Precision Machining
- CNC Machining Service
- CNC Milling
- CNC Turning
- Automatic Turning
- Machining Screw/Rivet
- Wire EDM Machining
- Casting & CNC
- Aluminum Profile & CNC
- Cold Heading & CNC
Chromium-alloyed steel resisting rust, acids, and heat scaling (>10.5% Cr essential).
Critical for sterile/aggressive environments: medical tools, marine hardware, chemical reactors.
Subtypes | Yield Strength | Elongation at Break | Hardness(Typical) | Maximum | Temp |
---|---|---|---|---|---|
SS304 | 31,000 psi ≥205MPa | ≥40% | Rockwell B70-90 | 7.93 g/cm², 0.286 lb/in³ | 1,600°F |
SS316 | 30,000 psi ≥205MPa | ≥40% | Rockwell B79-95 | 7.98 g/cm², 0.288 lb/in³ | 1,600°F |
SS430 | 45,000 psi ≥310MPa | ≥20% | Rockwell B75-88 | 7.70 g/cm², 0.278 lb/in³ | 1,500°F |
SS410 | 60,000 psi | 20% | Rockwell C22-28 | 7.75 g/cm², 0.280 lb/in³ | 1,200°F |
Duplex 2205 | 65,000 psi | 25% | Rockwell C28-32 | 7.80 g/cm², 0.282 lb/in³ | 600°F |
Austenitic grades (304, 316) achieve tensile strength of 515 MPa with 40% elongation, enabling complex forming without fracture.
Martensitic grades (410, 420, 440C) reach 58-60 HRC post-heat treatment for high-wear components like bearings and cutting tools.
Corrosion Resistance Mechanism
Chromium (≥10.5%) forms a self-healing Cr₂O₃ oxide layer, resisting chemical/atmospheric corrosion critical for medical, marine, and chemical processing equipment.
Molybdenum addition in 316/L enhances pitting resistance in chloride-rich environments.
Thermal Stability
Maintains structural integrity up to 750°C (austenitic) with low thermal expansion (17.5 µm/m·°C for 316), minimizing dimensional drift during machinin
Passivation: Nitric acid bath removes iron contaminants, restoring Cr₂O₃ layer.
Electropolishing: Achieves Ra 0.1 µm mirror finishes while enhancing corrosion resistance.
Shot Peening: Induces compressive stresses to improve fatigue life in aerospace components.
PVD Coatings: TiN/AlCrN for wear resistance in high-friction applications (e.g., valve seats
Medical: 17-4PH surgical tools (CNC-turned + electropolished) for biocompatibility
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Aerospace: 15-5PH landing gear parts machined via 5-axis milling with ±0.005mm tolerance
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Automotive: 304L fuel rails (deep-drawn + laser-welded) leveraging formability
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Energy: Inconel 625 turbine blades (slow EDM + abrasive flow machining)
On December 12 , 2019,LML welcomed three customers again.
Read more about quality assuranceOn December 12 , 2019,LML welcomed three customers again.
Read more about quality assuranceOn December 12 , 2019,LML welcomed three customers again.
Read more about quality assuranceTake advantage of our network and see what Xometry can do for you