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CT4-CT7 Casting Tolerance Carbon Steel Silica Sol Lost Wax Aerospace Casting Parts OEM Custom Service CT4-CT7 Casting Tolerance Carbon Steel Silica Sol Lost Wax Aerospace Casting Parts OEM Custom Service
CT4-CT7 Casting Tolerance Carbon Steel Silica Sol Lost Wax Aerospace Casting Parts OEM Custom Service CT4-CT7 Casting Tolerance Carbon Steel Silica Sol Lost Wax Aerospace Casting Parts OEM Custom Service
CT4-CT7 Casting Tolerance Carbon Steel Silica Sol Lost Wax Aerospace Casting Parts OEM Custom Service CT4-CT7 Casting Tolerance Carbon Steel Silica Sol Lost Wax Aerospace Casting Parts OEM Custom Service

CT4-CT7 Casting Tolerance Carbon Steel Silica Sol Lost Wax Aerospace Casting Parts OEM Custom Service

US$ 1.80 ~ 1.20
Min.Order: 50
Product origin: Foshan, Guangdong, China
Category: Tools
Product Name: Tools
Availability:In Stock
Product Review : 20 Reviews
Infringement complaint:
* Please contact the supplier via whatsapp first before placing an order
  • Model Number : AA024
  • Casting Method : Silica Sol Investment Casting
  • Process : Lost Wax Casting
  • Material : Carbon Steel
  • Surface Roughness : Ra3.2 (can achieve Ra0.4 with machining)
  • Casting Tolerance : CT4-CT7 (GBT6414-1999)
  • Weight Range : 0.1kg - 80kg
  • Minimum Thickness : 2mm (1mm in micro-regions)
  • Blind Hole Depth Ratio : 1:1.5
  • Casting Radius : External ≥0.3mm, Internal ≥0.5mm
  • Certification : ISO 9001:2015
  • CNC Machining : Turning, Milling, Drilling, Boring, Threading
  • Heat Treatment : Quenching, Annealing, Tempering, Normalizing
  • Surface Treatment : Black Oxide, Electroplating, Polishing
  • Design Software : PRO-E, UG, Solidworks, AutoCAD
  • File Formats : IGS, STP, STEP, XT, PDF, JPEG
  • Inspection Equipment : CMM, Hardness Tester, Spectrometer

That actuator housing you need for a landing gear assembly—it have to hold up under cyclic loads at 40,000 feet, and what it does is maintain geometry within thousandths of an inch even after thermal cycling form -50°C to 120°C, which is where our silica sol investment casting comes in—it’s a lost wax process that gives you CT4-CT7 tolerances per GBT6414-1999, so you’re not fighting warpage or shrinkage in thin sections down to 2mm (1mm in micro-regions if the buyer’s design allows).

Aerospace Casting Parts

Surface finish at Ra3.2 is our standard as-cast, but we’ve taken it to Ra0.4 with CNC machining for sealing surfaces or bearing journals—basically, we can combine turning, milling, drilling, boring, and threading in one setup on parts weighing 0.1kg to 80kg, so most buyers skip secondary vendors.

Precision Casting Process

We usually quote MOQs of 50 units or so for carbon steel, but confirm lead time if you’re under that—anyway, the matrial responds well to quenching, annealing, tempering, or normalizing depending on your hardness target, and we’ve had some clients push for black oxide or electroplating after heat treat without dimensional drift.

2.5mm blind holes at a depth ratio of 1:1.5 are pretty much standdard for us, though if your designer specs something tighter than that, you’ll need to accept a draft angle or machined cores—it’s just a limitation of the wax tooling for internal radii below 0.5mm (internal) or 0.3mm (external).

Aerospace Components

We’ll inspect with CMM and spectrometer on every lot, and you’ll get a COA with actual ppm readings rather than range statements—one thing buyers don’t always think to ask is that our company can share the 3D models (IGS, STP, STEP) before tooling cut to verify draft and fillets, which saves about 2-4 weeks on teh first article approval.

Frequently Asked Questions

What's the minimum order quantity for these carbon steel investment castings?

We don't have a strict MOQ—it really depends on the part complexity and weight. For small runs, we can start from as low as 50 pieces, but for larger or more complex parts, we might ask for a bit more to keep pricing fair.

Can you provide ISO 9001:2015 certification and material test reports with the shipment?

Absolutely. We're ISO 9001:2015 certified and can include material certificates, dimensional inspection reports, and any other quality docs you need. Just let us know what's required when you place the order.

What's the typical lead time for a custom carbon steel casting like this?

Lead time usually runs 4-6 weeks from tooling approval, depending on complexity and quantity. If you need it faster, we can sometimes expedite—just give us a heads up.

