TP316 / TP316L
Material
- ◎ TP316, UNS S31600, 1.4401, X5CrNiMo17-12-2
- ◎ TP316L, UNS S31603, 1.4404, X2CrNiMo17-12-2
Overview
316 and 316L are austenitic chromium-nickel stainless steels containing molybdenum. This addition increases general corrosion resistance, improves resistance to pitting from chloride ion solutions, and provides increased strength at elevated temperatures. Corrosion resistance is improved, particularly against sulfuric, hydrochloric, acetic, formic, and tartaric acids.
Characteristics
316 and 316L products are characterized by resistance to high temperatures, high plasticity, ductility, and relatively good ductility. They are suitable for compression, cold and tensile hardening to produce springs and spring elements from strips or wires. The materials show non-magnetic properties in soft condition, relatively good mechanical properties in cryogenic temperatures and good weldability not requiring additional heat treatment processes. It is also important to note the relatively low mechanical properties, which are not conducive to mechanical applications, and the difficult machinability of steel.
Typical application
- ◎ Process engineering
- ◎ Control lines
- ◎ High Performance Liquid Chromatography (HPLC)
- ◎ Heat Exchangers
- ◎ Condensers
- ◎ Semiconductors
- ◎ Medical implants (including Pins, screws and implants)
Chemical composition
TP316 as per ASTM A213
| wt% | C | Si | Mn | P | S | Cr | Ni | Mo |
|---|---|---|---|---|---|---|---|---|
| ≥ | 16.00 | 10.00 | 2.00 | |||||
| ≤ | 0.08 | 1.00 | 2.00 | 0.045 | 0.030 | 18.00 | 14.00 | 3.00 |
TP316L as per ASTM A213
| wt% | C | Si | Mn | P | S | Cr | Ni | Mo |
|---|---|---|---|---|---|---|---|---|
| ≥ | 16.00 | 10.00 | 2.00 | |||||
| ≤ | 0.035 | 1.00 | 2.00 | 0.045 | 0.030 | 18.00 | 14.00 | 3.00 |
Mechanical property
| Temper | TP316 | TP316L | ||
|---|---|---|---|---|
| Tensile Rm | 75 | ksi (min) | 70 | ksi (min) |
| Tensile Rm | 515 | MPa (min) | 485 | MPa (min) |
| Rp 0.2% Yield | 30 | ksi (min) | 25 | ksi (min) |
| Rp 0.2% Yield | 205 | MPa (min) | 170 | MPa (min) |
| Elongation (2″ or 4D gl) | 35 | % (min) | 35 | % (min) |
Heat treatment and hardness
Solution treatment 1040°C (1900°F), water or other rapid cool.
Hardness: max. 192 HBW or 200 HV or 90 HRB
Available Process
- ◎ Cold worked
- ◎ Cold worked and bright annealed
- ◎ Cold worked, annealed and pickled
- ◎ Cold worked, polished (MP, EP etc.)
- ◎ Cold worked, bright annealed, polished (MP, EP etc.)
Product forms
Capillary tube
OD 0.08 ~ 6.0 mm
WT 0.015 ~ 1.5 mm
Thin wall & Ultra thin wall seamless tube
OD 6.0 ~ 80.0 mm
WT 0.05 ~ 4.5 mm
Micro ID and heavy wall seamless tube
OD 3.0 ~ 50.0 mm
ID 0.30 ~ 5.0 mm
Precision seamless tube
OD 6.0 ~ 89 mm
WT 0.50 ~ 9.0 mm
Profiled seamless tube
Build to drawing
Build to specification
Precision conic seamless tube
Bigger end: OD3.0 – 28.0mm
Smaller end: OD2.5 – 25.0mm
WT: 0.25 – 1.50mm
HP / UHP BA+ tube
OD 1.0 ~ 76 mm
Smaller end: OD2.5 – 25.0mm
Bourdon tube
Y40, Y50, Y60, Y70, Y100, Y150
Service
- ◎ Precision cutting
- ◎ Tube surface treatment, like ID surface super mirror polishing, best level could reach Ra0.0015um
- ◎ Tube deep processing, like coiling, bending, end forming, body forming, laser processing, various needles processing, built to drawing and sample, etc.