ASTM A709/A709M Grade 100W Type P Introduce
The ASTM A709/A709M steel standard is used for a variety of structural applications, including bridges, towers, girders, buildings and other large structures. It is particularly suited for use in hazardous or extreme weather conditions, due to its superior strength and durability compared to other steels. The standard is also often used in the manufacture of railway wagons, transport beams and crane booms.
Smelting temperature:1314°C - 1715°C
Application:Structural steel for bridge
ASTM A709/A709M Grade 100W Type P Material Chemical Composition
The chemical composition of the ASTM A709/A709M Grade 100W Type P steel are as follows:
| Element | Min | Max |
|---|---|---|
| Silicon (Si) | 0.2000 | 0.3500 |
| Sulfur (S) | - | 0.0350 |
| PhOsphorus (P) | - | 0.0350 |
| Nickel (Ni) | 1.2000 | 1.5000 |
| Molybdenum (Mo) | 0.4500 | 0.6000 |
| Manganese (Mn) | 0.4500 | 0.7000 |
| Chromium (Cr) | 0.8500 | 1.2000 |
| Carbon (C) | 0.1200 | 0.2100 |
| Boron (B) | 0.0010 | 0.0050 |
ASTM A709/A709M Grade 100W Type P Material Mechanical Properties
Hardness is a measure of the resistance to abrasion, scratch, or penetration. ASTM A709/A709M Grade 100W Type P steel has excellent hardness, with a Brinell hardness ranging from 170HB to 365HB, depending on the grade. This allows the steel to withstand heavy wear and tear without losing strength or shape.
The mechanical properties of the ASTM A709/A709M Grade 100W Type P steel are as follows:
| YieldRp0.2 | ≤ 555 (MPa) |
| TeileRm | ≤ 486 (MPa) |
| ImpactKV/Ku | 14(J) |
| ElongationA | 43% |
| Reduction in cross section on fractureZ | 11% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 433 |
ASTM A709/A709M Grade 100W Type P Material Thermal Properties
The thermal performance parameters of the ASTM A709/A709M Grade 100W Type P steel are as follows:
| Temperature (°C) | 12 | 527 | 631 |
| Modulus of elasticity (GPa) | - | 946 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 43 |
| Thermal conductivity (W/m·°C) | - | 12.3 | 24.2 |
| Specific thermal capacity (J/kg·°C) | - | 124 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.42 | - | - |
| Deity (kg/dm³) | - | - | 341 |
| Poisson’s coefficient, ν | - | - | 221 |