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CNC Machined Stainless Sheet for Aerospace Industry

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High Precision Stainless Steel 304/316L Sheet Metal Machining Stamping Parts with Punching Metal Stamping Parts epitomize the pinnacle of precision engineering and metal fabrication. Crafted from top-grade stainless steel 304 or 316L, renowned for its exceptional durability and corrosion resistance, these parts are engineered to meet the most exacting standards of quality and performance.

Material:
Size:
Availability:
Quantity:
  • OEM/ODM

Stamping Parts


Product Overview


CNC Machined Stainless Sheet for Aerospace Industry is a highly reliable customized precision structural component solution purpose-built for the extreme working conditions of the aerospace sector. Centered on multi-axis simultaneous CNC precision machining technology and using aerospace-grade stainless steel as the core base material, it is tailor-made for the core requirements of the aerospace industry for extreme product accuracy, high structural strength, extreme environment resistance, full lifecycle traceability, and zero defects.
The product enables integrated precision machining of complex curved surfaces, multi-cavity structures, ultra-thin/ultra-thick profiles with micron-level accuracy. It directly addresses core pain points in the aerospace sector, including out-of-tolerance geometric tolerances of traditionally machined parts, deformation caused by internal stress release, poor batch consistency, structural failure under extreme working conditions, lack of full-chain traceability, and insufficient airworthiness compliance. We provide global aerospace OEMs, Tier 1 suppliers, and research institutes with one-stop end-to-end services covering drawing optimization, material selection, process development, precision machining, non-destructive testing, airworthiness documentation support, and finished product delivery. Our production system strictly complies with the AS9100 aerospace quality management system standard, and is fully adaptable to the customized needs of full aerospace scenarios including civil and military aviation, space launch, satellite equipment, and UAVs, making it a highly reliable supporting solution for core foundational structural components in aerospace equipment manufacturing.


Core Advantages for High-End Industrial Clients


As a reliable precision machining supporting partner in the global aerospace industry, we build six irreplaceable exclusive core advantages based on the aerospace industry's core principles of "zero defects, high reliability, traceability, and airworthiness compliance":
  1. Exclusive Technical Expertise and Process Accumulation in the Aerospace Sector

    With over 15 years of deep engagement in aerospace precision machining, we have served more than 50 global aerospace OEMs, research institutes, and Tier 1 suppliers. We have in-depth mastery of precision machining processes for aerospace-grade difficult-to-machine stainless steel, and possess core technologies including stress control, anti-deformation machining, and precision heat treatment of precipitation hardening stainless steel and high-temperature resistant stainless steel. We can perfectly solve the machining challenges of aerospace complex structural parts, ultra-thin wall parts, and high-precision mating parts, with rich full-cycle service experience in model matching, research trial production, and mass production.

  2. Full-Chain 100% Traceability System Adapted to Aerospace Airworthiness Requirements

    In response to the mandatory full lifecycle traceability requirements of the aerospace industry, we have built an exclusive digital traceability management system, achieving 100% full-process traceability from raw material incoming to finished product delivery. Each product is equipped with a unique traceability code, which can track full-dimensional data throughout the entire process, including the original mill heat number of raw materials, material certification, processing equipment parameters, operators, inspection records, heat treatment processes, and non-destructive testing reports. A complete traceability file can be delivered with the goods, fully adapting to the airworthiness management requirements of the world's major authorities including FAA, EASA, and CAAC.

  3. Full-Closed Loop High-End Precision Manufacturing Capability with No Outsourcing Risks

    We operate an independent Class 10000 clean machining workshop, 5-axis CNC machining centers, precision heat treatment workshop, non-destructive testing laboratory, and surface finishing production line, achieving full in-house control from raw material pre-treatment, rough machining, stress relief, finish machining, post-processing to inspection without any third-party outsourcing. This not only completely eliminates the risks of confidentiality breach, quality fluctuation, and schedule out of control caused by outsourcing, but also realizes unified control of the whole process technology and quality control, ensuring the confidentiality, consistency and reliability of aerospace products.

  4. Exclusive Aerospace Compliance and Certification Capability

    Our production system has passed the AS9100D Aerospace Quality Management System Certification (the core access certification for the global aerospace industry), NADCAP Special Process Certification (heat treatment, non-destructive testing), and has ITAR-compliant production capacity. We have in-depth familiarity with the world's major airworthiness specifications including FAA, EASA, and CAAC, and can provide a full set of process documents, First Article Inspection (FAI) reports, material traceability documents, and airworthiness supporting materials that meet the requirements of aerospace models, helping customers quickly complete model finalization and airworthiness certification.

  5. Extreme Precision Control and Flexible Production Capability

    We are equipped with imported 5-axis simultaneous CNC machining centers from DMG MORI (Germany) and Mazak (Japan), supported by high-end processing equipment such as precision grinding machines and jig boring machines. The maximum machining positioning accuracy can reach ±0.002mm, and the geometric tolerance is controlled within ±0.005mm, which can perfectly adapt to the micron-level accuracy requirements of aerospace products. At the same time, we seamlessly undertake orders of all volumes from single-piece research trial production, small-batch multi-variety model matching to 100,000-level mass production, perfectly adapting to the production characteristics of the aerospace industry of "multi-variety, small-batch, high requirements, and fast response".

