Duplex Steel Flanges
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Chemical Composition of SS Buttweld Fittings
| Grade |
C |
Mn |
Si |
P |
S |
Cr |
Mo |
Ni |
N |
Fe |
| S31803 |
0.030 max |
2.00 max |
1.00 max |
0.030 max |
0.020 max |
22.0 – 23.0 |
3.0 – 3.5 |
4.50 – 6.50 |
0.14 – 0.20 |
63.72 min |
| S32205 |
0.030 max |
2.00 max |
1.00 max |
0.030 max |
0.020 max |
21.0 – 23.0 |
2.50 – 3.50 |
4.50 – 6.50 |
0.8 – 0.20 |
63.54 min |
| Grade |
C |
Mn |
Si |
P |
S |
Cr |
Mo |
Ni |
N |
Fe |
| S32750 |
0.030 max |
1.20 max |
0.80 max |
0.035 max |
0.020 max |
24.00 – 26.00 |
3.00 – 5.00 |
6.00 – 8.00 |
0.24 – 0.32 |
58.095 min |
| S32760 |
0.05 max |
1.00 max |
1.00 max |
0.030 max |
0.010 max |
24.00 – 26.00 |
3.00 – 4.00 |
6.00 – 8.00 |
0.20 – 0.30 |
57.61 min |
Mechanical Properties of SS Butt weld Pipe Fittings
| Grades |
Density (g/cm 3) |
Density (lb/in 3) |
Melting Point (°C) |
Melting Point (°F) |
| S31803 / S32205 |
7.805 |
0.285 |
1420 – 1465 |
2588 – 2669 |
| Grades |
Density (g/cm 3) |
Density (lb/in 3) |
Melting Point (°C) |
Melting Point (°F) |
| S32750 / S32760 |
7.8 |
0.281 |
1350 |
2460 |
