409L Stainless Steel tube Specification
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Stainless Steel SUS 904L Tube Equivalent Grades
| Country or Region | National Implementation Standard(s) | Common Grade(s) |
|---|---|---|
| United States | ASTM A268 | ASTM A268 TP409L |
| European Union (EU) | EN 10088-1 | EN 1.4512 (X2CrTi12) |
| Japan | JIS G3459 | SUS 409L |
| China | GB/T 14976 | GB/T 14976 00Cr11Ti |
| India | IS 6911 | - |
TP409L stainless steel tube Chemical Structure
| Element | Composition Range (Weight %) |
|---|---|
| Chromium (Cr) | 10.5 - 12.5 |
| Titanium (Ti) | 0.3 - 0.5 |
| Carbon (C) | 0.03 max |
| Manganese (Mn) | 1.00 max |
| Silicon (Si) | 1.00 max |
| Phosphorus (P) | 0.045 max |
| Sulfur (S) | 0.03 max |
| Nickel (Ni) | 0.5 max |
EN 1.4512 Stainless Steel tube Properties Table
| Property | Value |
|---|---|
| Tensile Strength (Ultimate) | 380 - 550 MPa (55,100 - 79,800 psi) |
| Tensile Strength (Yield) | 170 - 310 MPa (24,700 - 45,000 psi) |
| Elongation at Break | 20% min |
| Modulus of Elasticity | 200 GPa (29,000 ksi) |
| Poisson's Ratio | 0.29 |
| Hardness (Brinell, HB) | 88 max (annealed condition) |
SUS 409L stainless steel tube tolerance chart
| Dimension | Manufacturing Tolerance |
|---|---|
| Outside Diameter (OD) | ±0.005 inches (±0.13 mm) or as per applicable standard |
| Wall Thickness | As specified by the standard, typically with an allowable tolerance of ±10% of the nominal wall thickness |
| Length | Typically ±1/8 inch (±3.2 mm) for cut lengths, but it can vary depending on the manufacturing method and standard |
| Straightness | Depending on the standard, pipes are expected to be reasonably straight, with some permissible deviation |
| Ovality | Often specified as a percentage of the OD, e.g., ≤1% |
| Surface Finish | As per the applicable standard, often specified in terms of roughness (e.g., Ra ≤ 0.8 μm) |
| Roundness | Typically specified as a maximum deviation from a perfect circle, e.g., ≤1% of OD |
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