ASTM A512 Grade MT1025 Introduce
ASTM A512 is a steel standard issued by American Society for Testing and Materials (ASTM), an international standards organization that develops and publishes technical standards for a wide range of materials, products, systems, and services. This steel standard describes the requirements and characteristics of cold-drawn mechanical steel tubing. Manufacturers that produce cold-drawn tubing used in basic applications such as hydraulic cylinders, hydraulic lines, and air conditioning components must adhere to the specifications detailed in the ASTM A512 steel standard.
Smelting temperature:1293°C - 1658°C
Application:Cold drawn butt welded carbon steel mechanical pipe
ASTM A512 Grade MT1025 Material Mechanical Properties
Ductility measures the material's ability to deform, before it breaks. ASTM A512 Grade MT1025 steel is a highly ductile material, with an elongation of up to 40%. This high ductility is important for many applications that require the steel to undergo deformation and flexible bending.
The mechanical properties of the ASTM A512 Grade MT1025 steel are as follows:
| YieldRp0.2 | ≤ 775 (MPa) |
| TeileRm | ≤ 466 (MPa) |
| ImpactKV/Ku | 24(J) |
| ElongationA | 33% |
| Reduction in cross section on fractureZ | 23% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 134 |
ASTM A512 Grade MT1025 Material Thermal Properties
The thermal performance parameters of the ASTM A512 Grade MT1025 steel are as follows:
| Temperature (°C) | 14 | 224 | 529 |
| Modulus of elasticity (GPa) | - | 825 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 33 |
| Thermal conductivity (W/m·°C) | - | 34.3 | 31.2 |
| Specific thermal capacity (J/kg·°C) | - | 444 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.11 | - | - |
| Deity (kg/dm³) | - | - | 214 |
| Poisson’s coefficient, ν | - | - | 333 |
ASTM A512 Grade MT1025 Material Machining Technology
When machining ASTM A512 Grade MT1025 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.