Table of Contents
| Products | Specs |
|---|---|
 13-8 Round Bar |
AMS 5629 |
 13-8 Square Bar |
AMS 5629 |
 13-8 Flat Bar |
AMS 5629 |
 13-8 Forged Block |
AMS 5629 |
| Products | Specs |
|---|---|
| 15-5 PH Round Bar |
AMS 5659 |
| 15-5 Flat Bar |
AMS 5659 |
| 15-5 Square Bar |
AMS 5659 |
 15-5 Hexagonal Bar |
AMS 5659 |
| 15-5 Forged Block |
AMS 5659 |
 15-5 Sheet |
AMS 5862 |
| 15-5 Plate |
AMS 5862 |
| Products | Specs |
|---|---|
| 17-4 Round Bar |
AMS 5643 |
| 17-4 Flat Bar |
AMS 5643 |
| 17-4 Square Bar |
AMS 5643 |
| 17-4 Forged Block |
AMS 5643 |
| 17-4 Sheet |
AMS 5604 |
| 17-4 Plate |
AMS 5604 |
| Products | Specs |
|---|---|
| 17-7 Sheet |
AMS 5528 |
| Products | Specs |
|---|---|
| 303 Round Bar |
ASTM A-582 |
| 303 Square Bar |
ASTM A-582 |
| 303 Rectangular Bar |
ASTM A-582 |
| 303 Hexagonal Bar |
ASTM A-582 |
| 303 Plate |
ASTM A-895 |
| Products | Specs |
|---|---|
 304/304L Pipe-Welded & Seamless |
ASTM A-312 |
 304/304L Welded Tube – Round, Square & Rectangle |
ASTM A-554 |
| 304/304L Tread plate |
ASTM A-793 PATTERN B |
| Rectangular Sheared & Edged Bar |
ASTM A-312 |
| 304/304L Plate |
ASTM A-240, ASTM A-480 |
| 304/304L Sheet |
ASTM A-240, ASTM A-480 |
 304/304L Angle |
ASTM A-276, ASTM A-479 |
| 304/304L Hex Bar |
ASTM A-276, ASTM A-479 |
| 304/304L Rectangular True Bar |
ASTM A-276, ASTM A-479 |
| 304/304L Square Bar |
ASTM A-276, ASTM A-479 |
| 304/304L Round Bar |
ASTM A-276, ASTM A-479 |
 304/304L Tee Bar |
ASTM A-276, ASTM A-479 |
 304/304L Beam |
ASTM A-276, ASTM A-479 |
 304/304L Channel |
ASTM A-276, ASTM A-479 |
| Products | Specs |
|---|---|
| 316/316L Pipe – Welded & Seamless |
ASTM A-312 |
| 316/316L Welded Tube – Round, Square & Rectangle |
ASTM A-554 |
| 316/316L Tread Plate |
ASTM A-793 PATTERN B |
| 316/316L Rectangular Sheared & Edged Bar |
ASTM A-240 |
| 316/316L Plate |
ASTM A-240, ASTM A-480 |
| 316/316L Sheet |
ASTM A-240, ASTM A-480 |
| 316/316L Angle |
ASTM A-276, ASTM A-479 |
| 316/316L Hex Bar |
ASTM A-276, ASTM A-479 |
| 316/316L True Bar |
ASTM A-276, ASTM A-479 |
| 316/316L Square Bar |
ASTM A-276, ASTM A-479 |
| 316/316L Round Bar |
ASTM A-276, ASTM A-479 |
| 316/316L Beam |
ASTM A-276, ASTM A-479 |
| 316/316L Channel |
ASTM A-276, ASTM A-479 |
| Products | Specs |
|---|---|
| 321 Rectangular Bar |
AMS 5510 |
| 321 Plate |
AMS 5510 |
| 321 Round Tube |
AMS 5510 |
| Products |
|---|
| 347 Round Bar |
| 347 Plate |
| Products |
|---|
| 410 Round Bar |
| 410 Sheet |
| 410 Plate |
| Products | Specs |
|---|---|
| 416 Round Bar |
AMS 5610 |
| 416 Rectangular Bar |
AMS 5610 |
| 416 Square Bar |
AMS 5610 |
| 416 Hexagonal Bar |
AMS 5610 |
| 416 Plate |
AMS 5610 |
| Product | Specs |
|---|---|
| 420 Round Bar |
AMS 5621 |
| Product |
|---|
| 430 Sheet |
| Product | Specs |
|---|---|
| 440C Rectangular Bar |
AMS 5630 |
| 440C Round Bar |
AMS 5630 |
Stainless steel is a type of high-alloy steel renowned for resisting rust and corrosion. This resistance is primarily due to its chromium content, typically over 10%. Chromium forms a passive layer of chromium oxide on the surface, acting as a protective barrier against further corrosion and enhancing heat resistance. This unique combination of durability, corrosion resistance, and low maintenance makes stainless steel ideal for various applications.
