ForceBeyond is a premier global provider of precision CNC machining services for stainless steel components. Offering an optimal balance of corrosion resistance, mechanical strength, and aesthetic appeal, stainless steel is the material of choice across the medical, food processing, fluid control, and aerospace industries.
Utilizing advanced 5-axis CNC mills, multi-tasking lathes, and Swiss-style turning centers, ForceBeyond machines all major series of stainless steel—including austenitic (304/316), martensitic (410/440C), and precipitation-hardening (17-4 PH) alloys. Through specialized tooling geometries, rigid workholding, and automated chemical passivation, we deliver fully finished, ultra-tight tolerance stainless steel parts ready for immediate assembly.
ForceBeyond routinely machines bar stock, plate, forgings, and investment castings across the entire stainless steel family. We tailor our speeds, feeds, and coolant delivery to match the specific ductility and work-hardening characteristics of each alloy group.
| Alloy Series | Common Grades | Typical Yield Strength | Key Features & Optimal Applications |
|---|---|---|---|
| Austenitic (300 Series) | 304, 304L, 316, 316L | 30,000 – 35,000 psi | Superior general corrosion resistance. Highly ductile but prone to gummy chips and work-hardening. Widely used for food/dairy equipment, medical housings, and marine hardware. |
| Precipitation-Hardening | 17-4 PH, 15-5 PH | 100,000 – 185,000 psi (Post-Heat) | Exceptional combination of high strength, hardness, and 304-level corrosion resistance. Machined in Condition A and aged to H900 or H1150 for aerospace and pump shafts. |
| Martensitic (400 Series) | 410, 416, 420, 440C | 40,000 – 100,000+ psi | High carbon content allows heat treatment to extreme hardness levels. Highly machinable (especially 416). Used for surgical cutlery, valve stems, and wear-resistant shafts. |
| Ferritic (400 Series) | 430, 409 | 35,000 – 45,000 psi | Non-heat-treatable, magnetic stainless with good oxidation resistance. Machined extensively for automotive exhaust components and trim. |
(Note: For harsh subsea, chemical, or chloride environments requiring extreme resistance to stress corrosion cracking, explore our dedicated Duplex & Super Duplex Stainless Steel Machining capabilities).
While stainless steel is widely used, machining it requires strict technical discipline to prevent poor surface finishes, rapid tool wear, and dimensional distortion.
Machining complex, organic shapes (like valve bodies, pump impellers, or sanitary fittings) from a solid block of 316L stainless steel generates massive material waste and high tool costs. ForceBeyond operates on a Tier-1.5 Manufacturing Model:
This integrated approach cuts total unit production costs by up to 60% compared to machining from solid bar stock.
ForceBeyond provides complete, end-to-end processing for all stainless steel components:
Our advanced machining centers supply precision stainless steel components to:
AISI 416 is widely considered the easiest stainless steel to machine. It is a free-machining martensitic grade with added sulfur, allowing for high cutting speeds, short broken chips, and long tool life. However, if high corrosion resistance is required, 304 and 316 are preferred despite being more difficult to machine.
During cutting, grinding, or milling, microscopic particles of free iron from the CNC machine's steel cutting tools can become pressed into the surface of the stainless steel part. If left untreated, these free iron particles will rust when exposed to moisture. Passivation dissolves this free iron and allows the stainless steel to reform its natural, invisible, corrosion-resistant chromium-oxide skin.
Yes. We typically perform rough machining on 17-4 PH in Condition A (solution annealed), which is softer and easier on cutting tools. We then perform the required thermal age-hardening process (such as H900 or H1150) in-house, followed by a final, high-precision finish machining pass to hit exact print tolerances without worrying about heat-treat distortion.