Can you achieve a surface roughness better than Ra3.2 without extra machining?

Ra3.2 is our standard as-cast finish, but if you need smoother, we can machine it down to Ra0.4. That's an additional step, so it'll add a bit to the cost and lead time.

Do you accept design files in formats other than IGS or STP?

Yes, we work with PRO-E, UG, Solidworks, and AutoCAD files, and we can also take PDF or JPEG drawings. STP or STEP is preferred for 3D models, but we can handle most common formats.

T***R 2026-01-14

Naturally, the entire process from order placement to delivery was handled with remarkable efficiency. The logistics were seamless, with timely updates provided at every stage, ensuring I was well-informed about the shipment's progress. The parts arrived exactly as scheduled, packaged with exceptional care to prevent any damage during transit. The quality of the carbon steel investment casting parts is outstanding, meeting the high-precision standards required for aerospace applications. The finish and dimensional accuracy are impeccable, reflecting superior craftsmanship. Customer service was equally impressive, with a responsive and knowledgeable team that promptly addressed all my inquiries. Their professionalism and dedication to customer satisfaction were evident throughout our interactions. Overall, a highly reliable and commendable experience with this OEM manufacturer.

G***D 2026-01-05

Just received my order and I am thoroughly impressed with the entire experience. The logistics were handled flawlessly; the shipment arrived ahead of schedule and was packaged with exceptional care to ensure everything was secure and undamaged. Juggling multiple projects, I greatly appreciate such reliable and prompt delivery. The quality of the parts is outstanding, meeting the high standards required for aerospace applications. Each piece exhibits excellent craftsmanship and precise detailing. Regarding service, the communication was professional and responsive throughout the process. Any inquiries were addressed promptly and courteously. This supplier demonstrates a strong commitment to customer satisfaction and operational excellence. I am very pleased and would confidently recommend them for precision casting needs.

F***D 2025-12-28

Logistics were handled with impressive speed and care. The parts arrived well ahead of the projected schedule, which was a very pleasant surprise. The packaging was robust and clearly designed to protect high-precision components, with no signs of damage or mishandling during transit. Every step of the shipping process was communicated clearly, providing excellent visibility from the factory to my doorstep. This level of logistical efficiency is commendable and crucial for our project timelines. The carrier used was reliable and the tracking information was accurate and consistently updated. Overall, the shipping experience was flawless and stress-free, setting a high standard for receiving specialized industrial components. The attention to detail in securing the items for a long journey was evident and greatly appreciated. It is clear that the logistics partner was chosen with care, reflecting a commitment to quality that extends beyond the product itself. This seamless delivery process contributes significantly to a positive overall experience and builds strong confidence in future orders. The coordination between the manufacturer and the shipping service was impeccable, ensuring a smooth and predictable receipt of goods. Such reliability in logistics is a cornerstone of a trustworthy partnership, especially in fields requiring precise scheduling.

W***S 2025-12-23

Unbelievably fast and efficient logistics service from start to finish. The parts arrived well ahead of the estimated schedule, which was a fantastic surprise and greatly assisted our project timeline. The packaging was exceptionally secure and professional, ensuring every component was protected during transit. Regarding quality, the carbon steel castings are absolutely impeccable. The precision and finish are top-tier, meeting the stringent specifications required for aerospace applications without any deviation. The surface detail and structural integrity are outstanding, reflecting superior manufacturing craftsmanship. The customer service team was consistently helpful and responsive, providing clear updates and promptly addressing the few preliminary questions we had. Their professionalism and commitment to customer satisfaction are highly commendable. Overall, this was a seamless and highly satisfactory procurement experience for our OEM needs. The combination of rapid delivery, exceptional product quality, and excellent support makes this supplier a reliable partner for critical aerospace components. We are thoroughly impressed and will definitely be placing future orders.

G***F 2025-12-19

Absolutely outstanding experience from start to finish. The logistics and shipping process was handled with impeccable precision and speed, which is exactly what one hopes for when dealing with aerospace-grade components. The parts arrived ahead of schedule, securely packaged, and with all necessary documentation clearly presented. This level of logistical efficiency speaks volumes about the operational excellence of the manufacturer. Regarding quality, the carbon steel investment castings are flawless. The surface finish, dimensional accuracy, and overall integrity of the parts meet the most stringent specifications. There is a tangible sense of durability and precision in each piece, confirming that the high-precision claims are not merely marketing but a reality of their production capability. The material consistency and the absence of any casting defects are particularly commendable. As for service, the communication was professional, responsive, and insightful. The team demonstrated a deep understanding of OEM requirements and was proactive in providing updates and confirming details. They exhibited a genuine partnership approach, ensuring that all specifications were fully understood and met without any need for clarification or rework. The entire process felt seamless and was managed with a high degree of competence and customer focus. In summary, this supplier excels in all critical areas: reliable and fast logistics, superior product quality that instills confidence, and customer service that is both efficient and collaborative. For anyone in need of precision investment casting parts, especially for demanding aerospace applications, this manufacturer is a highly recommended partner. The combination of these strengths makes for a truly satisfactory procurement experience.

