Categoria: | Duplex/Superduplex | ||||
---|---|---|---|---|---|
ACI/CAST GRADE |
CD3MN, 4A | ||||
CAST ASTM | A890, A995 | ||||
CAST EN/DIN | 1.4470 GX2CrNiMoN22-5 | ||||
CAST UNS | J92205 | ||||
WROUGHT UNS |
S31803 | ||||
WROUGHT GRADE |
SAF 2205, F51 | ||||
CHEMICAL COMPOSITION (wt%, TYPICAL VALUES) | |||||
C | <0.03 | ||||
Cr | 22.0 | ||||
Ni | 5.5 | ||||
Mo | 3.0 | ||||
Other | 0.18N | ||||
PREn | >34 | ||||
CASTINGS MINIMUM MECHANICAL PROPERTIES (AT 20°C, UNLESS OTHERWISE SPECIFIED) | |||||
Rp0.2[MPa] | 415 | ||||
Rm [MPa] | 620 | ||||
A % | 25 | ||||
Hardness [HB] | 200-260 | ||||
Impact [J] | 140 | ||||
PHYSICAL PROPERTIES (AT 20°C, UNLESS OTHERWISE SPECIFIED) | |||||
Microstructure | Austenoferritic | ||||
ρ [kg/dm3] | 8.00 | ||||
α [μm/m∙K] (20 – 100 °C) | 15 | ||||
K [W/m∙K] | 16.8 | ||||
Cp [J/kg∙K] | 447 | ||||
Melting ΔT [°C] | 1385-1455 | ||||
WORKING CONDITIONS / FABRICATION | |||||
Heat Treatment | Solution Annealing | ||||
Weldability | Excellent | ||||
Machining | 67 | ||||
Patternmaker’s Shrinkage [%] | 2.3 |
APPLICATIONS/ENVIRONMENTS/DESIGN CONSIDERATIONS |
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Chemical and petrolchemical indusrty, environments containing chlorides, offshore and onshore applications, extraction of oil and gas from sour wells. The high strength of 2205 DSS makes the material an attractive alternative to the austenitic steels in structures subjected to heavy loads. |
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