JIS G3463 SUS 321 HTB Introduce
JIS G3463 SUS 321 HTB is an alloy steel made of carbon, silicon, manganese, phosphorus and sulfur. It is mainly used in the construction of high-temperature equipment, such as boilers, pressure vessels, steam turbines and other components.JIS G3463 SUS 321 HTB has good weldability, mechanical properties, and good corrosion resistance. It has been used in the production of various types of boilers and pressure vessels, including the reactors and columns of chemical plants. These contain high-temperature liquids and gases, including superheated steam.
Smelting temperature:1887°C - 1471°C
Application:stainless steel pipe
JIS G3463 SUS 321 HTB Material Chemical Composition
The chemical composition of the JIS G3463 SUS 321 HTB steel are as follows:
| Element | Min | Max |
|---|---|---|
| Titanium (Ti) | - | 0.6000 |
| Silicon (Si) | - | 0.7500 |
| Sulfur (S) | - | 0.0300 |
| PhOsphorus (P) | - | 0.0300 |
| Nickel (Ni) | 9.0000 | 13.0000 |
| Manganese (Mn) | - | 2.0000 |
| Chromium (Cr) | 17.0000 | 20.0000 |
| Carbon (C) | 0.0400 | 0.1000 |
JIS G3463 SUS 321 HTB Material Mechanical Properties
The mechanical properties of the JIS G3463 SUS 321 HTB steel are as follows:
| YieldRp0.2 | ≤ 133 (MPa) |
| TeileRm | ≤ 461 (MPa) |
| ImpactKV/Ku | 24(J) |
| ElongationA | 34% |
| Reduction in cross section on fractureZ | 11% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 421 |
JIS G3463 SUS 321 HTB Material Thermal Properties
The thermal performance parameters of the JIS G3463 SUS 321 HTB steel are as follows:
| Temperature (°C) | 12 | 252 | 975 |
| Modulus of elasticity (GPa) | - | 537 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 21 |
| Thermal conductivity (W/m·°C) | - | 11.3 | 21.2 |
| Specific thermal capacity (J/kg·°C) | - | 333 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.11 | - | - |
| Deity (kg/dm³) | - | - | 412 |
| Poisson’s coefficient, ν | - | - | 323 |