Neill Mechanical Technology, Inc.


Custom Metal Fabrication

Rely on the Mechanical Contractors at NMTI.CO in Waco, TX, to meet your custom metal fabrication needs. We offer in-person services throughout Central Texas.  Shop fabrication orders can be shipped wherever you need it.

Stainless Steel

Considered quite special for its corrosion-resistant and long-lasting features. We offer:

  • Stainless Steel Sheets
  • Pipe
  • Tubing
  • Sanitary Tubing & Fittings
  • Stainless Steel Structural Pieces
  • Flat & Angle Bars
  • Rounds
  • Plates
  • Channels
  • Square, Rectangle, & Round Tubing




203 EZ (S20300).  Superior machining austenitic stainless designed specifically for high speed automatic machine operations.  Faster speeds, better finish, longer tool life when compared to 303.  Same corrosion resistance.

303 (S30300).  Free machining variation of T-302/304 for use in automatic machining operations.  Corrosion resistant to atmospheric exposures, sterilizing solutions, most organic and many organic chemicals; most dyes, nitric acid and foods.

304 (S30400).  The most widely used of the stainless and heat resisting steels.  Offers good corrosion resistance to many chemical corrodents as well as industrial atmospheres.  Has very good formability and can be readily welded by all common methods.  304 Prodec offers improved machinability.

304 L (S30403).  Extra low carbon variation of T-304 avoids harmful carbide precipitation due to welding.  Same corrosion resistance as T-304.  Slightly lower mechanical properties than T-304.  304 L Produce offers improved machinability.

309/309S (S30900, S30908.  Used in high temperature applications.  High scale resistance.  Corrosion resistance superior to 304.  Excellent in resisting sulfite liquors, nitric acid, nitic-sulfuric mixtures, acetic, citric and lactic acids.  309S (.08 max. carbon) resists corrosion in welded parts.

310/310S (S31000, S31008).  Higher alloy content improves the characteristics of 309.  Corrosion resistance better than 304.  Excellent oxidation resistance.  310S (.08 max carbon) offers improved corrosion resistance in welded components.

316  (S31600).  Better corrosion and pitting resistance as well as higher strength at elevated temperatures than T-304.  Used for pumps, valves, textile and chemical equipment, pulp & paper and marine applications.  316 Prodec offers improved machinability.

316 L (S31603).  Extra low carbon variation of T-316 to avoid carbide precipitation due to welding.  Same excellent corrosion resistance of T-316.  316 L offers improved machinability.

317 L (S31703).  Moly bearing austenitic steel with alloy content somewhat higher than 316.  This chemistry gives 317 L superior corrosion resistance in difficult environments, as well as higher creep, stress-to-rupture and tensile strengths at elevated temperatures.  Applications include FGD scrubbers, chemical and petrochemical processing equipment and pulp and paper equipment.

321 (S32100).  Stabilized with titanium for weldments subject to severe corrosion.  No carbide precipitation.  Excellent resistance to a variety of corrosive media.  Immune to most organic chemicals, dyestuffs and many inorganic chemicals.

330 (N08330).  Austentic alloy with carburization/oxidation resistance - withstands thermal fatigue.  Applications include annealing covers, heat treat equipment, fans, combustion chambers and radiant tubes.

347 (S34700).  Stabilized by Cb and Ta for use in carbide precipitation range of 800-1500ºF without impairment of corrosion resistance.  Characteristics similar to T-321.

Nitronic® 30.  A nitrogen-strengthened stainless developed for applications requiring a good level of aqueous corrosion resistance combined with good resistance to abrasive and metal-to-metal wear.  Applications include conveyors, hoppers, chutes, mixing equipment, screens, wear plates - any where there is wet sliding abrasion. 

Nitronic 50 (S20910) (Formerly 22-13-5).  A nitrogen strengthened austenitic stainless that provides a combination of corrosion resistance and strength.  Corrosion resistance greater than that of T-316 and T-316L plus approximately twice the yield strength.  Very good mechanical properties at both elevated and subzero temperatures. 

Nitronic 60 (S21800).  Excellent galling resistance, corrosion resistance comparable to T304 plus approximately twice the yield-strength.  Metal to metal abrasive wear resistance is also good.

Alloy 20 (N08020).  One of the “super” stainless steels designed for maximum carbide resistance to sulfuric acid attack.  Stabilized with columbium to minimize carbide precipitation during welding.  Widely used throughout the chemical process industry.


