ASTM A790 / A789 UNS S31803 Pipe / Tube

Description

ASTM A790 ASTM A789 UNS S31803 Duplex Pipe Tube
Duplex 2205 Stainless Steel Pipe
ASTM A790 Uns s31803 / ASTM A789 Uns S31803 duplex pipe tube is a stainless steel tube with good chloride stress resistance, Uns s31803 contains 21% Chrome 4.5% nickel and 2.5% molybdenum.
ASTM A790 UNS S31803 duplex pipe tube products scope
ASTM A790 UNS S31803 Duplex stainless steel pipe
ASTM A790 UNS S31803 Duplex pipe seamless
ASTM A790 UNS S31803 Duplex tube seamless
ASTM A790 UNS S31803 Duplex pipe welded / welding
ASTM A790 UNS S31803 Duplex tube welded / welding
ASTM A789 UNS S31803 Duplex pipe welded / welding
ASTM A789 UNS S31803 Duplex tube welded / welding
31803 Duplex pipe fittings
31803 Duplex pipe elbow
31803 Duplex pipe reducer
31803 Duplex pipe tee
31803 Duplex pipe cap
31803 Duplex pipe flange
Main components: carbon (C)≤0.03, manganese (Mn)≤1.2, nickel (Ni) 6.0～8.0, silicon (Si)≤0.8, chromium (Cr) 24.0～26.0, copper (Cu) ≤0.5, molybdenum (Mo) )3.0～5.0, Nitrogen (N) 0.24～0.32
Physical Properties: 2205 Duplex Steel Density: 7.98g/cm3, Melting Point: 1300-1390 ℃, Magnetic Properties: None
Heat treatment: heat preservation between 1000-1050 ℃ for 1-2 hours, rapid air cooling or water cooling.
ASTM A790 UNS S31803 Pipe & tube Mechanical properties: Tensile strength: σb≥795Mpa, solid solution yield strength σb≥550Mpa: Elongation: δ≥15%, hardness ≤310 (HB)
ASTM A790 UNS S31803 PIPE & TUBE (foreign name:UNS S31803 stainless steel pipe) is an ultra-low carbon duplex stainless acid-resistant steel with excellent resistance to pitting and crevice corrosion. At the same time, nitrogen is a strong element that forms and stabilizes austenite. Even if it is welded or heated at high temperature, it can ensure that a certain amount of austenite exists in the structure. Single-phase ferrite. The two-phase ratio is not sensitive to changes in heating temperature.

ASTM A789 Is Standard for Seamless and Welded Ferritic / Austenitic Stainless Steel Tubing