Consistent quality of heavy duty exterior door hinges across all conditions is always a must. To that end, a strictly adhere to ANSI standards by crafting all hinges with stainless steel to ensure corrosion resistance, as well as durability, longevity, and functionality. Stainless steel hinges tend to cost more, however, they are much more reliable, particularly in rugged environments. Heavy-duty 304 and 316 stainless steels, like the ones we use on our hinges at Waterson, are much more weather resistant and less affected by chemical exposure due to their chromium, nickel, and molybdenum elemental properties.

High Quality Stainless Steel

Due to its numerous properties and, specifically, its corrosion resistance, stainless steel is used for many commercial and residential applications. High-quality stainless steels (ie. 304 & 316) are those with a chromium content of approximately 18.0%. The higher the chromium content in addition to other alloys like nickel and molybdenum, the greater the corrosion resistance.

Type 304 Type 316
Carbon 0.08% max. 0.08% max.
Manganese 2.00% max. 2.00% max.
Phosphorus 0.045% max. 0.045% max.
Sulfur 0.030% max. 0.030% max.
Silicon 1.00% max. 1.00% max.
Chromium 18.00-20.00 16.00-18.00
Nickel 8.00-10.50% 10.00-14.00
Molybdenum 2.00-3.00%

304 & 316

304 and 316 stainless steels, also known as CF8 and CF8M respectively are the industry standard for high-quality stainless steel. The key components in these alloys are chromium and nickel. However, unlike CF8, CF8M contains 2% to 3% molybdenum, so CF8M tends to cost more. Nevertheless, through the investment casting process, Waterson is able to ensure that the required chemical composition is accurate and in accordance with acceptable ratio guidelines. In addition, we record specific batch ratios, which allows for accurate hinge traceability.

Deep dive in Waterson weatherproof hinges here.

Verifying Quality

Waterson stainless steel heavy duty exterior door hinges go beyond standard salt tests by performing at a high level in rugged seaside commercial environments. A common stainless steel quality verification procedure is to conduct a salt spray test according to ASTM B117, which Waterson easily satisfies the A156.7 standard for over 200 hours in a 5% salt concentration.

Furthermore, Waterson has a proven track record of performing reliably in commercial seaside exterior applications for over 5 years. As manufacturers, we control the investment casting process. This ensures that all Waterson stainless steel heavy duty exterior door hinges maintain a consistent and stable ratio in accordance with high-quality 304 and 316 standards.

heavy duty exterior door hinges stainless steel

Stainless Steel Highlights

  • 304 is recommended for general outdoor use
  • 316 is recommended for harsh environments
  • 304 and 316 material ratio varies by only 2-4%
  • Hinge traceability ensures high-quality material
  • Waterson stainless steel outperforms standard salt tests with over 200 hours in use and a 5% salt concentration.
  • In-house investment casting ensures accurate material composition
  • Optimal product performance achieved through rigorous material testing

Waterson Heavy Duty Exterior Door Hinges

Waterson Closer Hinge combine an overhead closer and hinge into one attractive component with optional hold-open and door stop features. These hinges are ideal for commercial openings, gates, and glass doors. These closer hinges are easily installed and adjusted to comply with ADA & ICC A117.1 requirements for opening force and to assure quiet, secure closing. Made with stainless steel, Waterson closer hinges meet NFPA 80 and are UL 3-hour fire-rated, as well as being one of the best door hinges for both interior and all-weather exterior openings. See all our features. 

Request For Information

Please note that Waterson Closer Hinges start from a size of 4″x4″. If you’re in need of smaller self-closing hinges, we’d recommend checking out some other resources! Also, we only provide single acting closer hinges. Thank you.

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