GB/T 699 U20352 Introduce

Steel is one of the most widely used materials in the world, used for a variety of applications from construction to transportation. GB/T 699 U20352 is a popular alloy steel used for a variety of purposes, from precision machining to general engineering use. GB/T 699 U20352 is an alloy which is made up of two different types of steel: high-carbon steel and low-carbon steel. The high-carbon steel is used for the formation of the "matrix" of the metal; this contains the majority of the chemical elements listed above. The low-carbon steel is added for strength and is found mainly in the "alloying" elements. This combination of high-carbon and low-carbon steel creates a metal that is stronger and more durable than either type of steel alone.

Smelting temperature:1329°C - 1246°C

Application:High quality carbon structural steel

GB/T 699 U20352 Material Chemical Composition

The chemical composition of the GB/T 699 U20352 steel are as follows:

ElementMinMax
Silicon (Si)0.17000.3700
Sulfur (S)-0.0350
PhOsphorus (P)-0.0350
Nickel (Ni)-0.2500
Manganese (Mn)0.50000.8000
Copper (Cu)-0.2000
Chromium (Cr)-0.2500
Carbon (C)0.32000.3900

GB/T 699 U20352 Material Mechanical Properties

The mechanical properties of the GB/T 699 U20352 steel are as follows:

YieldRp0.2 ≤ 287 (MPa)
TeileRm≤ 177 (MPa)
ImpactKV/Ku11(J)
ElongationA32%
Reduction in cross section on fractureZ42%
As-Heat-Treated ConditionSolution and Aging, Annealing, Ausaging, Q+T,etc
Brinell hardness (HBW)323

GB/T 699 U20352 Material Thermal Properties

The thermal performance parameters of the GB/T 699 U20352 steel are as follows:

Temperature (°C)41839351
Modulus of elasticity (GPa)-879-
Mean coefficient of thermal expaion ×10-6/(°C)--43
Thermal conductivity (W/m·°C)-11.334.2
Specific thermal capacity (J/kg·°C)-421-
Specific electrical resistivity (Ω mm²/m)0.34--
Deity (kg/dm³)--342
Poisson’s coefficient, ν--143

GB/T 699 U20352 Material Machining Technology

Machining of GB/T 699 U20352 steel typically requires a combination of diverse machining processes for quality production of more complex components. China being the biggest steel producers in the world, manufactures and supplies GB/T 699 U20352 steel, which is a high-quality carbon structural steel. This type of steel is machinable and is suitable for the manufacture of automotive parts, machine tools, and many other machines. Typically, GB/T 699 U20352 steel is used extensively in the manufacture of machinery and tools, as it is strong, durable and has excellent corrosion resistance.