A Material Difference
The Swagelok Tube Fitting is made of high quality raw materials for superior performance. Swagelok places higher demands on the raw material for 316 stainless steel than the standard requires for corrosion resistance and ductility.
For many years, Swagelok has maintained chromium content in its fitting at a minimum of 17% (ASTM requires 16 - 18%) and nickel at a minimum of 12% (ASTM requires 10 to 14%).
1. Swagelok's Stainless Steel – ASTM requires 16-18% chromium and 10-14% nickel. Swagelok has maintained chromium content in its fittings at a minimum of 17% and nickel at a minimum of 12% for many years.
2. Quality Barstock – We place multiple controls on procurement of 316 stainless steel from our approved mills, from its elevated alloy chemistry to the inspection steps used to validate it to ensure uniform manufacturability when making our tube fittings.
3. Chloride Stress Corrosion Cracking (CSCC) in 316 Stainless Steel – CSCC occurs where chloride concentrations and stress levels are present. We have performed extensive CSCC testing on Swagelok fittings with exceptional results: Alloy 316 stainless steel nuts tested (Swagelok and eight other brands): None of the Swagelok nuts cracked or leaked. 39% of the other nuts cracked (at least one from each brand) and 2.7% leaked
4. Alloys and Corrosion - Swagelok offers a wide range of alloys and works closely with customers to solve their needs for fittings with enhanced chemical and corrosion resistance.
5. Engineered Combinations - Swagelok can engineer a cost-efficient and corrosion-resistant solution for installations exposed to seawater.
FROM THE MELT TO MACHINING, WE NEVER COMPROMISE ON QUALITY.
For optimal performance, Swagelok tube fittings:
- Take advantage of a stainless steel chemistry
- Are made from only high-quality raw materials
- Provide superior Chloride Stress Corrosion Cracking (CSCC) resistance
- Are offered in a wide range of alloys to combat corrosion
- Can be used in engineered combinations
Learn more about how Swagelok's raw materials give you a competitive advantage - contact us.