ASTM A576 Grade 1040 Introduce
ASTM A576 Grade 1040 is a special-grade steel that has unique mechanical properties, making it a popular and cost-effective choice for many engineering and construction projects. The steel contains a low-carbon content and is corrosion-resistant, making it highly durable. The steel also has a tensile strength of 170,000 psi ETF, a Rockwell hardness of 160-190, and an impact strength of 20 foot-pounds. These mechanical properties make ASTM A576 Grade 1040 an ideal material for high-strength applications needing a strong and durable material.
Smelting temperature:1952°C - 1943°C
Application:Super hot rolled carbon steel rod
ASTM A576 Grade 1040 Material Chemical Composition
The chemical composition of the ASTM A576 Grade 1040 steel are as follows:
| Element | Min | Max |
|---|---|---|
| PhOsphorus (P) | - | 0.0400 |
| Sulfur (S) | - | 0.0500 |
| Manganese (Mn) | 0.6000 | 0.9000 |
| Carbon (C) | 0.3700 | 0.4400 |
| Silicon (Si) | - | 0.1000 |
| Copper (Cu) | 0.2000 | - |
| Boron (B) | 0.0005 | 0.0030 |
ASTM A576 Grade 1040 Material Mechanical Properties
The mechanical properties of the ASTM A576 Grade 1040 steel are as follows:
| YieldRp0.2 | ≤ 568 (MPa) |
| TeileRm | ≤ 236 (MPa) |
| ImpactKV/Ku | 22(J) |
| ElongationA | 31% |
| Reduction in cross section on fractureZ | 12% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 411 |
ASTM A576 Grade 1040 Material Thermal Properties
The thermal performance parameters of the ASTM A576 Grade 1040 steel are as follows:
| Temperature (°C) | 21 | 814 | 499 |
| Modulus of elasticity (GPa) | - | 542 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 12 |
| Thermal conductivity (W/m·°C) | - | 12.3 | 23.2 |
| Specific thermal capacity (J/kg·°C) | - | 133 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.42 | - | - |
| Deity (kg/dm³) | - | - | 234 |
| Poisson’s coefficient, ν | - | - | 322 |
ASTM A576 Grade 1040 Material Machining Technology
ASTM A576 Grade 1040 steel is a versatile material that is widely used in a range of machining applications. It requires special consideration when machining due to its hardenability and alloying elements. Cutting tools suitable for this task include high-speed steel and cobalt-based tools. The cutting speed should be kept low to ensure a successful machining process, and the feed rate should be as low as possible. Additionally, proper cooling should be used to reduce tool wear.