Stainless Steel CNC Machining Services On Aria
Aria advanced CNC technology ensures tight tolerances (±0.005 mm), superior surface finishes, and cost-effective solutions for prototypes and mass production.
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What is Stainless Steel CNC Machining?
Stainless steel is a corrosion-resistant alloy primarily composed of iron (Fe), chromium (Cr) (minimum 10.5%), and other elements like nickel (Ni), molybdenum (Mo), and carbon (C). The chromium forms a passive oxide layer, preventing rust and corrosion.
Stainless steel is a top choice for CNC machining projects, thanks to its exceptional machinability, material consistency, and corrosion resistance.
It is widely used in precision CNC milling and turning for critical applications in aerospace, automotive, and marine industries, where durability and high performance are essential.
Why Choose Our Stainless Steel CNC Machining Services?
Material Expertise
Machining all stainless steel grades (304, 316, 17-4PH, 416, etc.) with optimized tooling and cooling techniques to prevent work hardening.
Multi-Axis Precision
3/4/5-axis CNC mills and lathes for intricate geometries, threads, and tight-tolerance features.
Surface Finish Options
Bead blasting, polishing, anodizing, passivation, or custom coatings to meet functional or aesthetic needs.
Fast Turnaround
Prototypes in 5 days or high-volume production with rigorous quality checks (ISO 9001 certified).
Types of Stainless Steel
Aluminum Subtypes
Tensile Strength, Yield (MPa)
Shear Modulus (GPa)
Elongation at Break (%)
Hardness (Brinell)
Density (g/cm³)
Stainless Steel 15-5
1280
77
10
388
7.80
Stainless Steel 17-4
1379
77.4
7
419
7.80
Stainless Steel 18-8
215
77
70
123
8.00
Stainless Steel 303
240
77.2
50
160
8.00
Stainless Steel 304
215
77
70
123
8.00
Stainless Steel 316
205
74
40
187
8.03
Stainless Steel 416
275
83
30
156
7.80
Stainless Steel 420
345
80.7
25
195
7.80
Stainless Steel 440C
445
83.9
14
223
7.80
Stainless Steel 410
310
73
25
147
7.74
Stainless Steel CNC Machining Parameter
Parameter
Milling
Turning
Notes
Spindle Speed (RPM)
200–800
100–600
Lower for harder grades (e.g., 17-4PH: 150–400 RPM)
Spindle Speed (RPM)
5–15 (medium-duty)
3–10 (general turning)
Depends on machine rigidity
Feed Rate (mm/min)
100–500
50–300
Adjust based on tool diameter
Cutting Depth (mm)
0.5–3 (roughing)
0.5–3 (roughing)
0.5–3 (roughing)
Cutting Width (mm)
30–70% of tool diameter
N/A (turning)
Slotting: ≤50% tool diameter
Machining Accuracy
±0.02–0.05mm
±0.01–0.03mm
Tight tolerance achievable
Surface Roughness (Ra)
0.8–3.2µm
0.4–1.6µm
Finer with polished tools
Tool Type
Carbide end mill (4–6 flutes)
Carbide insert (positive rake)
Coated tools (TiAlN) recommended
Tool Diameter (mm)
6–20 (general)
N/A (insert-based)
Smaller tools for details
Chip Load (mm/tooth)
0.05–0.15
0.1–0.3 (feed/rev)
Harder grades need lower chip load
Ramp Angle (°)
3–10 (helical entry)
N/A (turning)
Reduces tool shock
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