About Stainless Chain

Questions and facts on stainless steel chain and accessories:

What is stainless steel?
Why choose stainless steel over other materials?
How does Suncor determine the working load limit of its products?
What effect does temperature have on chain working load limits?
How do I purchase Suncor product?
Can I buy stainless steel chain by the foot?  Is there a minimum I need to purchase?
Does Suncor offer stainless chain in "full barrel" quantities?
What is the warranty on Suncor Stainless product?
Are any components designed and manufactured to meet Federal & Military Specifications?
What is NACM?

What is stainless steel?

Stainless steel is essentially a low carbon steel which contains Chromium at 10% or more by weight. It is this addition of Chromium that gives the steel its unique stainless, corrosion resisting properties.

The Chromium content of the steel allows the formation of a rough, adherent, invisible, corrosion-resisting Chromium Oxide film on the steel surface. If damaged mechanically or chemically, this film is self-healing, providing that Oxygen, even in very small amounts, is present. The corrosion resistance and other useful properties of the steel are enhanced by increased Chromium content and the addition of other elements such as Molybdenum, Nickel and Nitrogen.

Why choose stainless steel over other materials?

The many unique values provided by stainless steel make it a powerful candidate in materials selection. Engineers, specifiers and designers often underestimate or overlook these values because of what is viewed as the higher initial cost of stainless steel. However, over the total life of a project, stainless is often the best value option.

  • Corrosion resistance
    Lower alloyed grades resist corrosion in atmospheric and pure water environments, while high-alloyed grades can resist corrosion in most acids, alkaline solutions, and chlorine bearing environments, properties which are utilized in process plants.
  • Strength-to-weight advantage
    The work-hardening property of austenitic grades, that results in a significant strengthening of the material from cold-working alone, and the high strength duplex grades, allow reduced material thickness over conventional grades, therefore cost savings.
  • Long term value
    When the total life cycle costs are considered, stainless is often the least expensive material option.
  • Impact resistance
    The austenitic microstructure of the 300 series provides high toughness, from elevated temperatures to far below freezing, making these steels particularly suited to cryogenic applications.
  • Fire and heat resistance
    Special high Chromium and Nickel-alloyed grades resist scaling and retain strength at high temperatures.
  • StainlesssSteel is a "Green" material
    To ensure a high quality of life, the materials that we use as consumers and manufacturers should meet not only technical performance standards, but have a long service life, be usable in a great number of applications, and be environmentally friendly. Once their service is complete, they should be 100% recyclable, thereby completing the life cycle to be used once again. Stainless steel is such a material.
    The longevity of stainless is the result of the alloying composition and, therefore, it has a natural corrosion resistance. Nothing is applied to the surface that could add additional material to the environment. It does not need additional systems to protect the base metal, the metal itself will last.
    Stainless steel needs less maintenance and its hygienic qualities means that we do not have to use harsh cleaners to get a clean surface. There is little or nothing to dump into the drain that could have an environmental impact.
    Stainless steel products complete their service life. There is less concern about disposal since this material is 100% recyclable. In fact, over 50% of new stainless steel comes from old remelted stainless steel scrap, thereby completing the full life cycle.
  • Hygiene
    The easy cleaning ability of stainless makes it the first choice for strict hygiene conditions, such as hospitals, kitchens, abattoirs and other food processing plants.
  • Aesthetic appearance
    The bright, easily maintained surface of stainless steel provides a modern and attractive appearance.
  • Ease of fabrication
    Modern steel-making techniques mean that stainless can be cut, welded, formed, machined, and fabricated as readily as traditional steels.

How does Suncor determine the working load limit of its products?

Suncor conducts regular testing on its product. A destruction test (where the product is pull tested until it breaks) is generally conducted to determine the break load of an item. Once this break load is determined through a destruction test, the working load limit is determined.

Suncor uses a ratio of 5:1 (BL:WLL) for forged product and 4:1 (BL:WLL) for cast items and welded chain. For example: A Forged Chain Shackle that breaks 5,000 lbs. is assigned a Working Load Limit of 1,000 lbs. A Cast Swivel Eye Hook that breaks at 4,000 lbs. has a 1,000 lb. Working Load Limit. An Anchor Chain that breaks at 8,000 lbs. would be assigned a 2,000 lb. Working Load Limit.

What effect does temperature have on the working load limit of Chain?

Temperature does have an effect on the working load limit of chain while at a certain temperature. Refer to the chart below for further information.

the effect of temperature on stainless steel working load limits

How do I purchase Suncor Stainless chain?

All Suncor chain and chain accessories can be purchased through your local Suncor Stainless Authorized Dealer. Please contact us if you need assistance finding a dealer near you.

Can I buy stainless steel chain "by the foot"?  Is there a minimum I need to purchase?

Stainless chain is offered "by-the-foot", however there is a minimum order amount of $50.

Does Suncor offer stainless chain in "full barrel" quantities?

Yes. Full barrel quantities are offered to our customers in lengths ranging from 100 Feet to 1,000 Feet depending on the size and type of chain.

What is the warranty on Suncor Stainless product?

Suncor Stainless, Inc. warrants its products to be free of defects in material and workmanship under normal use and with normal maintenance for the lifetime of the product. This Limited Warranty extends only to the original retail purchaser and does not run to any subsequent purchaser.

If the product fails, we will repair the product or send you a new part free of charge, provided the product has been given reasonable care, has not been used for commercial service, and the damage has not resulted from improper installation, accident, negligence, misuse or from unauthorized alterations by the purchaser.

For complete warranty details including our return policy and disclaimer, please view our consumer warranty.

Are any components designed and manufactured to meet Federal & Military Specifications?

Suncor manufactures many of its products in accordance with Federal Specifications. If a particular product is designed to a certain fed spec or mil spec, you will see this clearly noted within the product page for the product. For more information on the Federal Specifications which apply to the various Suncor products, please refer to the tables below.

Federal Specification RR-C-271D, Type IVA (Anchor Shackles)
Type IVA stainless steel anchor shackle

Type IVA Class 1 Round Pin Anchor Shackle
Type IVA Class 2 Screw Pin Anchor Shackle
Type IVA Class 3 Safety Anchor Shackle

Federal Specification RR-C-271D, Type IVB (Chain Shackles)
Type IVB Chain Shackle

Type IVB Class 1 Round Pin Chain Shackle
Type IVB Class 2 Screw Pin Chain Shackle
Type IVB Class 3 Safety Chain Shackles

Military Specification MIL-F-1728OD, TYPE 1 (Nitronic Anchor Shackles)
Type 1 Shackle
MIL-F-17280D Type 1 Shackle

Military Specification MIL-F-1728OD, TYPE III (Eye & Eye Swivel)
Type III Eye Swivel
MIL-F-17280D Type 3 Eye & Eye Swivel

What is NACM?

The National Association of Chain Manufacturers (NACM) is an organization which has represented domestic manufacturers of welded and weldless chain since 1933. Its members (Suncor included) provide a wide range of chain products such as stainless steel chain, galvanized chain, decor chain, double loop chain, Grade 80 and Grade 100 chain, and tow chain. The NACM official website is a great resource for finding industry standard chain specifications. Most of the chain Suncor manufactures is in accordance with these NACM specification standards. NACM also offers documents covering properties and grades of welded (and weldless) stainless steel chain for marine, industrial and commercial use.