ASTM A709/A709M Grade 100 Type H Introduce
ASTM A709/A709M Grade 100 Type H steel is a hot-rolled carbon steel plate with enhanced corrosion resistance, designed for use in arduous conditions. It is available in four grades: Grade 36, Grade 50, Grade 50W, and Grade 100. The addition of manganese helps to improve the strength and wear resistance of the steel, while the presence of phosphorus and sulfur increase its yield strength. ASTM A709/A709M Grade 100 Type H steel is commonly used in bridges, buildings, infrastructure projects, and other weather-dependent applications.
Smelting temperature:1673°C - 1548°C
Application:Structural steel for bridge
ASTM A709/A709M Grade 100 Type H Material Chemical Composition
The chemical composition of the ASTM A709/A709M Grade 100 Type H steel are as follows:
| Element | Min | Max |
|---|---|---|
| Vanadium (V) | 0.0300 | 0.0800 |
| Silicon (Si) | 0.2000 | 0.3500 |
| Sulfur (S) | - | 0.0350 |
| PhOsphorus (P) | - | 0.0350 |
| Nickel (Ni) | 0.3000 | 0.7000 |
| Molybdenum (Mo) | 0.2000 | 0.3000 |
| Manganese (Mn) | 0.9500 | 1.3000 |
| Chromium (Cr) | 0.4000 | 0.6500 |
| Carbon (C) | 0.1200 | 0.2100 |
| Boron (B) | 0.0005 | 0.0050 |
ASTM A709/A709M Grade 100 Type H Material Mechanical Properties
ASTM A709/A709M Grade 100 Type H steel is a highly engineered, low-alloy structural steel commonly used in modern engineering applications due to its exceptional combination of mechanical properties. This includes a wide range of tensile strengths, yield strengths, elasticities, and hardness levels, allowing it to withstand heavy loads and wear without losing its shape or strength. Each grade of ASTM A709/A709M Grade 100 Type H steel is carefully engineered to provide the best combination of mechanical properties for a particular engineering application, making it an ideal choice for creating structurally sound and durable structures.
The mechanical properties of the ASTM A709/A709M Grade 100 Type H steel are as follows:
| YieldRp0.2 | ≤ 215 (MPa) |
| TeileRm | ≤ 825 (MPa) |
| ImpactKV/Ku | 13(J) |
| ElongationA | 11% |
| Reduction in cross section on fractureZ | 13% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 122 |
ASTM A709/A709M Grade 100 Type H Material Thermal Properties
The thermal performance parameters of the ASTM A709/A709M Grade 100 Type H steel are as follows:
| Temperature (°C) | 22 | 116 | 337 |
| Modulus of elasticity (GPa) | - | 882 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 41 |
| Thermal conductivity (W/m·°C) | - | 41.3 | 33.2 |
| Specific thermal capacity (J/kg·°C) | - | 223 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.23 | - | - |
| Deity (kg/dm³) | - | - | 324 |
| Poisson’s coefficient, ν | - | - | 413 |