316L 4 Inch Stainless Steel Pipe
(Outer diameter (mm) - thickness (mm)) * Thickness (mm) *0.02507* Length (M) = weight (KG) 316 and 316L both use this formula, 304 and 304L just change 0.02507 to 0.02491
316L 4 inch stainless steel pipe
Why does the 316L stainless steel tube appear dark red powder on the inner and outer surfaces of the tube wall after heating to 600 degrees?
Why heat stainless steel 316L to 600 degrees? Sensitized? The heating of stainless steel at 460-800 degrees is a bad thing and should be avoided as far as possible unless there is solid solution treatment behind it.
After the surface of stainless steel is oxidized, if the underlying layer is oxidized, the color will be blue; Medium thickness oxidation is red; It's black if it's deeply oxidized. Therefore, your heating has caused moderate to deep oxidation on the inner and outer surfaces of the steel pipe, which is serious oxidation, and the oxide layer of the underlying layer is not firmly bonded, resulting in powder.
astm a312 316l Chemical Composition
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | |
| 316 | min. | – | – | – | – | 16.0 | 2.0-3.0 | 10.0 | – | |
| max. | 0.035 | 2.0 | 0.75 | 0.045 | 0.030 | 18.0 | 14.0 | – | ||
| 316L | min. | – | – | – | – | – | 16.0 | 2.0-3.0 | 10.0 | – |
| max. | 0.035 | 2.0 | 0.75 | 0.045 | 0.030 | 18.0 | 14.0 | – | ||
astm a312 tp316 316lMechanical Properties
| Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness | |
| Rockwell B (HR B) max | Brinell (HB) max | ||||
| 316 | 515 | 205 | 40 | 95 | 217 |
| 316L | 485 | 170 | 40 | 95 | 217 |
6 inch 316 stainless steel pipe Physical Properties
| Grade | Density (kg/m3) | Elastic Modulus (GPa) | Mean Coefficient of Thermal Expansion (m/m/0C) | Thermal Conductivity (W/m.K) | Specific Heat 0-1000C (J/kg.K) | Electrical Resistivity (n.m) | |||
| 0-1000C | 0-3150C | 0-5380C | at 1000C | at 5000C | |||||
| 316 | 8000 | 193 | 15.9 | 16.2 | 17.5 | 16.3 | 21.5 | 500 | 740 |
| 316L | 8000 | 193 | 15.9 | 16.2 | 17.5 | 16.3 | 21.5 | 500 | 740 |
Equivalent Grades for sa213 tp316
| STANDARD | WERKSTOFF NR. | UNS | JIS | BS | GOST | AFNOR | EN |
| SS 316 | 1.4401 / 1.4436 | S31600 | SUS 316 | 316S31 / 316S33 | – | Z7CND17‐11‐02 | X5CrNiMo17-12-2 / X3CrNiMo17-13-3 |
| SS 316L | 1.4404 / 1.4435 | S31603 | SUS 316L | 316S11 / 316S13 | 03Ch17N14M3 / 03Ch17N14M2 | Z3CND17‐11‐02 / Z3CND18‐14‐03 | X2CrNiMo17-12-2 / X2CrNiMo18-14-3 |
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