316 / 316L Stainless Steel Seamless Tubing
Product Introduction
Type 316/316L is a chromium nickel austenitic stainless steel containing molybdenum. The molybdenum addition enhances the corrosion resistance over that of 304/304L in halide environments as well as in reducing acids such as sulfuric and phosphoric acid. Type 316L can be dual certified as 316 when the composition meets the lower carbon limit of 316L and the slightly higher strength levels of 316. Type 316L should be specified for welded applications as the low carbon version eliminates chromium carbide precipitation and enhances the corrosion resistance in the as-welded condition.
Type 316/316L resists atmospheric corrosion as well as in moderately oxidizing environments. It also resists corrosion in marine atmospheres and has excellent resistance to intergranular corrosion in the as-welded condition. Type 316/316L has excellent strength and toughness at cryogenic temperatures. Type 316/316L is non-magnetic in the annealed condition but may become slightly magnetic as a result of severe cold working.
Grade 316L, the low carbon version of 316 and has very high immunity from sensitization (grain boundary carbide precipitation). It is extensively used in the oil and gas and chemical industries for its cost effective corrosion resistance and ease of fabrication. There is commonly no appreciable price difference between 316 and 316L stainless steel. The austenitic structure also gives these grades excellent toughness, even down to cryogenic temperatures. Compared to chromiumnickel austenitic stainless steels, 316L stainless steel offers higher creep, stress to rupture and tensile strength at elevated temperatures.
Product Specifications
ASTM A269, ASTM A213 / ASME SA213 (Seamless)
Comparison of Chemacal Composition
| Code | Standard | CHBMICAL COMPOSITION | |||||||||
| C | Si | Mn | P | S | Ni | Cr | Mo | OTHER | |||
| 316 | JIS | SUS 316 | 0.080 max | 1.00 max | 2.00 max | 0.040 max | 0.030 max | 10.00-14.00 | 16.00-18.00 | 2.00-3.00 | - |
| AISI | 316 | 0.080 max | 1.00 max | 2.00 max | 0.045 max | 0.030 max | 10,00-14.00 | 16,00-18.00 | 2.00-3.00 | - | |
| ASTM | TP 316 | 0.080 max | 0.75 max | 2.00 max | 0.040 max | 0.030 max | 11,00-14.00 | 16.00-18.00 | 2,00-3.00 | - | |
| DIN | X5CrNiMo1810 Nr.1,4301 |
0.070 max | 1.00 max | 2.00 max | 0.045 max | 0.030 max | 10.50-13.50 | 16,50-18.50 | 2.00-2.50 | - | |
| 316L | JIS | SUS 316L | 0.030 max | 1.00 max | 2.00 max | 0.040 max | 0.030 max | 12.00-16.00 | 16.00-18.00 | 2.00-3.00 | - |
| AISI | 316L | 0.030 max | 1.00 max | 2.00 max | 0.045 max | 0.030 max | 10,00-14.00 | 16,00-18.00 | 2.00-3.00 | - | |
| ASTM | TP 316L | 0.035 max | 0.75 max | 2.00 max | 0.040 max | 0.030 max | 10.00-15.00 | 16.00-18.00 | 2.00-3.00 | - | |
| DIN | X2CrNiMo1810 Nr.1,4404 |
0.030 max | 1.00 max | 2.00 max | 0.045 max | 0.030 max | 11.00-14.00 | 16,50-18,50 | 2.00-2.50 | - | |
| Mechanical Properties | |
| Yield Strength | 30 Ksi min |
| Tensile Strength | 75 Ksi min |
| Elongation(2" min) | 35% |