410 (S41000).  Heat-treatable stainless used widely where corrosion is not severe - air, fresh water, some chemicals and food acids.  Typical uses include valve & pump parts, fasteners, cutlery, turbine parts, bushings.

410 DOUBLE TEMPERED (S41000).  Quenched and double tampered variation of T-410 conforming to NACE MR-01-75 (rev. 1980) API 6A Type III.  For parts used in hydrogen sulfide (H2S) service.

416 (S41600).  Free-machining variation of T-410 with useful corrosion resistance to natural food acids, basic salts, water and most atmospheres.

422 (S42200).  A martensitic stainless steel designed for service temperatures up to 1200ºF with a good combination of high strength and toughness.  It is used in stream turbines as blading and bolting material.

440 C (S44004).  A high carbon (.95/1.20%C) chromium steel that can attain the highest hardness (Rockwell C60) of any standard stainless grade.  In the hardened and stressed relieved condition, 440 C has maximum hardness together with high strength and corrosion resistance.  Also has good abrasion resistance.  440A is lower carbon variety (.60/.75%C) which results in lower hardness but greater toughness in the hardened condition.


409 (S40900).  Lowest cost stainless - used extensively in automotive exhausts systems.  Because of its combination of economy and good resistance to oxidation and corrosion, it creates opportunities to economically improve the performance of a wide range of parts where surface appearance is not important.

430 (S43000).  Is the most popular of the non-hardenable chromium stainless steels.  It combines good corrosion and heat resistance with good mechanical properties.  Oxidation resistance to 1500ºF widely used in both industrial and consumer products.


17-4 (S17400).  A precipitation hardening grade combining high strength and hardness with corrosion resistance similar to T-304 in most media.  Simple low temperature heat at 900/1150ºF eliminates scaling and prevents excessive warpage.

17-4 DOUBLE AGED H1150 (S17400).  Solution annealed then double age hardened to procedure #1 in NACE 01-75.  Used in many pressure control applications in the energy market.

15-5 (S15500).  A vacuum arc remelted grade which offers high strength and hardness.  Excellent corrosion resistance plus excellent transverse toughness.

PH13-8Mo2 (S13800).  A martensitic precipitation hardening stainless that provides a combination of excellent toughness and good traverse mechanical properties and excellent corrosion resistance.


2205 (S31803).  On of the “duplex” family of stainless steels with a structure that consists of approximately 50% austenite and 50% ferrite.  This duplex structure provides good stress corrosion resistance in chloride and hydrogen sulfide.  It develops twice the yield strength of standard austenitic stainless steels.  Used primarily in oil and gas field piping applications.   



With anti-corrosion properties, aluminum is light and doesn't require painting. It is also less expensive than stainless steel. Come to us for:


  • Aluminum Sheets
  • Pipe
  • Tubing
  • Sanitary Tubing & Fittings
  • Flat Bars
  • Angle Bars
  • Rounds
  • Plates
  • Channels
  • Square/Round & Rectangle Tubing  



1100 (UNS A91100) is commercially pure aluminum (99.00% minimum).  Excellent corrosion resistance, workability and weldability;  high thermal conductivity.  Tensile strength range 14,000 to 24,000 psi.  Uses include deep drawing, spinning, sheet metal work, decorative and architectural applications, air ducts, name plates, fan blades, etc.  Conforms to Federal specification QQ-A-250/1 and ASTM B-209.

3003 (UNS A93003) is alloyed with 1.2% manganese to provide a tensile strength range of 17,000 to 30,000 psi.  Excellent workability, weldability and corrosion resistance.  Used from drawing, spinning, fuel tanks, sheet metal work and other applications where slightly higher strength than 1100 is required.  Conforms to Federal specification QQ-A250/2 and ASTM B-209.

5005 (UNS A95005) is alloyed with .8% magnesium.  Tensile strength range 18,000 to 30,000 psi.  Excellent workability, weldability, and corrosion resistance.  Specified for applications comparable to 1100 and 3003 - where anodizing is required.  Anodized finish matches that of architectural alloy 6063.  Conforms to ASTM specification B-209.

5052 (UNS A95052) is alloyed with 2.5% magnesium.  Tensile strength range 31,000 to 44,000 psi.  Very good corrosion resistance, good workability, weldability and strength.  Used for aircraft fuel tanks, storm shutters, refrigerator liners, utensils, electronic mounting plates and panels, fan blades, etc.  Conforms to Federal specification QQ-A-250/8 and ATSM B-209.

