 plus customer flow-down requirements may still be acceptable, but that decision belongs to the buyer and end customer.
Controlling the Material: AMS and ASTM Standards
Aerospace titanium quality starts with the correct material specification, product form, and heat lot. Common references may include the following, but the drawing or purchase order decides which one applies:
AMS 4928: Commonly associated with Ti-6Al-4V wrought products such as bars, forgings, rings, and related forms when the specification and revision match the order.
AMS 4934: Used for certain Ti-6Al-4V forging products, with acceptance depending on product form, condition, and current revision.
AMS 4967: Applies to specific Ti-6Al-4V ELI product requirements when that grade and form are called out; it should not be substituted for Grade 5 unless the drawing allows it.
ASTM B348: Covers titanium and titanium alloy bars and billets, including chemistry and mechanical-property requirements for designated grades.
Material compliance means matching the certificate to the PO, drawing, heat number, grade, condition, and required revision. The inspection team should confirm chemistry, tensile properties, yield strength, elongation, hardness if required, and any supplementary requirement before machining starts.
Validating the Processes: NADCAP Accreditation
Nadcap is relevant when aerospace customers require accredited special processes, but it should not be written into a quote unless the applicable process and approved processor are clear. For titanium machining, Nadcap may matter when heat treatment, NDT, chemical processing, coatings, welding, or other special processes are included in the route.
Heat Treating: Titanium can be sensitive to temperature, atmosphere, contamination, and cooling route. A required Heat Treatment for CNC Machining step should identify the alloy, condition, furnace controls, certification record, and whether the processor is Nadcap-approved for the specific scope.
Non-Destructive Testing (NDT): FPI, ultrasonic testing, radiography, or other NDT methods may be required for critical titanium parts. The acceptance standard, inspector qualification, part surface condition, and process scope should be defined before machining changes the surface.
Ensuring Part Integrity: Geometric Dimensioning and Tolerancing (GD&T)
Aerospace drawings often use GD&T to define how a titanium part must function in assembly. The inspection plan for Precision Machining Service and Multi-Axis Machining Service parts should identify datums, true position, profile, runout, flatness, and any constrained free-state requirements. Standards such as ASME Y14.5 or ISO GPS may apply if referenced by the drawing. The buyer should confirm whether inspection occurs after heat treatment, after coating, after unclamping, or at final free state. A part can pass a local size check and still fail profile, datum shift, or runout requirements if the inspection strategy is incomplete.
Meeting Original Equipment Manufacturer (OEM) Requirements
OEM and tier-one requirements can be more specific than general aerospace standards. They may define approved material sources, frozen process plans, first article inspection, special-process suppliers, packaging, serialization, record retention, and deviation approval. For parts used in Aerospace and Aviation systems, buyers should flow down the exact clauses from the drawing, PO, and customer quality manual. A supplier should not assume that a general aerospace statement covers proprietary OEM requirements. If approved-supplier status is required, request written confirmation for the relevant site and process scope.
A Culture of Compliance and Traceability
The practical compliance test is traceability. A titanium aerospace package should connect material certs, heat lot, traveler, revision level, machining route, special-process certs, inspection report, nonconformance records, and shipment identity. Buyers should ask which records are retained, for how long, and in what format. If a part needs FAIR, NDT reports, heat-treatment records, or coating certificates, those requirements should be stated before production. The safest sourcing decision is to verify current certificates and records rather than relying on a broad claim of aerospace capability.
