ASTM A479/A479M 405 Introduce

The mechanical properties of ASTM A479/A479M 405 boiler steel depend on the grade and the heat treatment used during manufacturing. Generally, the higher the grade, the greater the strength and resistance to deformation and failure under high temperatures and pressures.

The primary application of ASTM A479/A479M 405 boiler steel is in the manufacturing of boilers, which are pressure vessels used to generate steam or heat water for industrial processes. Boilers are commonly used in industries such as power generation, chemical processing, and food processing.

Smelting temperature:1967°C - 1898°C

Application:Stainless steel and heat-resistant steel bars and profiles for boilers and pressure vessels

ASTM A479/A479M 405 Material Chemical Composition

The chemical composition of the ASTM A479/A479M 405 steel are as follows:

ElementMinMax
Silicon (Si)-1.0000
Sulfur (S)-0.0300
PhOsphorus (P)-0.0400
Nickel (Ni)-0.6000
Manganese (Mn)-1.0000
Chromium (Cr)11.500014.5000
Carbon (C)-0.0800
Aluminum (Al)0.10000.3000

ASTM A479/A479M 405 Material Mechanical Properties

The mechanical properties of the ASTM A479/A479M 405 steel are as follows:

YieldRp0.2 ≤ 464 (MPa)
TeileRm≤ 623 (MPa)
ImpactKV/Ku12(J)
ElongationA41%
Reduction in cross section on fractureZ34%
As-Heat-Treated ConditionSolution and Aging, Annealing, Ausaging, Q+T,etc
Brinell hardness (HBW)242

ASTM A479/A479M 405 Material Thermal Properties

The thermal performance parameters of the ASTM A479/A479M 405 steel are as follows:

Temperature (°C)24128228
Modulus of elasticity (GPa)-151-
Mean coefficient of thermal expaion ×10-6/(°C)--41
Thermal conductivity (W/m·°C)-23.314.2
Specific thermal capacity (J/kg·°C)-314-
Specific electrical resistivity (Ω mm²/m)0.23--
Deity (kg/dm³)--341
Poisson’s coefficient, ν--444