5083 (UNS A95083) is alloyed with 4.45% magnesium, 0.65% manganese and 0.15% chromium.  Tensile strength range 40,000 to 59,000 psi.  For use in structures requiring high weld efficiency for maximum joint strength - plus light weight and corrosion resistance.  Applications:  marine components, truck bodies, construction equipment, tanks, structural towers, drilling rigs, cryogenic applications, etc.  Conforms to ASTM B-209 and Federal specification QQ-A-250/6.

5086 (UNS A95086) is alloyed with 4.0% magnesium, .45% manganese and 0.15% chromium.  This alloy has a typical tensile strength range of 40,000 to 54,000 psi.  It offers resistance to stress corrosion and superior resistance to atmospheric corrosion plus good general workability.  Applications include tanks (stationary, trailer and rail-car), marine components and welded assemblies of all kinds.  Conforms to Federal specification QQ-A-250/7 and ASTM B-209.

5454 (UNS A95454) is alloyed with 2.7% magnesium, 0.8% manganese and 0.12% chromium.  Tensile strength range 36,00 to 47,000 psi.  Good formability, weldability and corrosion resistance.  Uses include pressure vessels (ASME code approved for up to 400ºF.), tanks, dump truck bodies, welded structures, etc.  Conforms to Federal specification QQ-A-250/10 and ATSM B-209.

5456 (USNS A95456) is alloyed with 5.1% magnesium, 0.8% manganese and .10% chromium.  Tensile strength range 46,000 to 58,000 psi.  It has good general corrosion resistance but is not quite as weldable and formable as 5086.  In some cases, 5456 should be annealed or stress relieved after forming and should always be used with caution if subject to stress corrosion.  Uses include pressure vessels, welded structures, etc.  Conforms to Federal specification QQ-A-250/9 and ASTM B-209.


2024 (UNS A92024) is alloyed with 4.5% copper.  Tensile strength range 30,000 to 63,000 psi.  Fair workability and corrosion resistance.  Forming operations are limited.  Used for high strength structural and aircraft applications.  Also available as Alclad for improved corrosion resistance.  2024 confirms to Federal specification QQ-A-250/4 and ASTM B-209.

6061 (UNS A96061) is alloyed with 1.0% magnesium and .6% silicon.  Tensile strength range 20,000 to 42,000 psi.  Good formability, weldability and corrosion resistance.  Used for engineering and structural applications, boats, furniture, transportation equipment, etc.   Conforms to Federal specification QQ-A-250/11 and ASTM B-209.

7075 (UNS A97075) an Alclad 7075 are heavily alloyed with zinc with lesser amounts of magnesium, copper and chromium.  One of the strongest of the aluminum alloys, its use parallels that of 2024 with 7075 selected when higher mechanical properties are desired.  Forming operations are limited.  Also available as A;c;ad for improved corrosion resistance.  All 7075 flat products conform to ASTM B-209; 7075 Bare conforms to Federal Specification QQ-A-250/12, Alclad 7075, QQ-A-250/13.


Alloy does not typically require painting and is naturally corrosive resistant. We have:

  • Sheets
  • Pipe
  • Tubing
  • Sanitary Tubing & Fittings
  • Flat Bars
  • Angle Bars
  • Rounds
  • Plates
  • Channels
  • Square, Round, & Rectangle Tubing


Copper is an increasingly popular material, as it has excellent anti-microbial properties and is toxic to a variety of pathogens. Contact us today to learn more about our copper pricing.  Come to us for:

  • Sheets
  • Rounds
  • Squares

C110 Electrolytic Tough Pitch Copper 

(UNS C11000) has the highest degree of electrical conductivity of any metal except silver.  High ductility makes it a good choice for drawing, forming and spinning operations.  It can be cold-worked or hot-formed and has highly suitable characteristics for welding and soldering.  Corrosion resistance is excellent.  Conforms to ASTM specification B133 (H04) and B187.  Identification color:  black.

Shop Fabrication    

We can fabricate what you need in our shop and ship it wherever you need it.

Custom Metal | Neill Mechanical Technology

On site Repair and Installation    

If you're located in Central Texas we provide on site repair and installation services.

Custom Metal | Neill Mechanical Technology