Metal Bending Services
XC Machining provides CNC press brake metal bending for steel, stainless steel, aluminum, copper, brass, and titanium sheet from 0.5 mm to 12 mm thickness. Angular accuracy: ±0.1°. Bend radius: 1× material thickness standard. Up to 250 tons × 3200 mm working length.
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What Metal Bending Capabilities Does XC Machining Offer?
XC Machining operates CNC press brakes with up to 250-ton clamping force and 3200 mm working length, producing V-bends, U-bends, Z-bends, hems, offset bends, and channel forms with ±0.1° angular accuracy and ±0.4 mm positional tolerance on flange lengths.
Multi-axis CNC back gauges position material for each bend with ±0.1 mm repeatability. Our press brakes perform up to 12 sequential bends in a single part without re-fixturing, producing complex enclosures, brackets, and channels from a single flat blank.
Upload your STEP file or 2D drawing with bend callouts. Our engineers calculate K-factor, bend deductions, and flat pattern layout — DFM feedback within 12 hours.
How Does XC Machining Achieve High-Precision Metal Bending?
XC Machining compensates for material springback using CNC-controlled overbend angles calibrated per material type and thickness. Aluminum 5052 springs back 1–3° while stainless 304 springs back 3–5° — our press brake controller adjusts automatically.
Why Choose XC Machining for Metal Bending?
XC Machining CNC press brake bending provides ±0.1° angular accuracy on steel, stainless, aluminum, copper, brass, and titanium from 0.5–12 mm thickness. Integrated with laser cutting, welding, and finishing — all in-house at our ISO 9001:2015 certified Dongguan facility.
Up to 250 tons × 3200 mm working length. CNC back gauge with ±0.1 mm positioning. Up to 12 bends per part. V-dies, U-dies, gooseneck tools, and hemming tools available.
Steel A36/1018 (0.5–12 mm), stainless 304/316/430 (0.5–6 mm), aluminum 5052/6061 (0.5–10 mm), copper C110 (0.5–3 mm), brass C260/C360 (0.5–3 mm), spring steel 1095/1075 (0.5–2 mm), titanium Grade 2 (0.5–4 mm).
Engineers check minimum bend radius (1× thickness standard), minimum flange length (≥ 2× thickness + bend radius), hole-to-bend distance (≥ 2× thickness to prevent deformation), cumulative tolerance for multi-bend parts, and springback compensation per material. DFM within 12 hours.
Deburring, powder coating (60–120 μm), anodizing (Type II/III), zinc plating (5–25 μm), brushing (Ra 0.4–0.8 μm), painting (RAL/Pantone), and electropolishing for stainless steel bent parts.
Metal Bending Tolerances
| Bend Angle Tolerance | ±1° to ±2° | Depends on material elasticity and tooling precision. |
|---|---|---|
| Bend Radius Tolerance | ±0.25 mm (±0.010″) | Actual bend radius may differ slightly from design due to springback. |
| Bend Position (Flange Length) | ±0.4 mm to ±0.8 mm (±0.016″ to ±0.032″) | Tighter tolerance needs CNC-controlled press brakes. |
| Flat Pattern Accuracy | ±0.25 mm to ±0.5 mm (±0.010″ to ±0.020″) | For initial laser/punch cut before bending. |
| Bend-to-Hole Distance | ±0.5 mm (±0.020″) | Holes near bends may deform without proper allowance. |
| Hole Deformation Near Bend | Keep hole edge ≥ 2x material thickness from bend | Prevents ovaling or distortion. |
| Material Springback | Varies by material | Softer metals like aluminum spring back less than stainless steel. |
| Minimum Flange Length | ≥ 2x material thickness | Shorter flanges may not bend properly or crack. |
| Cumulative Tolerance (Multiple Bends) | ±0.8 mm to ±1.5 mm total | Important for folded enclosures or box-like geometries. |
Surface Finishes For Metal Bending
After metal bending, surface finishing plays a crucial role in enhancing both the appearance and functionality of the final part. Here are commonly used surface finishes for bent metal components:
As-bent surface with visible tool marks at Ra 3.2–6.3 μm. Suitable for internal structural parts not requiring cosmetic appearance.
Removes sharp edges from bend lines to Ra 1.6–3.2 μm for safe handling and assembly fit. Standard on all production orders.
Directional satin grain at Ra 0.4–0.8 μm on aluminum and stainless bent parts. Masks bend marks for decorative enclosures and panels.
60–120 μm polymer layer over bent parts. RAL/Pantone color matching. 500–1,000 hr salt spray. UV-resistant.
Removes 5–15 μm from stainless bent parts for Ra 0.2–0.4 μm smooth finish with enhanced corrosion resistance.
Type II/III anodizing on aluminum bent parts. 5–80 μm oxide layer with custom color options. Preserves bent geometry.
Surface Finishes For Metal Bending
After metal bending, surface finishing plays a crucial role in enhancing both the appearance and functionality of the final part. Here are commonly used surface finishes for bent metal components:
Sand blasting creates a uniform matte texture on CNC milled parts, reducing visible tool marks and preparing surfaces for additional coatings.
Brushing produces a consistent directional grain on accessible metal surfaces, enhancing the appearance of CNC milled housings, panels, and brackets.
Anodizing forms a protective oxide layer on CNC milled aluminum parts, improving corrosion resistance and providing a range of decorative color options.
Powder coating adds a durable protective finish to suitable CNC milled metal components, offering customizable colors and environmental protection.
