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| Alloy | Ni | Cr | C | Si | Mn | N | S | P | Mo | |
|---|---|---|---|---|---|---|---|---|---|---|
| UNS S31803 (Duplex 2205) | Minimum | 4.5 | 21.0 | - | - | - | 0.08 | - | - | 2.5 |
| Maximum | 6.5 | 23.0 | 0.030 | 1.00 | 2.00 | 0.20 | 0.020 | 0.030 | 3.5 | |
| UNS S32205 (Duplex 2205) | Minimum | 4.5 | 22.0 | - | - | - | 0.14 | - | - | 3.0 |
| Maximum | 6.5 | 23.0 | 0.030 | 1.00 | 2.00 | 0.20 | 0.020 | 0.030 | 3.5 |
Specification of UNS S32205 and S31803
| UNS S31803 (Duplex 2205) | UNS S32205 (Duplex 2205) | |
|---|---|---|
| Forging and Flange | F51, A182 | F60, A182 |
| Plate, Sheet and Strip | A240/ SA 240 | A240/ SA 240 |
| Pipe | A790/ SA 790 | A790/ SA 790 |
| EFW Pipe | A928 | A928 |
| Tube | A789/ SA 789 | A789/ SA 789 |
| Bar and Rod | A276/ A479 | A276/ A479 |
| Fittings | ASTM A815 | ASTM A815 |
| Casting and Valve | ASTM A988 | ASTM A988 |
| UNS | WNR | Europe - EURONORM | Sweeden | AFNOR | Japan | Grade |
|---|---|---|---|---|---|---|
| S32205 and S31803 | 1.4462 | X2CrNiMoN 22.5.3 | 2377 | Z3 CrNi 22.05 AZ | SUS 329J3L | 2205 |
Mechanical Properties of Duplex S32205 and S31803 material
| Duplex Grade | Tensile Strength in ksi (minimum) | Hardness (HB) MAX | Yield Stress 0.2% ksi (minimum) | Elongation % |
|---|---|---|---|---|
| 2205 | 90 | 217 | 65 | 25 |
Applications of UNS S31803 and S32205 Material
DSS UNS S31803 and S32205 Physical Properties
| Density | Modulus of Elasticity | Thermal Expansion | Electrical Resistivity | Thermal Conductivity |
|---|---|---|---|---|
| 7.805 g/cm3 | 200 Gpa | 13.7*10-6 K | 0.085*10-6 Ω.m | 19.0 W/m.k |
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