420 Stainless Steel CNC Machined Blades
Stainless steel CNC machining delivers high-strength, wear-resistant, and corrosion-resistant parts for critical applications. It is widely used in industries requiring long-term durability and precision performance.
2.Materials & Process
We work with SS304, SS316, SS303, SS420, and SS17-4PH using CNC milling, turning, and multi-axis machining. Secondary operations include drilling, threading, and surface finishing. Carbide tools ensure stable machining.
3.Quality Control
Strict inspection ensures dimensional accuracy and surface integrity. Final evaluation confirms compliance with quality and performance requirements.
Precision-Engineered Blades for Industrial Cutting Applications
Sharp, durable, and corrosion-resistant, 420 Stainless Steel CNC Machined Blades cut well. Precision CNC machining for global enterprises is our specialisation since 2008. Our technical staff works with you and has 15+ years of expertise. From development to mass manufacturing, we provide complex blade designs with HRC 50-58 hardness and ±0.01 mm tolerances. Sample manufacturing takes 7 days or 3 days for simpler designs. Every blade is 100% critical dimension verified for cutting edge quality.
Why Choose 420 Stainless Steel for Your Blade Applications?
Hardness and edge retention are better with 420 stainless steel.
This grade cuts well after heat treatment. Used continuously, it resists corrosion and retains sharp edges.
Hardening 420 makes it wear-resistant beyond softer stainless grades. It helps industrial knives, food processors, and precision cutters.
CNC mills material cleanly. We can create complex blade profiles with dimensional accuracy.
The blade stays sharp and operates effectively in harsh situations.
Technical Specifications
| Parameter | Specification |
|---|---|
| Material | 420 Stainless Steel (AISI 420 / 1.4021) |
| Process | CNC Milling, CNC Turning, Grinding, Polishing, Laser Cutting |
| Hardness | HRC 50–58 (after heat treatment, customizable) |
| Tolerance | General: ±0.05 mm / Precision: ±0.02 mm / Critical edges: ±0.01 mm |
| Surface Roughness | Ra 0.8 μm standard / Ra 0.4 μm for high-precision edges |
| Surface Finish | Polished, brushed, passivated, bead blasting, mirror finish |
| Edge Thickness | ≥0.3 mm (design-dependent) |
| Size Range | Customized per drawings (typical length: 10–500 mm) |
| Heat Treatment | Tempering and quenching available |
| Inspection | 100% dimensional inspection with micrometer, optical projector, hardness tester |
| Applications | Cutting blades, industrial knives, food processing knives, surgical instruments |
Our Manufacturing Capabilities
Advanced CNC and carbide tooling machine, 420 Stainless Steel CNC Machined Blades.
Our multi-axis machining centers precisely machine complicated blade designs. Grinding and polishing improve edge sharpness and finish.
Your target hardness is achieved by controlled heat treatment. We can temper and quench items to HRC 50–58 or to your specifications.
Secondary processes include drilling, threading, and custom edge profiles. We customise our method to your drawings for straight, curved, or serrated blades.
Our engineers review your design before production. We recommend edge angles, thickness, and material treatment to improve blade performance and manufacturability.
Quality Control & Inspection
Each blade is carefully inspected before delivery.
We check key dimensions using micrometres and optical projectors. Heat treatment is confirmed by hardness testing. We assess surface roughness to assure cutting performance.
Material certifications are available upon request. We ensure your blades fulfil FDA food-contact guidelines.
If quality issues develop within a month after delivery, we remanufacture within a week and reimburse shipping.
Key Advantages of Our Blade Manufacturing
Engineering-Driven Approach
You communicate directly with our engineers. We review your drawings, optimize blade geometry, and suggest the best material treatment for your application.
Fast Turnaround
Sample blades are typically ready within 7 days. Simple designs can be completed in just 3 days.
100% Customization
We don't sell standard products. Every blade is manufactured according to your specifications—OEM and ODM supported.
Flexible Production Scale
We provide the same attention to 10 prototypes or 10,000 manufacturing units.
Global Shipping
We offer fast door-to-door delivery, even for small-batch orders. Duties and shipping can be arranged together for your convenience.
Common Applications
Our precision-machined blades serve various industries:
- Industrial cutting tools – for manufacturing and processing
- Food processing knives – FDA-compliant for hygiene-critical environments
- Surgical instruments – precision edges for medical applications
- Shaving and grooming blades – consistent sharpness and smooth finish
- Paper and textile cutting – long-lasting performance under repetitive use
FAQ
Q: Why are blades made of 420 stainless steel?
Cutting tools and blades use high-hardness heat-treated 420 stainless steel.
Q: How hard is 420 stainless steel?
Hardening with heat treatment improves wear resistance and cutting.
Q: Where are 420 stainless steel blades used?
Industrial blades, cutting tools, and precision components are popular applications.
Q: Can 420-part heat treatment work?
Hardness and mechanical properties can be heated.
Contact Us
Starting your blade project with 420 Stainless Steel CNC Machined Blades? Email bill@bldmachining.com for a timely quote and technical guidance from our engineering staff.