Available from Hadco in forms such as sheets, plates, bars, and tubing, stainless steel is highly versatile. Manufacturers frequently use stainless steel to create home items such as pots and pans, utensils, tools, and larger appliances like refrigerators and ovens. Its hygienic properties and durability make it essential in surgical instruments and industrial equipment. Stainless steel is also vital in the automotive and aerospace industries and is a key construction material for large buildings.
Martensitic: Martensitic refers to a specific type of microstructure found in some steel alloys, characterized by its hardness and strength. This microstructure results from the rapid cooling of austenitic steel, during which carbon atoms become trapped in a body-centered tetragonal lattice, forming martensite. Martensitic steels are known for their high wear resistance and toughness, making them suitable for applications like tools, blades, and structural components. Tempering adjusts the properties of martensitic steel, enhancing its ductility and reducing its brittleness.
Precipitation Hardening: Precipitation hardening, also known as age hardening, is a heat treatment process used to increase the yield strength of malleable materials, particularly alloys. The process involves two main steps:
Austenitic Stainless Steel: Austenitic stainless steel is a type of stainless steel that has a face-centered cubic crystal structure. It is one of the most widely used families of stainless steel, primarily known for its excellent corrosion resistance, high ductility, and good weldability. The primary alloying elements in austenitic stainless steel are chromium (typically 16-26%) and nickel (typically 6-22%), which contribute to its stability and properties. Common grades include 304 and 316, with 316 offering enhanced corrosion resistance, particularly against chlorides. Austenitic stainless steel is a key material in kitchen equipment, chemical processing, and architectural structures.
13-8 MO stainless steel is a martensitic precipitation-hardening alloy known for its excellent strength, high hardness, superior toughness, and good corrosion resistance. Compared to other ferrous-based materials, 13-8 MO stainless steel offers exceptional mechanical properties, even under severe environmental conditions. Its good transverse toughness is achieved through precise chemical composition control, low carbon content, and vacuum melting, ensuring reliability and performance in demanding applications.
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15-5 PH stainless steel, a martensitic precipitation-hardening alloy, delivers high strength, excellent corrosion resistance, and exceptional toughness. Controlled heat treatment processes and a precise composition enhance its mechanical properties. This alloy provides outstanding transverse strength and resists stress corrosion cracking, making it ideal for demanding applications. Aerospace components, medical devices, chemical processing equipment, and structural parts in high-performance industries rely on 15-5 PH stainless steel for its strength, durability, and corrosion resistance.
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17-4 PH stainless steel is the most widely used of all the precipitation-hardening stainless steels. Its balance of performance, durability, and corrosion resistance makes it a reliable choice for high-performance environments. 17-4 PH Stainless steel’s valuable combination of properties allows designers to add reliability to their products while simplifying fabrication and often reducing costs. Typical uses include aerospace components, medical instruments, chemical processing equipment, and structural parts in the energy and marine industries.
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17-4 PH stainless steel is the most widely used of all the precipitation-hardening stainless steels. Its balance of performance, durability, and corrosion resistance makes it a reliable choice for high-performance environments. 17-4 PH Stainless steel’s valuable combination of properties allows designers to add reliability to their products while simplifying fabrication and often reducing costs. Typical uses include aerospace components, medical instruments, chemical processing equipment, and structural parts in the energy and marine industries.
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303 stainless steel delivers enhanced machinability and maintains good corrosion resistance. Sulfur increases its machinability, supporting high-speed machining applications but slightly lowering its corrosion resistance compared to 304 stainless steel. In its annealed state, 303 stays non-magnetic and offers strong mechanical properties. Manufacturers use 303 stainless steel to create screws, bolts, nuts, shafts, and fittings, meeting demands for machinability and moderate corrosion resistance.
