Stainless Steel 317/317L Buttweld Fittings Specifications
| Grade | SS 317(UNS S31700) SS 317L (UNS S31703) |
|---|---|
| Werkstoff Nr | 317 / 1.4449 317L / 1.4438 |
| Dimension Std. | ASME/ANSI B16.9, ASME B16.28, MSS-SP-43 |
| Specification | ASTM A403 / ASME SA403 |
| Size | ½” NB – 48” NB |
| Thickness | SCH 10 – SCH XXS |
| Type | Seamless / ERW / Welded / Fabricated |
Types of Buttweld Fittings
| Stainless Steel Reducers | Stainless Steel Concentric Reducers | Stainless Steel Tees |
| Stainless Steel Weldolet | Stainless Steel Short Stub End | Stainless Steel Eccentric Reducers |
| Stainless Steel Elbows | Stainless Steel 3D Elbow | Stainless Steel Lap Joint Stub End |
| Stainless Steel End Caps | Stainless Steel 5D Elbow | Stainless Steel 180° SR Return Bends |
| Stainless Steel Elbows | Stainless Steel Short Radius Elbow | Stainless Steel 45° Elbows |
| Stainless Steel Reducing Elbow | Stainless Steel Long Radius Elbow | Stainless Steel 180° LR Return Bends |
| Stainless Steel 45° Elbows | Stainless Steel Equal Tee | Stainless Steel UnEqual Tee |
| Stainless Steel Reducing Tee | Stainless Steel 1D Elbow | Stainless Steel 1.5D Elbow |
| Stainless Steel Long Stub Ends | Stainless Steel 2D Elbow | Stainless Steel 6D Elbow |
Chemical Compositions of SS 317/317L Buttweld Fittings
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N |
|---|---|---|---|---|---|---|---|---|---|
| 317 | 0.08 max | 2 max | 1 max | 0.040 max | 0.03 max | 18 – 20 | 3 – 4 | 11 – 14 | - |
| 317L | 0.035 max | 2 max | 1 max | 0.040 max | 0.03 max | 18 – 20 | 3 – 4 | 11 – 15 | - |
Mechanical Properties of SS 317/317L Buttweld Fittings
| Density | 8.0 g/cm3 |
|---|---|
| Melting Point | 1454 °C (2650 °F) |
| Tensile Strength | Psi – 75000 , MPa – 515 |
| Yield Strength (0.2%Offset) | Psi – 30000 , MPa – 205 |
| Elongation | 35 % |
Physical Properties of SS 317/317L Buttweld Fittings
|
Physical Properties (Room Temperature)
|
||
|---|---|---|
|
Specific Heat (0-100°C)
|
500
|
J.kg-1.°K-1
|
|
Thermal Conductivity
|
14.6
|
W.m -1.°K-1
|
|
Thermal Expansion
|
16.5
|
mm/m/°C
|
|
Modulus Elasticity
|
193
|
GPa
|
|
Electrical Resistivity
|
7.4
|
μohm/cm
|
|
Density
|
7.99
|
g/cm3
|
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