| Hardness(Rockwell B Scale) | 90 HRB max |
Size Tolerance
| O.D | O.D Toleracne | W.T Tolerance |
| Inch | mm | % |
| 1/8" | +0.08/-0 | +/-10 |
| 1/4" | +/-0.10 | +/-10 |
| Up to 1/2" | +/-0.13 | +/-15 |
| 1/2" to 1-1/2" , excl | +/-0.13 | +/-10 |
| 1-1/2" to 3-1/2" , excl | +/-0.25 | +/-10 |
| Note: The tolerance can be negotiated according to the customer's specific requirements | ||
| Maximum allowable pressure(unit: BAR) | ||||||||
| Wall Thickness(mm) | ||||||||
| 0.89 | 1.24 | 1.65 | 2.11 | 2.77 | 3.96 | 4.78 | ||
| O.D(mm) | 6.35 | 387 | 562 | 770 | 995 | |||
| 9.53 | 249 | 356 | 491 | 646 | 868 | |||
| 12.7 | 183 | 261 | 356 | 468 | 636 | |||
| 19.05 | 170 | 229 | 299 | 403 | ||||
| 25.4 | 126 | 169 | 219 | 294 | 436 | 540 | ||
| 31.8 | 134 | 173 | 231 | 340 | 418 | |||
| 38.1 | 111 | 143 | 190 | 279 | 342 | |||
| 50.8 | 83 | 106 | 141 | 205 | 251 | |||
Certificate Of Honor
ISO9001/2015 Standard
ISO 45001/2018 Standard
PED Certificate
TUV Hydrogen compatibility test certificate
| No. | Size(mm) | EP Tube(316L) Size Noted by ● | |
| O.D | Thk | ||
| BA Tube Inner surface roughness Ra0.35 | |||
| 1/4″ | 6.35 | 0.89 | ● |
| 6.35 | 1.00 | ● | |
| 3/8″ | 9.53 | 0.89 | ● |
| 9.53 | 1.00 | ||
| 1/2” | 12.70 | 0.89 | |
| 12.70 | 1.00 | ||
| 12.70 | 1.24 | ● | |
| 3/4” | 19.05 | 1.65 | ● |
| 1 | 25.40 | 1.65 | ● |
| BA Tube Inner surface roughness Ra0.6 | |||
| 1/8″ | 3.175 | 0.71 | |
| 1/4″ | 6.35 | 0.89 | |
| 3/8″ | 9.53 | 0.89 | |
| 9.53 | 1.00 | ||
| 9.53 | 1.24 | ||
| 9.53 | 1.65 | ||
| 9.53 | 2.11 | ||
| 9.53 | 3.18 | ||
| 1/2″ | 12.70 | 0.89 | |
| 12.70 | 1.00 | ||
| 12.70 | 1.24 | ||
| 12.70 | 1.65 | ||
| 12.70 | 2.11 | ||
| 5/8″ | 15.88 | 1.24 | |
| 15.88 | 1.65 | ||
| 3/4″ | 19.05 | 1.24 | |
| 19.05 | 1.65 | ||
| 19.05 | 2.11 | ||
| 1″ | 25.40 | 1.24 | |
| 25.40 | 1.65 | ||
| 25.40 | 2.11 | ||
| 1-1/4″ | 31.75 | 1.65 | ● |
| 1-1/2″ | 38.10 | 1.65 | ● |
| 2″ | 50.80 | 1.65 | ● |
| 10A | 17.30 | 1.20 | ● |
| 15A | 21.70 | 1.65 | ● |
| 20A | 27.20 | 1.65 | ● |
| 25A | 34.00 | 1.65 | ● |
| 32A | 42.70 | 1.65 | ● |
| 40A | 48.60 | 1.65 | ● |
| 50A | 60.50 | 1.65 | |
| 8.00 | 1.00 | ||
| 8.00 | 1.50 | ||
| 10.00 | 1.00 | ||
| 10.00 | 1.50 | ||
| 10.00 | 2.00 | ||
| 12.00 | 1.00 | ||
| 12.00 | 1.50 | ||
| 12.00 | 2.00 | ||
| 14.00 | 1.00 | ||
| 14.00 | 1.50 | ||
| 14.00 | 2.00 | ||
| 15.00 | 1.00 | ||
| 15.00 | 1.50 | ||
| 15.00 | 2.00 | ||
| 16.00 | 1.00 | ||
| 16.00 | 1.50 | ||
| 16.00 | 2.00 | ||
| 18.00 | 1.00 | ||
| 18.00 | 1.50 | ||
| 18.00 | 2.00 | ||
| 19.00 | 1.50 | ||
| 19.00 | 2.00 | ||
| 20.00 | 1.50 | ||
| 20.00 | 2.00 | ||
| 22.00 | 1.50 | ||
| 22.00 | 2.00 | ||
| 25.00 | 2.00 | ||
| 28.00 | 1.50 | ||
| BA Tube , No request about the inner surface roughness | |||
| 1/4″ | 6.35 | 0.89 | |
| 6.35 | 1.24 | ||
| 6.35 | 1.65 | ||
| 3/8″ | 9.53 | 0.89 | |
| 9.53 | 1.24 | ||
| 9.53 | 1.65 | ||
| 9.53 | 2.11 | ||
| 1/2″ | 12.70 | 0.89 | |
| 12.70 | 1.24 | ||
| 12.70 | 1.65 | ||
| 12.70 | 2.11 | ||
| 6.00 | 1.00 | ||
| 8.00 | 1.00 | ||
| 10.00 | 1.00 | ||
| 12.00 | 1.00 | ||
| 12.00 | 1.50 | ||