ASTM A512 Grade 1020 Introduce
The ASTM A512 Grade 1020 steel is composed primarily of carbon and alloy elements, though it may also contain elements such as molybdenum, manganese, or chromium. This steel type has excellent tensile strength, as well as a high level of ductility and machinability. It is alloyed with oxygen and nitrogen to minimize grain boundaries and create a strong and uniform grain structure. ASTM A512 Grade 1020 is also flame resistant, meaning that it can maintain its strength under very high temperatures.
Smelting temperature:1435°C - 1327°C
Application:Cold drawn butt welded carbon steel mechanical pipe
ASTM A512 Grade 1020 Material Chemical Composition
The chemical composition of the ASTM A512 Grade 1020 steel are as follows:
| Element | Min | Max |
|---|---|---|
| Sulfur (S) | - | 0.0450 |
| PhOsphorus (P) | - | 0.0400 |
| Manganese (Mn) | 0.3000 | 0.6000 |
| Carbon (C) | 0.1800 | 0.2300 |
ASTM A512 Grade 1020 Material Mechanical Properties
Tensile strength is a measure of the amount of force a material can withstand before it breaks. ASTM A512 Grade 1020 steel is a medium tensile strength steel, with a tensile strength ranging from 52,000 psi (pounds per square inch) to 68,000 psi. This range of tensile strength enables ASTM A512 steel to be used in a variety of applications, including construction, manufacturing, and engineering.
The mechanical properties of the ASTM A512 Grade 1020 steel are as follows:
| YieldRp0.2 | ≤ 461 (MPa) |
| TeileRm | ≤ 899 (MPa) |
| ImpactKV/Ku | 32(J) |
| ElongationA | 13% |
| Reduction in cross section on fractureZ | 11% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 432 |
ASTM A512 Grade 1020 Material Thermal Properties
The thermal performance parameters of the ASTM A512 Grade 1020 steel are as follows:
| Temperature (°C) | 23 | 935 | 536 |
| Modulus of elasticity (GPa) | - | 365 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 13 |
| Thermal conductivity (W/m·°C) | - | 22.3 | 42.2 |
| Specific thermal capacity (J/kg·°C) | - | 113 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.14 | - | - |
| Deity (kg/dm³) | - | - | 331 |
| Poisson’s coefficient, ν | - | - | 342 |
ASTM A512 Grade 1020 Material Machining Technology
When machining ASTM A512 Grade 1020 steel, a number of specialized tools are required. These include drills, taps, milling machines, grinders, and lathes. Drills are necessary for the creation of holes in the steel, and come in a variety of sizes and types. Taps are used to create internal threads, and usually come in sets of sizes and thread types. Milling machines are used to create flat surfaces and slots, and are available with a variety of cutting tools. Grinders are used to polish and smooth the surface of the steel, and come in both hand-operated and machine-operated models. Lathes are necessary for the creation of cylindrical shapes, and always require the use of specialized cutting tools.