Stainless Steel Flange ASTM A182/A240 309/309S
Specification:
| Dimension Std | ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, AWWA, Custom Drawings |
|---|---|
| Standard | ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges etc. |
| Specification | ASTM A182 / A240 & ASME SA182 / SA240 |
| Size | 1/2″ (15 NB) TO 48″ (1200 NB) |
| Class | 150#, 300#, 600#, 900#, 1500#, 2500#, etc |
| Pressure | DIN PN6, PN10, PN16, PN25, PN40, PN64, PN100, PN160, etc |
SS 309 – Equivalent Grades
| STANDARD | SS 309 |
| WERKSTOFF NR. | 1.4828 |
| UNS | S30900 |
Types of Flanges :
| Stainless Steel Blind Flanges | Stainless Steel Reducing Flanges | Stainless Steel Ring Type Flanges |
| Stainless Steel Spectacle Flanges | Stainless Steel Weld Neck Flanges | Stainless Steel High Hub Flanges |
| Stainless Steel Threaded Flanges | Stainless Steel Lap Joint Flanges | Stainless Steel Long weld Neck Flanges |
| Stainless Steel Slip-On Flanges | Stainless Steel Socket Weld Flanges | Stainless Steel Orifice Flanges |
Chemical Composition :
| SS 309 | SS 310 | SS 310S | |
|---|---|---|---|
| Ni | 12 – 15 | 19 – 22 | 19 – 22 |
| Cr | 22 – 24 | 24 – 26 | 24 – 26 |
| C | 0.2 max | 0.25 max | 0.08 max |
| Fe | Balance | ||
| Mn | 2 max | 2 max | 2 max |
| Si | 1.0 max | 1.50 max | 1.50 max |
| S | 0.03 max | 0.03 max | 0.03 max |
| P | 0.045 max | 0.045 max | 0.045 max |
Mechanical Properties :
| Grade | Tensile Strength ksi (min) | Yield Strength 0.2% ksi (min) | Elongation % | Hardness (Brinell) MAX |
|---|---|---|---|---|
| 309 | 40 | 30 | 40 | 217 |
Physical Properties :
| Grade | Density lbm/in3 | Thermal Conductivity (BTU/h ft. °F) | Electrical Resistivity (in x 10-6) | Modulus of Elasticity (psi x 106 | Coefficient of Thermal Expansion (in/in)/ °F x 10-6 | Specific Heat (BTU/lb/ °F) | Melting Range (°F) |
|---|---|---|---|---|---|---|---|
| 309 | at 68°F: 0.285 | 9.0 at 32- 212°F | 30.7 at 68°F | 28.5 | 8.28 at 32 – 212°F | 0.1200 at 68°F to 212°F | 2500-2590 |