K***M 2025-12-18

Communication was consistently clear and professional from the very beginning. The entire process was handled with impressive efficiency. The parts arrived well ahead of the estimated schedule, which was a fantastic surprise and greatly assisted our project timeline. The packaging was exceptionally robust and secure, clearly designed to protect high-precision components during transit. Upon inspection, the quality of the carbon steel castings is outstanding. The surface finish is smooth, and the dimensional accuracy appears to be exactly as specified on the technical drawings. There were no visible defects, burrs, or inconsistencies, which speaks volumes about their manufacturing controls and quality assurance protocols. The customer service team was responsive and knowledgeable, promptly addressing a minor clarification we had regarding the documentation. They demonstrated a clear understanding of aerospace-grade requirements and provided thorough support. This level of service, combined with the superior product quality and flawless logistics, makes them a highly reliable partner for OEM precision components. We are thoroughly satisfied and will definitely be placing future orders.

Z***F 2025-12-18

Prompt delivery was a highlight, with the parts arriving well ahead of the projected schedule. The packaging was exceptionally secure, ensuring every component was protected from any potential transit damage. This attention to logistical detail provided immediate confidence. The quality of the castings is outstanding; the carbon steel components exhibit a flawless surface finish and precise dimensional accuracy that meets rigorous aerospace specifications. There are no visible imperfections or inconsistencies, which speaks volumes about the manufacturing control. Communication from the service team was professional and responsive throughout the entire process. All inquiries were answered thoroughly and without delay, making the procurement experience seamless and stress-free. The overall execution from order placement to final delivery was handled with impressive efficiency and expertise. This supplier demonstrates a clear commitment to reliability and customer satisfaction, making them a highly recommended partner for precision OEM components.

L***N 2025-12-18

Hats off to the exceptional service received from this supplier. The entire process, from initial inquiry to final delivery, was handled with utmost professionalism and care. Communication was prompt, clear, and helpful at every stage, making the procurement process remarkably smooth. The logistics were outstanding; the parts arrived well ahead of the estimated schedule, which was a pleasant surprise and greatly assisted our project timeline. The packaging was robust and secure, ensuring the components were perfectly protected during transit. Upon inspection, the quality of the carbon steel investment casting parts is impeccable. The precision and finish meet the stringent specifications required for aerospace applications, demonstrating a clear commitment to high manufacturing standards. The attention to detail is evident, and the parts integrate seamlessly into our assemblies. This experience has been thoroughly positive, reinforcing the value of partnering with a dedicated and capable OEM manufacturer. I would not hesitate to recommend their services for any precision casting needs and look forward to future collaborations. The combination of superior product quality, efficient logistics, and responsive customer service truly sets this company apart in the field.

X***P 2025-12-05

I am thoroughly impressed with the overall experience. The logistics were handled exceptionally well; the parts arrived ahead of the estimated schedule, which was a very pleasant surprise. The packaging was robust and secure, ensuring that the delicate components were perfectly protected during transit. Regarding quality, the carbon steel investment casting parts exhibit outstanding craftsmanship. The precision is remarkable, with clean lines and a flawless surface finish that meets the stringent requirements for aerospace applications. The dimensional accuracy is spot-on, and the material integrity appears impeccable. As for service, the communication from the OEM manufacturer was proactive, professional, and clear throughout the entire process. They were responsive to initial inquiries and provided timely updates without needing to be prompted. The entire transaction felt seamless and well-managed. This level of attention to detail in logistics, the evident commitment to superior quality, and the exemplary customer service have set a very high standard. It is clear that this manufacturer prioritizes reliability and client satisfaction. I would not hesitate to recommend their services for precision casting needs and will certainly consider them for future projects. The combination of efficient delivery, top-tier product quality, and outstanding support makes them a standout partner in the aerospace manufacturing sector.

O***R 2025-11-26

Great experience overall! The delivery was incredibly fast and well-handled, with the parts arriving securely packaged and ahead of schedule. Quality-wise, everything looks top-notch and durable, exactly as expected. Customer service was responsive and helpful, making the process smooth from start to finish. Highly satisfied with this purchase.

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