Sanicro® 35 & 35-HS Special fasteners available now!

West Special Fasteners are proud to have a trusted working relationship with Alleima, working together to ensure OEM’s have a known partner for special fasteners, to support all project requirements for fasteners in Sanicro® 35 materials.

With technical collaboration at the heart of the project, West Special Fasteners can offer fasteners right now in both Sanicro® 35 and Sanicro® 35-HS, on reasonable lead times. Fasteners can even be hot-formed in either grade, using the latest in induction heating and modern technologies, saving end users money and delivering fasteners on quick lead times.

Having an understanding on how the material machines, ensuring you get the expected results on the finished fastener, along with supplying to the highest quality, are all vital aspects in meeting OEM expectations. Typical fasteners available in these grades include:

• Hexagon Head Bolts
• Socket Countersunk Screws
• Socket Capscrews
• Studbolts
• Hexagon Nuts
• Setscrews

And many other special fasteners and bespoke machined parts.

Where we expect this grade to fit within the market

Material for fasteners is selected for many reasons, including mechanical strength, hardness (NACE), corrosion resistance (including but not limited to; crevice, pitting, stress, and hydrogen induced stress corrosion – with the latter Sanicro® 35 & 35-HS being virtually immune to) and hydrogen embrittlement.

Adding cost, durability, and availability to the mix, gives the designer several considerations. Sanicro® 35 & 35-HS allow several of these considerations to be met as standard, giving solid comparisons, exceeding other grades of materials capabilities, and offering solutions to some common issues on certain grades. As Sanicro® 35 shows excellent resistant to hydrogen embrittlement since it has high austenitic phase stability.

Sanicro® 35 is not a precipitation-hardened grade which the latter may experience hydrogen embrittlement. Results, shown in constant load testing at 4°C in 3% NaCl at -1050 mVSCE, indicates that Sanicro® 35 is not prone to hydrogen embrittlement and is a viable option for subsea applications.

As a specialist manufacturer of fasteners in stainless steels and exotic alloys, we are excited to see a material that will only benefit OEM’s. Looking at common specific grades for Oil & Gas markets, we can offer the following comparisons on cost & strength:

Both Sanicro® 35 & 35-HS offer significant opportunity for usage for the Oil & Gas market. Costs below or in line with comparable materials, mechanical properties above or in line with comparable materials, added to improvements on critical areas such as corrosion, have highlighted Sanicro® 35 & 35-HS as grades of material that can change the market.

West Special Fasteners are proud to be part of this trusted relationship and look forward to this grade becoming a major material for the products we manufacture.

About Sanicro® 35

Sanicro®35 is a high-performance super-austenitic stainless steel alloy for use in demanding corrosive environments it offers exceptional corrosion resistance with a pitting resistance equivalent number (PREN) greater than 52. It’s high mechanical strength & durability make it suitable for industrial applications such as chemical processing, oil and gas, and biorefineries.

Sanicro® 35 Grades & Equivalents

UNS N08935
ASTM B649

Typical chemical analysis

Typical mechanical properties of Sanicro® 35

Impact results shown above, especially in Sanicro® 35-HS, are impressive in comparison to Super Duplex High Strength – which has difficulties @ -101°C.

Download metal data sheets