Overview
ASTM A213 Grade 316H Tube is an austenitic grade second only to 304 in commercial importance. Which contains an addition of molybdenum that gives it improved corrosion resistance. And it is the most widely used commercial grade of stainless steel supplied into numerous industry sectors which also referred as WNR 1.4919 Seamless Tube. And the grade 316H boiler tubes also possesses excellent mechanical and corrosion properties at sub-zero temperatures.
Few significant Properties of 316H pipes and tubes are which they have higher pitting resistance, soaring oxidation resistance, and strapping resistance to most chemicals that are involved in the paper and textile industries.
Grade 316H Pipes and tubes have the top-notch quality to survive in all different media. Its structure and dimensions give strength and all specifications to fulfill the exact client requirements. They have outstanding corrosion-resistant and weldability features, and can be used in the marine and corrosive chemical atmosphere and serve higher creep, tensile strength, etc. They are commonly preferred for a wide range of industrial sectors.
Specification
ASTM A213/A213M-21a Standard Specification for Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes.
| Specifications | ASTM A/ASME SA213/A249/A269/A312/A358 CL |
| Dimensions | ASTM, ASME and API |
| Schedule | SCH 10, SCH20, SCH30, SCH40, STD, SCH60, XS, SCH80, SCH120, SCH140, SCH160, XXS |
| Wall Thickness | Schedule 5S - Schedule XXS. |
| Size - Seamless 316H Pipes & Tubes | 1/2"NB - 16"NB |
| ERW 316H Pipes & Tubes | 1/2"NB - 24"NB |
| EFW 316H Pipes & Tubes | 6"NB - 100"NB |
| Length | Single Random, Double Random & Cut Length. |
| Types | Seamless / ERW / Welded / Fabricated / LSAW Pipes |
| Form | Round, Square, Rectangular, Hydraulic Etc |
| End | Plain End, Beveled End, Treaded |
ASTM A213 SS 316H Equivalent:
Grade | UNS No | Old British | Euronorm | Swedish SS | Japanese JIS | ||
| BS | En | No | Name | ||||
| 316H | S31609 | 316S51 | – | – | – | – | – |
Chemical Composition
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | |
316H | Min | 0.04 | 0.04 | 0 | – | – | 16.0 | 2.00 | 10.0 | – |
| max | 0.10 | 0.10 | 0.75 | 0.045 | 0.03 | 18.0 | 3.00 | 14.0 | – |
Mechanical Properties
Grade | Tensile Strength | Yield Strength | Elongation | Hardness | |
| Rockwell B (HR B) max | Brinell (HB) max | ||||
| 316H | 515 | 205 | 40% | 95 | 217 |
Physical Properties
Grade | Density | Elastic Modulus | Mean Co-eff of Thermal Expansion (µm/m/°C) | Thermal Conductivity (W/m.K) | Specific Heat 0-100°C (J/kg.K) | Elec Resistivity (nΩ.m) | |||
| 0-100°C | 0-315°C | 0-538°C | At 100°C | At 500°C | |||||
| 316/L/H | 8000 | 193 | 15.9 | 16.2 | 17.5 | 16.3 | 21.5 | 500 | 740 |
SS 316H Tube ASTM A213 Tolerances
| Specification | Allowable Outside Diameter Variation in mm | Allowable Wall Thickness Variation | Exact Length Tolerance in mm | Testing | ||||
| Nominal Diameter | Over | Under | %Over | %Under | Over | Under | ||
| ASTM-A213 TP316H Seamless Boiler Superheater and Heat Exchanger Tubes | Under 25.4 | .1016 | .1016 | +20 | -0 | 3.175 | 0 | Flattening Test |
| 25.4-38.1 incl | .1524 | .1524 | +22 | -0 | 3.175 | 0 | Tension Test | |
| 38.1-50.8 excl | .2032 | .2032 | +22 | -0 | 3.176 | 0 | Flare Test | |
| 50.8-63.5 excl | .254 | .254 | +2 | -0 | 4.46 | 0 | Hardness Test | |
| 63.5-76.2 excl | .316H8 | .316H8 | +22 | -0 | 4.76 | 0 | 100% Hydrostatic test | |
| 76.2-101.6 incl | .381 | .381 | +22 | -0 | 4.76 | 0 | Refer to ASTM A-450 | |
Applications
- 1. Typical Applications of these AISI 316H Tubes are Moisture separator reheaters, feedwater tubes, Stator bars, Heat exchangers, and more.
- 2. Industries predominantly using these SUS 316H Pipes are Nuclear and power, General engineering, etc.
- 3. Other applications of TP 316H Tubes include bellows, beer barrels, chemical equipment, cooling coils, coal hopper linings, cryogenic vessels, evaporators, dairy equipment, flexible metal hose, hypodermic needles, food processing equipment, nuclear vessels, refrigeration equipment, oil well filter screens, paper industry, sanitary fittings, pressure vessels, valves, spinning, still tubes, shipping drums, textile dyeing equipment, tubing, etc.
