SAE J403 15B45 Introduce
SAE J403 is an SAE Standard for "Chemical Composition of SAE Carbon Steels." This standard specifies the chemical composition of carbon steels and includes information such as the maximum percentage of carbon, manganese, phosphorus, sulfur, silicon, chromium, nickel, molybdenum and vanadium. SAE J403 is issued by the Society of Automotive Engineers (SAE). SAE J403 15B45Carbon steel is a type of iron-carbon alloy, it contains carbon elements in different proportions and different other elements. Carbon steel is mainly used in automotive, mining and aerospace engineering. Automotive applications such as casting engine components, bodywork and frames, and aerospace applications such as aircraft frames and turbine machinery parts typically use carbon steel.
Smelting temperature:1892°C - 1282°C
Application:Chemical Compositions of SAE Carbon Steels
SAE J403 15B45 Material Chemical Composition
The chemical composition of the SAE J403 15B45 steel are as follows:
| Element | Min | Max |
|---|---|---|
| Silicon (Si) | - | 0.1000 |
| Sulfur (S) | - | 0.0500 |
| Lead (Pb) | 0.1000 | 0.3500 |
| PhOsphorus (P) | - | 0.0400 |
| Manganese (Mn) | 0.8000 | 1.1000 |
| Carbon (C) | 0.4300 | 0.5000 |
| Boron (B) | 0.0005 | 0.0030 |
SAE J403 15B45 Material Mechanical Properties
We will explore the mechanical properties of SAE J403 15B45 steel and how they can be optimized for different applications. We will discuss how different heat treatment processes impact the microstructure of the material and the resulting mechanical properties. Finally, we will discuss some common applications of this versatile material.
The mechanical properties of the SAE J403 15B45 steel are as follows:
| YieldRp0.2 | ≤ 831 (MPa) |
| TeileRm | ≤ 639 (MPa) |
| ImpactKV/Ku | 33(J) |
| ElongationA | 13% |
| Reduction in cross section on fractureZ | 12% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 141 |
SAE J403 15B45 Material Thermal Properties
The thermal performance parameters of the SAE J403 15B45 steel are as follows:
| Temperature (°C) | 12 | 367 | 768 |
| Modulus of elasticity (GPa) | - | 331 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 23 |
| Thermal conductivity (W/m·°C) | - | 42.3 | 34.2 |
| Specific thermal capacity (J/kg·°C) | - | 413 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.22 | - | - |
| Deity (kg/dm³) | - | - | 331 |
| Poisson’s coefficient, ν | - | - | 422 |
SAE J403 15B45 Material Machining Technology
The most common machining strategies for SAE J403 15B45 steel involve a combination of turning and milling processes. Due to the material's high strength and hardness, heavier cuts must be used to prevent damage to the material. Additionally, due to the material's good machinability, smaller tools and faster feeds should be used to maximize efficiency and productivity. Lastly, it is important to use the right lubricants and coolants to ensure the best results and to prevent excessive wear on the cutting tools.