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Stainless

    Stainless steel has a variety of characteristics and attributes to satisfy your consumption needs. Stainless steel is a steel alloy containing a minimum of 10.5 to 11 percent chromium by mass. Stainless steel is most generally used for heat exchange, fluid transportation, and desalination. They are used in countless industries such as aerospace, oil and natural gas, engineering, and construction. Stainless steel is 100 percent recyclable which will permit breaking down and re-building up new and better structures. Stainless steel is a stain resistant alloy that is easily welded, extremely low maintenance, and has a high-temperature tolerance to eliminate oxidation. Stainless steel does not readily corrode, rust, or stain with water as regular steel does which gave it the name Corrosion-resistant Steel or CRES. It is exceptionally durable and can be used in extreme environments for all of your projects. There are many different grades and surface finishes to fulfill your requests.

      There are many different types of stainless steel, for instance adding nickel creates an austenitic structure that is non-magnetic and less brittle at low-temperatures. Ferretic stainless steels are better for engineering properties than austenitic steels, but have a lower corrosion resistance due to the lower chromium and nickel content. The last common stainless steel is martensitic stainless steels that are not as resistant to corrosion as the other types, but are extremely strong and tough due to the higher carbon content as well as highly machinable, and can be hardened by heat treatment. Stainless steels are not a powerful conductor of electricity, but are highly sought after for its cleanliness since it has no pores or cracks which halts contamination and maintains a pure product. It enhances the buyers experience with a perfect surface that will not harbor dirt or grime. It shines with luster, causing it to be perfect for appliances and jewelry.

     The stainless tubes are thin walled and used for low pressure fluids while stainless pipes are applied specifically to handling high-pressure fluids. Stainless pipes and stainless tubes are found in food processing and beverage, biomedical, pharmaceutical, chemical processing, heat exchange, fire equipment, recreational vehicles, and agricultural industries. Both stainless pipe and stainless tubes are used for the fluid transportation process. There are many different types of stainless steel pipes and tubes such as welded ornamental tubing ASTM 554, welded stainless pipe ASTM A312, seamless tubing ASTM A213/ ASTM A269/ ASTM A511, and welded stainless tube ASTM A249/ ASTM A269. Some mechanical applications used in processing stainless steel tubes and pipes includes band sawing, production sawing, lathe cutting, chamfering, center-less grinding, and O. D. polishing.

     Stainless bars derive from its structural strength and are often used in construction, not only for reinforced concrete, but for specialty construction. The alloys in stainless steel are not only strong, but extremely corrosion resistant material, which makes them especially useful in sea side cities and highways in addition to places where salt is used on roads. Some examples of austenitic, martensitic, duplex and precipitation hardened stainless steel bars include ASTM A484, ASTM A582, ASTM 276, ASTM A182, ASTM A193, ASTM A582, ASTM A314, ASTM A564, and ASTM A479. 

Stainless Steel Tubes and Pipes

Type

ASTM

Description

Industries

Test Requirements

Welded Ornamental Tubing

A554

These tubes are made from flat-rolled steel by an automatic welding process and may not have an additional filler metal. Possible shapes offered include round, square, rectangular, or special. ASTM A554 is produced for many applications including mirror bracker arms, railings and ladders, medical equipment, and automotive step bars and grille guards.

Food Processing, Beverade, Medical, Pharmaceutical, chemical Processing, Heat Exchanger, Fire Equipment, Recreational Vehicles, and Agriculture.

Electric test or Hydrostatic Test

Welded Stainless Pipe

A312

ASTM A312 is a welded Stainless Pipe that is highly resistant to corrosion and high temperatures and can be cheaper to manufacture than seamless piping. Some typical applications include pulp and paper mills, food processing plants, and other industries that require corrosion resistance.

Electric test or Hydrostatic Test

Seamless Tubing

A213

Some requirements for A213 seamless tubing includes a higher creep-rupture strength and is produced by the seamless process. It can be either hot finished or cold finished. This type of seamless tubing can be ferretic or austenitic in the categories of boiler, superheater, and heat exchange.

The tension test, the hardness test, the flattening test, and the flaring test are required to be done on each tube. Nondestructive electric test and Hydrostatic Test

A269

ASTM A269 are required to have a general corrosion resistance and a low or high temperature service. All materials must be furnished in the heat-treated condition

The different mechanical test requirements include flaring test, flange test, hardness tesr, and reverse flattening test as well as non-destructive electric test or hydrostatic test.

A511

The ASTM A511 Type may be cast in ingots or strand cast. Tubes are produced in a seamless process by either cold or hot working. All tubes that are of austenitic quality must be furnished in the annealed condition.

Requirements include flange test, harness test, and hydrostatic or nondestructive electric test.

Welded Stainless Tubing

A249

ASTM A249 is produced specifically for normal wall thickness welded tubes and heavily cool worked tubes made from austenitic steels intended for boilers, superheaters, heat exchangers, or condenser tubes. Some common employments for A249 are tailpipes on automobiles, boats, and railings.

Tests required include the tension test, flattening test, flange test, reverse-bend test, hardness test, and hydrostatic or nondestructive electric test.

A269

All material of ASTM A269 must be in the heat-treated condition. And cover nominal wall thickness and welded austenitic steel tubing for general corrosion resistance and low or high temperature services.

Tests required include the flaring test, flange test, hardness test, reverse flattening test, and the hydrostatic or nondestructive electric test.

