SAS ALLOYS- Specialised Alloys Services

 

SAS Alloys has long established relationships with major international producing mills. SAS Alloys can provide your material requirements from several international mills in Japan, South Korea and France. SPECIALIST in HEAT EXCHANGER REQUIREMENTS

300 Series Austenitic

SAS Alloys offers a wide range of Austenitic stainless steel grades in the largest range of thicknesses and widths.

Austenitic stainless steel plate comprises the most important class of the family of stainless steel plate because of its corrosion resistance, ease of fabrication, wide range of mechanical properties, and wide range of temperatures. Austenitic stainless steel plate is non-magnetic. When Nickel is added to stainless steel in sufficient amounts, the crystal structure changes to “Austenite”. The basic composition of 300 series Austenitic stainless steels is 18% Chromium and 8% Nickel. This enhances their corrosion resistance and modifies the structure from ferritic to Austenitic. Austenitic grades are the most commonly used stainless steels, accounting for more than 70% of production, they are not hardenable by heat treatment.

Martensitic

SAS Alloys provides a full range of Alloy 410, which is a basic, general purpose, magnetic grade, hardenable by quenching and tempering.

Martensitic stainless steel plate has a relatively high carbon content (0.1% – 1.2%) compared to other stainless steels. The Martensitic stainless steels are plain Chromium steels containing between 12% and 18% Chromium. These stainless steels can be heat treated to obtain high strength with good ductility. Martensitic stainless steel plate has very high hardenability. When only limited corrosion resistance or resistance to moderately elevated temperature scaling is required, Martensitic stainless steel plate can be used in the annealed condition, but its highest corrosion resistance is attained in the hardened and stress relieved (low temperature tempered) condition.

Duplex/Super duplex

SAS Alloys can supply Duplex 2304, 2205, and 2507 stainless steel plate products available to satisfy your strict corrosion and high strength requirements.

Duplex stainless steel is stainless steel plate containing relatively high Chromium levels (between 18% and 28%) and moderate amounts of Nickel (between 4.5% and 8%). The high corrosion resistance and the excellent mechanical properties of duplex stainless steels can be explained by their chemical composition and balanced (“duplex”) microstructure of approximately equivalent volume fractions of ferrite and Austenite. Alloys 2304 and 2205 are the most common grades. An outstanding feature of this stainless steel plate is its resistance to chloride stress corrosion cracking.

“Super” duplex grades have enhanced pitting and crevice corrosion resistance compared with the ordinary Austenitic or duplex types. This is due to the further additions of chromium, molybdenum, and nitrogen to these grades. Alloy 2507 is the most common “super” duplex grade.