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TP316 Polishded Thin Wall 1 Inch 316 Stainless Steel Pipe Erw For Gas
316 vs 304
Because of its better corrosion resistance, the stainless 316 grade costs more. For applications that expose an alloy to chlorinated solutions and chlorides, including seawater, using this higher grade is especially recommended. It can add years to the life of components or equipment exposed to harsh and corrosive conditions, particularly if it involves exposure to salts. Yet for most applications, the 304 grade will work perfectly well. In summation, when looking at 304 vs. 316 stainless steel, for applications that require superior resistance to corrosion or water, use 316 stainless. For other applications, 304 stainless will work just fine.
To sum it up, 316 steel is worth the expense if you need superior corrosion resistance and your application contains water. If not, 304 steel will serve your needs just fine.
The magnet test is not a correct way to verify stainless steel.
Stainless steel is a common name for metal alloys that consist of 10.5% or more Chromium (Cr) and more than 50% Iron (Fe). Although it is called “Stainless” a better term for it is “highly stain resistant.” It is a darker metal. There are two process methods to make it bright, both are surface treatments.
316 Stainless Steel Pipe Specification
| Name | TP316 Polishded Thin Wall 1 Inch 316 Stainless Steel Pipe Erw For Gas |
| Items | 316L Stainless Steel Pipe |
| Standard | ASTM A554 |
| Material Grade | 316L:Ni10%,Cr16% |
| Outer Diameter | 1 inch |
| Thickness | 0.3mm |
| Length | 1m, or as customers' request |
| Tolerance | a) Outer Diameter: +/- 0.2mm |
| b) Thickness: +/- 0.03mm | |
| c) Length: +/- 5mm | |
| Surface | annealing,pickling |
| sandblasting | |
| Application | industry,exhausting,welding,furniture,window |
| Test | Squash test, extended test, water pressure test,heat treatment, NDT |
Elemental comparison of the different materials
| Chemical Composition of Material | Material | 201 | 316L | 304 |
| C | ≤0.15 | ≤0.035 | ≤0.08 | |
| Si | ≤1.00 | ≤1.00 | ≤1.00 | |
| Mn | 5.5-7.5 | 2 | ≤2.00 | |
| P | ≤0.06 | ≤0.045 | ≤0.045 | |
| S | ≤0.03 | ≤0.03 | ≤0.03 | |
| Cr | 16-18 | 16-18 | 18-20 | |
| Ni | 3.5-5.5 | 10-14 | 8-11 | |
| Mechanical Property | Material Item | 201 | 202 | |
| Tensile Strength | ≥535 | ≥520 | ||
| Yield Strength | ≥245 | ≥205 | ||
| Extension | ≥30% | ≥30% | ||
| Hardness (HV) | <253 | <253 |
