TP316/316L ASTM A213 ASME SA213 Stainless Steel Seamless Tube
316 316L (2% to 3% Mo) is the most widely used molybdenum-containing stainless steel. It is designated as a tank, pipe and heat exchanger material for food processing and pharmaceutical production.
TP316 is the standard molybdenum-bearing grade, second in importance to 304 amongst the austenitic stainless steels. The molybdenum gives 316 better overall corrosion resistant properties than Grade 304, particularly higher resistance to pitting and crevice corrosion in chloride environments. It has excellent forming and welding characteristics. It is readily brake or roll formed into a variety of parts for applications in the industrial, architectural, and transportation fields. Grade 316 also has outstanding welding characteristics. Post-weld annealing is not required when welding thin sections.
TP316 is an improved version of TP304, with the addition of molybdenum and a slightly higher nickel content.The molybdenum makes the steel more resistant to pitting and crevice corrosion in chloride-contaminated media, sea water and acetic acid vapours. The lower rate of general corrosion in mildly corrosive environments gives the steel good atmospheric corrosion resistance in polluted marine atmospheres.
GradeTP316L, the low carbon version of 316 and is immune from sensitisation (grain boundary carbide precipitation). While
Grade TP316H, with its higher carbon content has application at elevated temperatures.
ASTM A213 Standard Specification for Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes
Chemical Composition of ASTM A213 Grade TP316L Cold Drawn Seamless Tube
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | |
|---|---|---|---|---|---|---|---|---|---|---|
| 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 | – | ||
A213 TP316L SA 213 Grade TP316L Mechanical Properties
| Material | Heat | Yield Strength | Tensile Strength | Temperure | Elongation %, Min |
|---|---|---|---|---|---|
| Treatment | Ksi (MPa), Min. | Ksi (MPa), Min. | Min.º F(º C) | ||
| TP316L | Solution | 25(170) | 70(485) | 1900 (1040) | 35 |
Physical Properties of ASTM A213 Grade TP316L Tubes
| Alloy | UNS | Spec. | Modulus of Elasticity (x106 psi) | Density Specific Gravity kg/dm³ | Thermal Cond uctivity (BTU-in/ft2-h-°F) | Mean Coeff icient of Thermal Expansion (IN./IN ./°F x 10-6) |
|---|---|---|---|---|---|---|
| 316L | S31603 | A213> | 28.0 | 7.98 | 116 | 9.2 |
ASTM A213 Tp316L Stainless Steel Tubes Outside Diameter and Wall Thickness Tolerance
| OD, mm | OD Tolerance |
|---|---|
| < 25.4 | +/- 0.10 |
| 25.4 – <= 38.1 | +/- 0.15 |
| > 38.1 -< 50.8 | +/- 0.20 |
| 50.8 -< 63.5 | +/- 0.25 |
| 63.5 -< 76.2 | +/- 0.30 |
| 76.2 – <= 101.6 | +/- 0.38 |
| > 101.6 – <= 190.5 | +0.38/-0.64 |
| > 190.5 – <= 228.6 | +0.38/-1.14 |
| OD, mm | WT Tolerance |
|---|---|
| <= 38.1 | +20%/-0 |
| > 38.1 | +22%/-0 |
- Size: 1/2″ – 12″ OD, Guage: 25 SWG – 10 SWG
- OD: 6.35 to 114.3 mm O.D
- Thickness : 0.8 – 12.7 mm
- Length: up to 26 Meters
- 1/2″ NB/3/4″ NB /1″ NB/1-1/4″ /2″ /2-1/2/3″ NB/3-1/2″/4″ NB/5″ NB/6″ NB/8″ NB /10″ NB /12″ NB
- in Thickness Schedule 10, Schedule 40, Schedule 80, Schedule 160, Schedule XXS
- Material :ASTM A213 Tp316/TP316L
