Stainless Steel GTAW Welding Services

Stainless steel is a steel alloy that contains a minimum of 10 percent chromium that offers a pristine surface finish and exceptional corrosion resistance. The addition of chromium provides a pristine surface finish and exceptional corrosion resistance not found in carbon steels.

Stainless steel has an excellent ability to resist stains and corrosion. Additionally, the chromium content in stainless steel gives it the ability to self-heal – develop a chromium oxide film which when damaged and exposed to oxygen will begin to heal itself. For these reasons, it is a great material for applications where your part may be exposed to different liquids or chemicals.

Superior Joining Technologies, Inc. provides stainless steel CNC machining services and custom stainless steel GTAW welded parts. We have the experience and knowledge to produce stainless steel components that perfectly meet your needs and expectations.

Properties and Benefits of Stainless Steel

• High strength
• Self-protective
• Excellent heat resistance
• Excellent corrosion resistance
• Excellent impact resistance
• Surface finishing is not required
  
  

CNC Stainless Steel Machining

With very few stainless steel machining services in the United States, customers come to Superior Joining Technologies, Inc. for their experience and knowledge with many different grades of stainless steel. We produce beautifully finished CNC stainless steel components.

We manufacture custom CNC stainless steel parts with precise tolerances while meeting your deadline and order quantities. We provide tolerances as close as +/- .0002”. CNC machining produces parts with excellent mechanical properties, accuracy, and repeatability from stainless steel.

Stainless Steel Welding Services

At Superior Joining Technologies, Inc., we provide high-quality stainless steel GTAW welding services. We provide NADCAP accredited Gas Tungsten Arc Welding (GTAW) or Tungsten Inert Gas (TIG) Welding services resulting in a clean and highly controllable precise weld for stainless steel projects. We offer manual welding, microscopic welding, laser welding, seam welding, and resistance spot welding for stainless steel.

CNC Machined and/or GTAW Welded Stainless Steel Parts

Stainless steel can be used in a large variety of metal parts and components. These include:

• Cookware
• Home appliances
• Hand tools
• Storage containers
• Pressure tanks
• Automotive parts
• Handles
• Marine parts
• Medical devices
• Hospital and lab instruments
• Engine parts
• Electronic parts
• Weld ferrules
• Cables
• Shafts
• Valves
• Pins
• Fasteners
• Screws
• Adapters
• Connectors
• Brackets

Types of Stainless Steel

Austenitic

• Non-magnetic, highly formable, and can be cold worked, but not heat treated.
• Corrosion-resistant, but prone to stress corrosion cracking
• Often used to make shafts, valves, bolts, bushings, nuts, aircraft fittings, brewing equipment, cryogenic vessels
• 200 or 300 series 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
• High resistance to stress corrosion cracking
• Often used to make heat exchangers, automotive fasteners, and furnace components
• 400 series with common grades including 405, 409, 430, 434, 436, 442 and 446

Martensitic

• Magnetic and heat treatable with a higher strength but lower corrosion resistance than ferritic grades
• Often used to make pump shafts, bolts and screws, valves, bushings, rivets, coal chutes, cutlery, jet engine parts, aircraft fittings, mining machinery, rifle barrels, and fire extinguisher inserts
• 400 and 500 series with common grades including 410, 414, 416, 420, 431 and 440

Precipitation Hardening Grade

• Heat treatable, typically higher strength and retain high strength in high temperatures
• PH Type stainless steel
• 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

• Hybrid of austenitic and ferritic steels, known for exceptionally high strength and stress corrosion cracking resistance
• Easily heat-treated but difficult to cold form
• Used to make chemical processing equipment, pressure vessels ad heat exchanger components
• Common UNS grades include S32101, S32304, S32003, S31803, S32205, S32760, S32750, S32550, S32707 and S3320

Stainless Steel Grades

Superior Joining Technology, Inc. has experience providing CNC machining and welding services to a wide variety of metal parts. Some of the most popular are listed below.

