JIS G3463 SUS 444 TB Introduce
JIS G3463 SUS 444 TB 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 444 TB 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:1757°C - 1991°C
Application:stainless steel pipe
JIS G3463 SUS 444 TB Material Chemical Composition
The chemical composition of the JIS G3463 SUS 444 TB steel are as follows:
| Element | Min | Max |
|---|---|---|
| Silicon (Si) | - | 1.0000 |
| Sulfur (S) | - | 0.0300 |
| PhOsphorus (P) | - | 0.0400 |
| (Other) | - | 0.8000 |
| Nickel (Ni) | - | 0.6000 |
| Nitrogen (N) | - | 0.0250 |
| Molybdenum (Mo) | 1.7500 | 2.5000 |
| Manganese (Mn) | - | 1.0000 |
| Chromium (Cr) | 17.0000 | 20.0000 |
| Carbon (C) | - | 0.0250 |
JIS G3463 SUS 444 TB Material Mechanical Properties
The mechanical properties of the JIS G3463 SUS 444 TB steel are as follows:
| YieldRp0.2 | ≤ 644 (MPa) |
| TeileRm | ≤ 787 (MPa) |
| ImpactKV/Ku | 14(J) |
| ElongationA | 11% |
| Reduction in cross section on fractureZ | 13% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 221 |
JIS G3463 SUS 444 TB Material Thermal Properties
The thermal performance parameters of the JIS G3463 SUS 444 TB steel are as follows:
| Temperature (°C) | 11 | 419 | 242 |
| Modulus of elasticity (GPa) | - | 262 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 44 |
| Thermal conductivity (W/m·°C) | - | 11.3 | 11.2 |
| Specific thermal capacity (J/kg·°C) | - | 323 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.14 | - | - |
| Deity (kg/dm³) | - | - | 244 |
| Poisson’s coefficient, ν | - | - | 432 |