ASME SA213 316H ASTM A213 TP316H Stainless Steel Tubes and Pipes
Guanyu Tube is specialized manufacturer of ASME SA213 TP316H / ASTM A213 TP316H Stainless Steel Seamless Tubes, ASTM A312 ASME SA 312 TP316H Stainless Steel Seamless Pipe, EN 10216-5 1.4919 Stainless Steel Tubes in China. 316H stainless steel is a variation of the 16% chromium – 10 -14% nickel austenitic Alloy 316, in which the carbon content is controlled to a range of 0.04% – 0.10% (according to ASME SA213) to provide improved high temperature strength to parts exposed to temperatures in 610 °C [1130°F] .
ASME SA213 TP316H Stainless Steel Tubes Properties and Character
Unlike 316L, TP316H has a higher carbon content making the steel more suitable for use in applications where elevated temperatures are present. It is an Austenitic chromium nickel molybdenum steel alloy and the greater carbon content delivers an increased tensile strength and yield strength. The material is recommended for use in ASME pressure vessel in working service 610 °C [1130°F] due to the grade’s heat resistant properties.
316H has greater short term and long term creep strength than 316L at temperature up to 500 °C, and 316H is more resistant to sensitization than 316L. 316H is required in such applications.
TP316H Stainless Steel Tubes and Pipes Application
Alloy 316H is most commonly used in petroleum refineries. It is also in Stainless Steel Reheater Tubes and Superheater Tubes for Boiler, heat exchanger tubes, condensers tubes, pipelines, cooling towers, steam exhausts, and electric generation plants. It will also be found in fertilizer and chemical plants.
What does the H mean?
H-grades have 0.04 – 0.10% carbon content. H-grades are increased tensile strength and yield strength. H-grade often have slightly Higher (typically 30MPa less) minimum tensile strength and yield strength than standard stainless steel.
ASME SA 213 TP316H ASTM A312 TP316H EN 10216-5 1.4919 Chemical Composition
| Grade | – | C | Mn | Si | P | S | Cr | Mo | Ni | N |
| ASTM A213 ASME SA213 TP316H S31609 | min.max. | 0.04 – 0.10 | -2.00 | -1.00 | -0.045 | -0.030 | 16.0-18.0 | 2.00-3.00 | 11.0-14.0 | – |
| ASTM A312 TP316H S31609 | min.max. | 0.04 – 0.10 | -2.00 | -1.00 | -0.045 | -0.015 | 16.00-18.0 | 2.00-3.00 | 10.0-14.0 | – |
| EN 10216-5 1.4919 | min.max. | 0.04 – 0.08 | -2.00 | -1.00 | -0.035 | -0.015 | 16.5-18.5 | 2.00-2.50 | 10.0-13.0 | -0.11 |
Mechanical Properties of ASTM A213 ASME SA213 TP316H Stainless Steel SMLS Pipe in the Annealed Condition
| Tensile Strength | Yield Strength | ||||||||
| Alloy | UNS | Spec. | MPa | ksi | ksi | MPa | Elongation in 2 inch (min.) % | Grain Size Req. | Max. Hardness HRB Rockwell |
| TP316 | S31600 | A312 | 515 | 75 | 30 | 205 | 35 | — | 90 HRB |
| TP316L | S31603 | A213 | 485 | 70 | 25 | 170 | 35 | — | 90 HRB |
| TP316H | S31609 | A213 | 515 | 75 | 30 | 205 | 35 | 7 or coarser | 90 HRB |
Physical Properties of 316/316L/316H Stainless Steel
| Alloy | UNS | Spec. | Density Specific Gravity kg/dm³ | Modulus of Elasticity (x106 psi) | Mean Coeff icient of Thermal Expansion (IN./IN ./°F x 10-6) | Thermal Cond uctivity (BTU-in/ft2-h-°F) |
| 316 | S31600 | A312 | 7.98 | 28.0 | 9.2 | 116 |
| 316L | S31603 | A213 | 7.98 | 28.0 | 9.2 | 116 |
| 316H | S31609 | A213 | 7.98 | 28.0 | 9.2 | 116 |