Product Overview

Our Custom CNC SS440C Stainless Steel Components are manufactured for demanding applications requiring high hardness, wear resistance, and precision geometry.
This precision-machined component combines CNC milling, heat treatment, polishing, and electroplating processes to achieve reliable mechanical performance and enhanced surface durability.
The unique curved structure and mounting shaft design make it suitable for customized industrial assemblies, mechanical systems, and specialized equipment.

Product Specification

Specification Item	Details
Product Name	Custom CNC SS440C Stainless Steel Mechanical Hook Parts
Material	SS440C Stainless Steel
Material Type	High Carbon Martensitic Stainless Steel
Manufacturing Process	CNC Milling, Precision Machining, Polishing, Heat Treatment
Secondary Process	Electroplating, Surface Finishing
Heat Treatment	Hardening & Tempering Available
Hardness After Heat Treatment	Approx. 58-60 HRC
Surface Finish	Mirror Polishing / Fine Polishing
Surface Treatment	Electroplating, Passivation, Custom Coating
Standard Tolerance	±0.01mm Available According To Design
Surface Roughness	Ra 0.8-3.2μm Depending On Requirement
Production Method	Prototype, Low Volume, Batch Production
Drawing Format	STEP, STP, IGES, DWG, DXF, PDF
Inspection Equipment	CMM, Micrometer, Height Gauge, Hardness Tester
Customization	OEM Drawing And Sample Based Manufacturing
Application	Machinery, Automation Equipment, Precision Mechanisms

Manufacturing Process

1. CNC Milling

Precision CNC milling creates:
● Complex curved profiles
● Mounting features
● Functional surfaces
● Accurate mechanical geometry

2. Heat Treatment

Heat treatment improves:
● Hardness
● Wear resistance
● Mechanical stability
SS440C is widely selected where high hardness and wear resistance are required after heat treatment.

3. Surface Polishing

Precision polishing provides:
● Smooth surface appearance
● Reduced friction
● Improved corrosion resistance
● Premium visual finish

4. Electroplating

Electroplating options improve:
● Surface protection
● Appearance
● Functional durability
Common finishing options for stainless steel CNC components include polishing, passivation, electroplating, and other protective coatings.

 

Material Advantage

Why Choose SS440C Stainless Steel?

High Wear Resistance

Suitable for components exposed to:
● Mechanical friction
● Repeated contact
● High load operation

High Hardness

After heat treatment:
● Excellent deformation resistance
● Longer service life
● Stable mechanical performance

Good Polishing Performance

Suitable for:
● Mirror finish components
● Precision visible parts
● High-end mechanical assemblies

 

Surface Treatment Options

Available finishes:

Mirror Polishing

Benefits:
● Premium appearance
● Smooth contact surface
● Reduced friction

Electroplating

Benefits:
● Enhanced surface protection
● Improved appearance
● Additional functional coating

Other Options

● Passivation
● Brushing
● Grinding
● Custom coating

Quality Control

Each SS440C component can be inspected through:
Dimensional Inspection
Including:
● Critical dimension verification
● Profile measurement
● Assembly checking

Material Verification

Including:
● Material certificate
● Hardness testing
● Process confirmation

Final Inspection

Including:
● Surface quality inspection
● Appearance inspection
● Functional verification

Application Areas

Industrial Equipmen

Used for:
● Mechanical assemblies
● Precision mechanisms
● Customized machines

Automation Systems

Used for:
● Motion components
● Fixtures
● Robotic equipmen

High Wear Application

Used for:
● Contact parts
● Lever mechanisms
● Precision moving components

OEM Manufacturing

Suitable for:
● Custom replacement parts
● Engineering prototypes
● Specialized equipment

Buyer Benefits

Why Choose Custom CNC SS440C Components?

✔ High hardness after heat treatment
✔ Excellent wear resistance
✔ Precision CNC machining capability
✔ Premium polished surface finish
✔ Suitable for customized OEM projects
✔ Stable performance in demanding environments

4. About Us

 

5. Processing Material

 

6. Application

 

7. POSITIVE FEEDBACK

 

 

8.FAQ

1. Are you a manufacturer or a trading company?

We are a factory located in Shenzhen, China, with 20 years of rich experience, covering 6000 square meters. Complete facilities, including 3D quality inspection equipment, ERP system and 40 machines. If necessary, we can provide you with material certificates, sample quality inspection and other reports.

 

2. How to get a quote?

Detailed drawings (PDF/STEP/IGS/DWG...), including quality, delivery date, materials, quality, quantity, surface treatment and other information.

 

3. Can I get a quotation without drawings? Can your engineering team draw for my creativity?

Of course, we are also glad to receive your samples, pictures or detailed size drafts for accurate quotation.

 

4. Can you provide samples before mass production?

Of course, the sample fee is necessary. If possible, it will be returned during mass production.

5. What is the delivery date?

Generally, the sample lasts for 1-2 weeks and the batch production lasts for 3-4 weeks.

 

6. How do you control quality?

(1) Material Inspection - Check material surfaces and approximate dimensions.

(2) First inspection of production - ensure critical dimensions in mass production.

(3) Sampling inspection - check the quality before delivery to the warehouse.

(4) Preshipment inspection - 100% inspection by QC assistant before shipment.

 

7. After sales service team

If you have any problems after receiving the product, you can provide feedback through voice call, video conference, email, etc. within one month. Our team will provide you with solutions within a week.