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Ss304 4000mm OD Flexible Large Diameter Stainless Steel Metal Pipe
Performance of stainless steel
Toughness
Toughness is the capacity of steel to yield plastically under very localized stress. A tough steel is resistant to cracking, making toughness a highly desirable quality used in engineering applications. The level of toughness is determined using a dynamic test. A sample bar is notched to localize the stress, then struck by a swinging pendulum. The energy absorbed in breaking the sample bar is measured by how much energy the pendulum loses. Tough metals absorb more energy, while brittle metals absorb less.
Ferritic
Ferritic stainless steels contain iron, carbon, and 10.5–18% chromium. They may contain other alloying elements such as molybdenum or aluminum, but usually in very small amounts. They have a body-centered-cubic (BCC) crystal structure—the same as pure iron at ambient temperature.
Due to their crystal structure, ferritic stainless steels are magnetic. Their relatively low carbon content produces correspondingly low strength. Other weaknesses of the ferritic type include poor weldability and reduced corrosion resistance. They are, however, desirable for engineering applications because of their superior toughness. Ferritic stainless steels are often used for vehicle exhaust pipes, fuel lines, and architectural trim.
Stainless Steel Metal Pipe Specification
| Name | Ss304 4000mm OD Flexible Large Diameter Stainless Steel Metal Pipe | |||
| Items | 304 | |||
| Standard | ASTM A554 | |||
| Material Grade | 304: Ni 8%, Cr 18% | |||
| Outer Diameter | 4000mm | |||
| Thickness | 3mm | |||
| Length | 5m, 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 |