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304/304L, a widely utilized “18-8” chromium-nickel austenitic stainless steel, offers economical and versatile corrosion resistance for general-purpose applications. Manufacturers often dual-certify 304L as both 304 and 304L. Industries like food processing, chemical handling, and construction rely on 304/304L stainless steel for its corrosion resistance, durability, and versatility. The key difference between 304 and 304L lies in their carbon content, with 304L containing less carbon. This lower carbon content improves weldability and reduces the risk of carbide precipitation during welding, making it ideal for applications requiring extensive welding. Both grades provide similar strength and corrosion resistance, but 304L performs better in welded components or environments prone to stress corrosion cracking.
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316 stainless steel combines chromium, nickel, and molybdenum to deliver enhanced corrosion resistance, improved protection against chloride-induced pitting, and increased strength at elevated temperatures. It surpasses 304 stainless steel in high-temperature performance and resists sulfuric, hydrochloric, acetic, formic, and tartaric acids, along with acid sulfates and alkaline chlorides. The 316L variant reduces carbon content, preventing carbide precipitation during welding and maintaining optimal corrosion resistance in welded components. Fabricators weld and process both 316 and 316L alloys using standard shop methods. In the annealed state, both alloys stay non-magnetic, but cold working or welding induces slight magnetism.
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The 321 alloy, a titanium-stabilized austenitic chromium-nickel stainless steel, resists intergranular corrosion. As the most widely used stainless steel alloy in the 300 series, it offers excellent forming and welding characteristics. Industries use 321 alloys in applications requiring high-temperature resistance, such as chemical processing and heat exchanger equipment. Its corrosion resistance remains effective across a wide range of temperatures and environments. Many manufacturers choose 321 alloy as a substitute for other stainless steel alloys due to its superior strength and durability.
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347 stainless steel is a stabilized austenitic alloy known for its excellent corrosion resistance and high-temperature strength. It is stabilized with niobium (aka columbium) to prevent carbide precipitation, making it resistant to intergranular corrosion after welding or exposure to high temperatures. This feature makes 347 ideal for prolonged heat exposure applications, such as in chemical processing, exhaust systems, and aerospace components. It offers similar corrosion resistance to 304 stainless steel but with superior performance in high-temperature environments.
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410 stainless steel, a martensitic alloy, delivers high strength, good corrosion resistance, and excellent wear resistance. Heat treatment adjusts its mechanical properties to meet specific application needs. While it offers lower corrosion resistance than austenitic grades, it performs well in mildly corrosive environments and supports applications requiring moderate resistance to oxidation and rust. Manufacturers use 410 stainless steel to produce cutlery, fasteners, valves, pump shafts, and industrial machinery parts, where strength and durability are essential.
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416 stainless steel alloy combines iron, 11-13% chromium, manganese, and 0.15-0.20% carbon to deliver strength, hardness, and good corrosion resistance. Its high machinability makes it a preferred choice for parts like valves and pumps. Heat treatment increases its strength and hardness, while resistance to stress corrosion cracking supports its use in marine and chemical processing applications. Despite being non-magnetic in its natural state, it supports welding using standard techniques. These properties make 416 stainless steel a versatile material for demanding environments.
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420 stainless steel, a martensitic alloy, contains 12-14% chromium, 0.15-0.25% carbon, and 1-2% manganese. Its high corrosion and wear resistance make it ideal for cutlery, surgical instruments, and non-magnetic stainless steel products. Heat treatment hardens the alloy, and its magnetic properties enable it to be used in various industrial applications. Automotive and food processing industries rely on 420 stainless steel for its strength, durability, and resistance to harsh environments.
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430 stainless steel is a ferritic alloy known for its good corrosion resistance, formability, and moderate mechanical properties. It is highly resistant to oxidation and rust in mildly corrosive environments, making it suitable for indoor and decorative applications. Unlike austenitic grades, 430 is magnetic and has lower nickel content, offering a more cost-effective option. Common uses include kitchen appliances, automotive trim, architectural components, and dishwasher liners, where aesthetic appeal and elemental corrosion resistance are essential.
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440C stainless steel combines 16-18% chromium, 0.75-1.2% carbon, and 1-2% manganese to deliver high corrosion and exceptional wear resistance. It supports the production of cutlery, surgical instruments, and non-magnetic stainless steel products. Heat treatment increases its hardness, while its magnetic properties expand its range of applications. The aerospace and medical industries rely on 440C stainless steel for its strength, durability, and performance in demanding environments.
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