Custom Stainless Steel Parts
eMachineShop has machined stainless steel parts for over 15 years. You can design and order your parts with our free CAD software or upload your own CAD file for a fast quote.
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Stainless Steel
is a steel alloy which contains a minimum of 10% chromium. The additional chromium provides a pristine surface finish and exceptional corrosion resistance not found in carbon steels.Properties
- High strength
- Self-protective
- Excellent heat resistance
- Excellent corrosion resistance
- Excellent impact resistance
- Typically doesn’t require surface finishing
Applications
- Home appliances
- Hand tools
- Storage containers
- Pressure tanks
- Automotive parts
Types of Stainless Steel
- Austenitic: Non-magnetic, highly formable and can be cold worked, but not heat treated. Austenitic stainless steel is corrosion resistant but prone to stress corrosion cracking. Often used to make shafts, valves, bolts, bushings, nuts, aircraft fittings, and cryogenic vessels. Austenitic stainless steels are either 200 or 300 series with common grades including 201, 202, 301, 302, 303, 304, 305, 308, 309, 310, 314, 316, 317, 321, 347, 348, and 384.
- Ferritic: Magnetic with lower ductility and corrosion resistance than austenitic grades. Ferritic stainless steel grades have a high resistance to stress corrosion cracking and can be cold worked, but are not heat treated. Often used to make heat exchangers, automotive fasteners, and furnace components. Ferritic stainless steels are 400 series with common grades including 405, 409, 430, 434, 436, 442, and 446.
- Martensitic: Magnetic and heat treatable with higher strength but lower corrosion resistance than ferritic grades. Often used to make pump shafts, bolts and screws, valves, bushings, rivets, coal chutes, jet engine parts, aircraft fittings, mining machinery and fire extinguisher inserts. Martensitic stainless steels are 400 and 500 series with common grades including 410, 414, 416, 420, 431, and 440.
- Precipitation Hardening Grade: These grades are heat treatable, typically have much higher strength than austenitic stainless steels and retain much of their strength in high temperatures. Often referred to as PH Type stainless steel, and used to make military equipment and aircraft structural components. Common grades include 17-7 PH, PH 15-7 Mo, 17-4 PH, and 15-5 PH.
- Duplex: A hybrid of austenitic and ferritic steels, duplex stainless steels are known for exceptionally high strength and stress corrosion cracking resistance. Duplex stainless steels are easily heat treated but difficult to cold form. Often used to make chemical processing equipment, pressure vessels, and heat exchanger components. Common UNS grades include S32101, S32304, S32003, S31803, S32205, S32760, S32750, S32550, S32707, and S33207.
Popular Stainless Steel Alloys
Machining Options
CNC Milling
Mills use rotating tools to cut material into almost any 3D shape. CNC Mills can work with tight tolerances.
Waterjet Cutting
Waterjets mainly cut sheet material into 2D parts using a high-pressure stream of water and abrasive. Waterjet cutting is suitable for most materials and yields clean edges.
CNC Turning
CNC Lathes feed cutting tools into rotating material. Turning is mainly used to produce precise, cylindrical parts.
EDM
Die-Sink and Wire EDM machines create parts by using recurring sparks to remove material. Recommended for intricate designs requiring sharp inside corners and high dimensional accuracy.
Laser Cutting
Laser cutting is often used to produce 2D parts from sheet metal. A laser beam vaporizes a cut path to achieve the desired shape. Great for prototypes and short runs.
Turret Punching
CNC Turret Presses create 2D parts by rapidly punching predetermined shapes into sheet material. Cost-effective for production runs of simple metal parts.
Plasma Cutting
CNC Plasma Cutters use a high-velocity stream of ionized gas to cut parts out of sheet metal. Excellent for producing 2D parts when working with thick metal sheets.
Secondary Manufacturing
After manufacturing, parts may require additional processing. Secondary services include CNC bending, grinding, tapping, knurling and more.
Surface Finishing
Finishing processes are used to enhance appearance, surface durability, and corrosion resistance. Options include powder coating, anodizing, plating, polishing and more.
