Stainless Steel Machining Calculator
Calculate optimal CNC machining parameters for stainless steel grades (304, 316, 321, 430, duplex) with work hardening prevention, tool selection, and coolant recommendations for South African manufacturing.
Company Information
Stainless Steel Grade & Properties
Tool Selection & Operation
High-temperature resistance, best for stainless
Maximum material removal (avoid work hardening)
Recommended: ≤ 1× diameter for stainless
Width of cut
Required for stainless - high volume flood coolant
Machine Specifications
Stainless requires rigid machines
Lower RPM typical for stainless
📊 Stainless Steel Grades Quick Reference
| Grade | Family | Hardness | Machinability | Speed (m/min) | Work Hardening |
|---|---|---|---|---|---|
| 304 Austenitic (18/8) | Austenitic | 180 HB | 45% | 60 | Very High |
| 316 Austenitic (Marine) | Austenitic | 190 HB | 40% | 55 | Very High |
| 321 Austenitic (Stabilized) | Austenitic | 185 HB | 42% | 58 | Very High |
| 410 Martensitic | Martensitic | 200 HB | 55% | 70 | Moderate |
| 420 Martensitic (High Carbon) | Martensitic | 220 HB | 50% | 65 | Moderate |
| 430 Ferritic | Ferritic | 170 HB | 65% | 90 | Low |
| 2205 Duplex (Super Duplex) | Duplex | 290 HB | 35% | 50 | High |
| 17-4 PH (Precipitation Hardening) | Precipitation Hardening | 350 HB | 30% | 40 | High |
Related CNC Machining Calculators
Optimize your machining operations with these complementary calculators:
Aluminum Machining
Optimized parameters for aluminum alloys
Feeds & Speeds (General)
Multi-material machining calculator
Chip Load Calculator
Prevent work hardening with proper chip load
MRR Calculator
Material removal rate optimization
RPM & Cutting Speed
Convert between RPM and surface speed
View All Calculators
Browse 20+ manufacturing calculators