  6. Aerospace-Grade Full-Process Technical Empowerment

    Our professional aerospace engineering R&D team, staffed with specialists in structural mechanics simulation, heat treatment process, non-destructive testing, and airworthiness management, provides customers with free DFM (Design for Manufacturability) and DFA (Design for Assembly) analysis. We intervene early in the product R&D stage to optimize product structure, material selection, processing technology and heat treatment solutions, and avoid risks such as stress concentration, machining deformation, and working condition failure in advance through finite element simulation. While ensuring product performance and reliability, we reduce processing costs, shorten model R&D cycles, and create core value for customers.


Product Specification Table


Item

Specification

Core Material

303/304/316L Stainless Steel (17-4 SUS630 optional)

Size

Customized by 2D/3D drawing (support micro-size processing)

MOQ

1 PCS (small batch high-precision trial production)

Tolerance

±0.0002in (for high-precision machining stamping parts)

Model

OEM/ODM (custom structural design supported)

Surface Treatment

Passivation, electropolishing, sandblasting (stainless steel-specific)

Quality Report

Material certification, QC report, salt spray test report


Materials & Manufacturing Process


High-Grade Stainless Steel Material Characteristics

We select top-grade stainless steel raw materials with stable chemical composition, matching different high-end industrial application scenarios:

303 Stainless Steel: Good machinability, suitable for precision stainless steel stamping parts with complex threads and slots;

304 Stainless Steel: Balanced corrosion resistance and cost, ideal for general high-end industrial equipment components;

316L Stainless Steel: Molybdenum-added for seawater/chemical corrosion resistance, for marine corrosion-resistant stainless steel stamping parts and aerospace components;

All materials are accompanied by official material certification to ensure product traceability.


Stainless Steel-Specific Production Process

Aiming at the high hardness and toughness of stainless steel, we adopt a specialized processing process: Product Design & Material Selection → High-Precision Laser Cutting → CNC Bending → Argon Arc Welding (stainless steel-specific) → Precision Machining → Stainless Steel Surface Treatment → Salt Spray Test → Quality Inspection → Anti-Oxidation Packaging → Shipping. Each process is optimized for stainless steel to avoid material deformation and oxidation.


Custom OEM/ODM Service


We provide professional 304/316L stainless steel stamping parts OEM/ODM service for high-end industrial clients, with customized solutions covering the entire production chain:

Professional material selection guidance: According to the client’s application environment (corrosion, temperature, load), recommend the most suitable stainless steel grade (303/304/316L);

Accept high-precision custom drawings: Support micro-dimensional and complex structural design, and provide free process optimization to ensure machining feasibility;

Custom performance testing: According to client needs, conduct salt spray corrosion test, mechanical strength test and dimensional accuracy test, and provide detailed test reports;

Flexible production: Support small-batch high-precision trial production and large-scale mass production, with real-time production progress feedback.


Quality Assurance


  • IQC (Incoming Quality Control)
    All incoming stainless steel raw materials are subject to mandatory spectral analysis of material composition, thickness tolerance inspection, and surface quality inspection upon arrival. This process prevents non-conforming raw materials from entering the production workflow, and guarantees 100% compliance of all raw materials with customer specifications.
  • IPQC (In-Process Quality Control)
    During production, our QC engineers perform hourly patrol inspections on the dimensions, appearance, and forming quality of stamped parts. Mass production may only commence after the first article has passed full-dimensional inspection and validation. This mechanism allows us to promptly identify and resolve quality fluctuation issues in the manufacturing process.
  • FQC (Final Quality Control)
    Upon completion of production, 100% full inspection is carried out on the critical dimensions, appearance, surface finishing performance, and assembly performance of every finished product, to completely eliminate non-conforming products.
  • OQC (Outgoing Quality Control)
    Prior to shipment, a final inspection covering the full-range performance, packaging, and quantity of the products is conducted in strict accordance with customer drawing specifications and the AQL (Acceptable Quality Limit) international sampling standard. Products are only released for shipment after passing the inspection, to ensure 100% compliance of delivered products with customer requirements.


FAQ


What stainless steel grades do you offer for high precision stainless steel stamping parts?

We mainly provide 303, 304, 316L stainless steel, and optional 17-4 (SUS630) grade for high-strength requirements, and can recommend the most suitable grade according to your application environment.


Can you provide a salt spray test report for your 316L stainless steel machining parts?

Yes, we can conduct salt spray corrosion tests of different durations (48/96/120 hours) according to your needs, and provide a detailed salt spray test report to verify the corrosion resistance of the product.


How to avoid oxidation of 304 stainless steel stamping parts during transportation and storage?

We use professional vacuum anti-oxidation packaging for all stainless steel products, and attach anti-rust oil and desiccant inside the package. We also provide detailed storage and maintenance suggestions to ensure the product surface is not oxidized.


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Dongguan Longwang Hardware Co., Ltd. was established in 2008.

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   elena@lwmetalmachining.com
      jane@lwmetalmachining.com
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