Polishing smooths accessible surfaces of CNC milled metal parts, reducing surface roughness and creating a refined satin or reflective appearance.
Electroplating deposits nickel, chrome, zinc, or gold layers onto CNC parts for corrosion resistance, conductivity, and hardened wear surfaces.
Electroplating deposits nickel, chrome, zinc, or gold layers onto CNC parts for corrosion resistance, conductivity, and hardened wear surfaces.
Electroplating deposits nickel, chrome, zinc, or gold layers onto CNC parts for corrosion resistance, conductivity, and hardened wear surfaces.
Our Metal Bending Prototype Manufacturing Capabilities
Provides injection molding for prototypes and custom parts, emphasizing expert support, competitive pricing, and faster production cycles.
Get reliable vacuum casting services for high-quality prototypes and production parts at competitive prices. XinCheng offers highly detailed casting parts with consistent quality.
Uses cutting, bending, and forming techniques to produce precision metal components suited for industrial, commercial, and manufacturing applications.
Specialist Industries
What Materials Are Available for CNC Milling?
XC Machining offers precision CNC milling services for a wide range of metals, including aluminum, copper, bronze, and steel. Each material is selected for its strength, machinability, corrosion resistance, and application requirements. Our CNC milling capabilities support the production of complex components, precision brackets, housings, and custom industrial parts.
Aluminum is lightweight, corrosion-resistant, and easy to machine, making it ideal for CNC milled housings, brackets, enclosures, and precision components. Its excellent strength-to-weight ratio makes it suitable for aerospace, automotive, and industrial applications.
Carbon steel offers excellent strength, toughness, and durability for CNC milled machine parts, mounting brackets, tooling, and structural components. Its cost-effectiveness and mechanical performance make it suitable for automotive and industrial applications.
Stainless steel provides excellent corrosion resistance, strength, and durability for CNC milled components. It is widely used for medical equipment parts, food processing machinery, marine fittings, and precision industrial components.
Brass offers excellent machinability, corrosion resistance, and good electrical conductivity. It is commonly used for CNC milled valve bodies, electrical connectors, mounting plates, precision fittings, and decorative mechanical components.
Brass offers excellent machinability, corrosion resistance, and good electrical conductivity. It is commonly used for CNC milled valve bodies, electrical connectors, mounting plates, precision fittings, and decorative mechanical components.
Copper provides outstanding electrical and thermal conductivity, making it ideal for CNC milled heat sinks, busbars, electrical contacts, and conductive plates. Its thermal performance supports reliable operation in electrical and industrial applications.
Materials for Metal Bending Parts
5052, 6061, 3003
304, 316, 430
A36, 1018, 102
G90, G60
1095, 1075
C110, C122
C260, C360
Grade 2, Grade 5 (Ti-6Al-4V)
Specialist industries
XC Machining is a trusted partner for industries demanding complexity, reliability and precision. Our expensive experience in producing millions of high quality components brings unmatched expertise to every project.
Our services cover a diverse range of applications to ensure that we meet the unique needs of each sector with great care.
Automotive Industry
XC Machining supports the automotive industry with cutting-edge CNC machining solutions, enabling the production of complex parts that drive efficiency
Semi Conductor
For the semiconductor industry, XC Machining offers CNC machining services that meet the high precision demands necessary for manufacturing components
Energy Industry
Our CNC machining services are pivotal in the energy sector, where precision and durability are essential. XC Machining supports the
Industrial Machinery
XC Machining is a trusted partner in the industrial machinery sector, offering CNC machining solutions that ensure the robust and
Electronics
XC Machining delivers precision machining solutions for the electronics industry, producing intricate components that meet the exacting standards required for
Communications
XC Machining offers specialized CNC machining services for the communications industry, crafting precision parts that are vital for the infrastructure
Bring Your Designs to Life with XC Machining
Experience precision engineering with XC Machining. From detailed prototypes to high-volume production, we’re here to turn your concepts into reality. Contact us today to discuss your project needs!
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Frequently Asked Questions
What Is CNC Press Brake Metal Bending?
CNC press brake bending clamps sheet metal between a V-die (bottom) and punch (top) to form precise angles. XC Machining press brakes apply up to 250 tons of force over 3200 mm working length with CNC-controlled back gauge positioning at ±0.1 mm for repeatable bend locations across production runs.
What Materials Can Be CNC Bent at XC Machining?
Steel A36/1018 (0.5–12 mm), stainless 304/316/430 (0.5–6 mm), aluminum 5052/6061/3003 (0.5–10 mm), copper C110 (0.5–3 mm), brass C260/C360 (0.5–3 mm), spring steel 1095 (0.5–2 mm), titanium Grade 2 (0.5–4 mm). Minimum bend radius: 1× material thickness. Minimum flange: 2× thickness + bend radius.
What Are the Limitations of Metal Bending?
Limitations: materials thicker than 12 mm require heavy press brakes; hardened spring steels may crack at tight radii (minimum 2× thickness for spring steel); cumulative tolerance increases with number of bends (±0.8–1.5 mm for 4+ bends); and hole-to-bend distance must be ≥2× thickness to prevent hole deformation.
What Is Springback in Metal Bending and How Is It Compensated?
Springback is elastic recovery after bending — the metal partially returns toward its original flat shape. Aluminum 5052 springs back 1–3°, stainless 304 springs back 3–5°, mild steel springs back 0.5–2°. XC Machining CNC press brakes compensate automatically by overbending to the calculated angle based on material type, thickness, and bend radius.
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