Stainless Steel 302

• One of the most popular
• Corrosion-resistant and ductile

Stainless Steel 303

• Most easily machined austenitic steel variety
• Excellent toughness

Stainless Steel 304

• Pristine surface finish
• Higher corrosion and oxidation resistance
• Formable, weldable, and ideal for use in corrosive environments
• Used in railroad and industrial equipment, transport containers, household appliances, cutlery, and hand tools

Stainless Steel 305

• Highest formability of all austenitic stainless steels
• Ideal for applications such as barrels and shells
• Weldable
• Used in drawn housings, rivets, tank covers, kitchen utensils, and writing instruments

Stainless Steel 309

• Ideal for high-temperature applications up to 1900°F
• Strong and high corrosion resistance
• Weldable and relatively easy to machine
• Used in furnaces, power boiler tube hangers, generators, paper mills, petroleum refining, brazing fixtures, anchor bolts, refractory supports, and oven linings

Stainless Steel 310

• Maintains strength and corrosion resistance from 2100°F to -450°F
• Superior corrosion resistance compared to 309
• Weldable
• Used in oil burners, heat exchangers, combustion tubes and chambers, radiant tubes, kilns, and conveyor belt rollers

Stainless Steel 314

• Nearly identical to 310 but contains more silicon to provide increased heat resistance
• Used in furnaces, oil burners, heat exchangers, combustion tubes and chambers, firebox sheets, flare tips, welding rods, filler wires, annealing covers, fluidized bed coal combustors, radiant tubes, tube hangers, coal gasifier components, and kilns

Stainless Steel 317

• Used in highly corrosive environments
• Weldable and easily machined
• Ideal for making generators, absorber towers, boilers, condenser tubes, heat exchangers, pipes, pressure vessels, stack liners, fittings, and valves

Stainless Steel 321

• Used in applications with temperatures reaching up to 1500°F
• Minimally prone to creek and rupture and highly resistant to scaling and vibration fatigue
• Used to make aircraft exhaust stacks and manifolds, jet engine parts, boilers shells, cabin heaters, pressure vessels, flexible coupling, expansion joins, and wire cloth

Stainless Steel 347

• Nearly identical to 321 but offers higher resistance to intergranular corrosion
• Used to make aircraft exhaust stacks and manifolds, jet engine parts, chemical processing equipment, boilers shells, cabin heaters, pressure vessels, flexible coupling, expansion joints, and wire cloth

Stainless Steel 2205 Duplex

• Highest strength and hardness
• Suitable for applications in severe environments including environments containing chlorides and hydrogen sulfide
• Used in flue gas filters, chemical tanks, heat exchangers, and acetic acid distillation components

Stainless Steel 420

• High strength and corrosion resistance
• Hardest of all stainless steels when hardened
• Used in shear blades, needle valves, and surgical equipment

Stainless Steel 17-4

• SAE grade 630
• Precipitation hardening alloy with good corrosion resistance
• Used in aerospace applications, base plates, chemical processing equipment, oil and petroleum refining equipment, and nuclear components

Stainless Steel 416

• Magnetic
• High machinability
• Used in valves, pump and motor shafts, washing machine components, gears and bolts, nuts and studs, automatic screw-machined components

Industry Applications

Stainless Steel is valued in many industries for its corrosion resistance and shiny outer layer. Some of these industries include:

• Automotive
• Aerospace
• Industrial
• Military
• Pharmaceutical
• Mining
• Construction
• Transportation
• Motion control/instrumentation
• Medical
• Dental
• Defense
• Electronic
• Sporting goods
• Consumer goods
• Water filtration

Rely on Superior Joining

Superior Joining Technologies, Inc. is a highly technical and precise welding operation serving any industry that needs a high level of expertise and documentation. We work to support our customers, grow each employee, and then reach out to have a positive impact on our community. 

In addition to stainless steel, we offer our services for a variety of other materials including carbon steel, aluminum, and titanium.