         

  

 

 

 

Stainless Steel Bar

Type

AISI

ASTM

Description

Austentic

303

A-484/ A-582

  Machining-fee adaptation of Type 302/304, meant for heavier incisions. This specific grade is typically used for screw machine products, nuts, bolts, shafts, valves, and bushings.

304

A-484/ A-182/ A-276/ A-479

Low-carbon content adaptation of Type 302 for constraint of carbide precipitation during the welding process. This grade of stainless steel is often used for brewing equipment, chemical and food processing equipment, cryogenic vessels, gutters, downspouts, as well as flashings.

304-L

A-182/ A-479/ A-193/ A-484/ A-276

Extra-low-carbon adaptation of Type 304 for even further constraint of carbide precipitation during the welding process. This modification or grade is commonly used in applications such as coal hopper linings, tanks for liquid fertilizer, and tomato paste.

316

A-182/ A-484/ A-276/ A-193/ A-479

This grade of stainless steel bars has a greater corrosion resistance than Types 302 and 304 and high yield strength. Type 316 is typically used for chemical and pulp handling equipment, hotographic equipment, brandy vats, fertilizer product parts, ketchup cooking kettles, and yeast tubs.

316-L

A-182/ A-484/ A-276/ A-193/ A-479

Type 316-L is an extremely low-carbon adaptation of Type 316. This is a type of stainless steel in which welded construction of intergranular carbide precipitation must be avoided. Type 316 products require considerable amounts of welding.

321

A-182/ A-193/ A-276/ A-479

Stabilized for an assemblage of welded materials, can be immersed in sever corrosive conditions, and be sustained in an environment of 800 to 1600 F. Type 321 is commonly employed in aircraft exhaust manifolds, fire walls, cabin heaters, boiler shells, process equipment, expansion joints, elastic couplings, and pressure receptacles.

347

A-182/ A-193/ A-276/ A-479

Type 347 is comparable to Type 321 with higher yield strength. This type is typically employed in airplane exhaust stacks, jet engine parts, and welded tank cars for chemicals.

316 Pump Shaft

A-276/ A-479

Pump shaft stainless steel bar is produced with a superior surface finish, close diameter tolerance, measured mechanical characteristics, and exacting straightness.

Martensitic

410

A-276/ A-314/ A-479/ A-193

This common grade is a general purpose heat treatable type. It can be used in many industries and applications such as machine parts, pump shafts, bolts, bushings, coal chutes, flatware, fishing tackle, hardware, jet engine parts, mining equipment, rifle barrels, screws, and valves.

410 Quench and Double Temp

A-484

This is an adapted form of Type 410 that is quenched and double tempered for components used in hydrogen sulfide.

416

A-484/ A-582

This is a machine free adaptation of type 410 used for heavier cuts. Type 416 is employed in aircraft fittings, nuts, bolts, screws, fire extinguisher components, and rivets.

416HT

A-484/ A-582

This adaptation of type 416 is pre-hardened for finished appliance components Rc26-32.

440C

A-276

This grade of AISI stainless steel bars yields the highest hardenability of stainless steels and is commonly employed in balls, bearings, races, nozzles, components for oil well pumps, and valve parts.

440C BQ

A-276/ A-756

This grade of martensitic stainless steel has a high yield strength, corrosion resistance, and hardenability which are attained by low temperature heat treatment. Type 440C BQ is commonly employed in gears, cams, shafting, flatware, and aircraft components.

416 Pump Shaft

A-582

Type 416 pump shaft quality stainless steel bar is manufactured with special surface finish, close width tolerance, meticulous mechanical properties, and precision straightness.

420 Modified

A-370/ E-23/ E-112/ A484

Type 420 modified is an API 6A approved 13% chromium martensitic stainless steel designed for application in structural and pressure comprising oil tool components used in CO2 environments.

Duplex

2205

A-182/ A-276

Type 2205 is a duplex is a mixed austentic/ ferritic stainless steel retaining high yield strength and respectable resistance to stress corrosion. It is commonly used for heat exchangers and oil and gas industry equipment.

Precipitation Hardening

13Cr-8Ni

A-564

This stainless steel has high yield strength, ductility, and durability both longitudinally and diagonally. AISI 13Cr-8Ni has exceptional general corrosion resistance as well as a high resistance to stress corrosion cracking. It is typically employed in petrochemical applications, aircraft structural components, landing gear parts, shafts, valves, fittings, and fasteners.

15Cr-5Ni

A-564

AISI Type 15Cr-5Ni is a martensitic stainless steel with high yield strength, corrosion resistance, and hardenability obtained by low temperature heat treatment. Come applications include gears, cams, flatware, shafting, and aircraft parts.

17Cr-4Ni

A-564 (Type 630)

AISI 17Cr-4Ni is comparable to 15Cr–5Ni, but contains a faintly higher amount of chromium. Some common industrial uses include gears, springs, flatware, fasteners, and aircraft and turbine parts.

17Cr-4Ni H1150

A-564 (Type 630)

This adaptation of 17Cr-4Ni is age-hardened and offers greater machinability when associated with condition A 17Cr–4Ni. By investing in this aged product, it will save both time and the expense of sending components for heat treatment.

17Cr-4Ni Double Aged H1150

A-564 (Type 630)

This from of AISI 17Cr-4Ni H1150 is annealed and then double age-hardened. It is often used in oil field valves, pump shafts, paper mill machinery, and gears.

       

 

 

 

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