SAE J404 AISI 86L25 Introduce
SAE J404 (Steel, Carbon and High-Strength, Low Alloy – Chemical Composition Limits) is a standard created by the Society of Automotive Engineers (SAE) that outlines the limits for chemical composition of carbon and alloy steel. This standard is used as a reference for specifying automotive steel grades that are produced for various applications, especially for use in parts like engine blocks and crankshafts.
Smelting temperature:1964°C - 1515°C
Application:Chemical compositions of SAE alloy steels
SAE J404 AISI 86L25 Material Chemical Composition
The chemical composition of the SAE J404 AISI 86L25 steel are as follows:
| Element | Min | Max |
|---|---|---|
| Carbon (C) | 0.2300 | 0.2800 |
| Manganese (Mn) | 0.7000 | 0.9000 |
| PhOsphorus (P) | - | 0.0350 |
| Sulfur (S) | - | 0.0400 |
| Silicon (Si) | 0.1500 | 0.3500 |
| Nickel (Ni) | 0.4000 | 0.7000 |
| Chromium (Cr) | 0.4000 | 0.6000 |
| Molybdenum (Mo) | 0.1500 | 0.2500 |
| Copper (Cu) | - | 0.3500 |
| Lead (Pb) | 0.1500 | 0.3500 |
SAE J404 AISI 86L25 Material Mechanical Properties
SAE J404 AISI 86L25 steel also has excellent corrosion resistance. It is a low-alloy steel, so it has limited corrosion resistance compared to stainless steels. However, the addition of vanadium to the steel increases its corrosion resistance. This makes it an ideal choice for applications where corrosion resistance is an important factor, such as exposed elements or those in contact with sea water and other corrosive liquids.
The mechanical properties of the SAE J404 AISI 86L25 steel are as follows:
| YieldRp0.2 | ≤ 678 (MPa) |
| TeileRm | ≤ 768 (MPa) |
| ImpactKV/Ku | 34(J) |
| ElongationA | 34% |
| Reduction in cross section on fractureZ | 31% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 344 |
SAE J404 AISI 86L25 Material Thermal Properties
The thermal performance parameters of the SAE J404 AISI 86L25 steel are as follows:
| Temperature (°C) | 41 | 138 | 939 |
| Modulus of elasticity (GPa) | - | 279 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 41 |
| Thermal conductivity (W/m·°C) | - | 41.3 | 24.2 |
| Specific thermal capacity (J/kg·°C) | - | 232 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.44 | - | - |
| Deity (kg/dm³) | - | - | 124 |
| Poisson’s coefficient, ν | - | - | 113 |
SAE J404 AISI 86L25 Material Machining Technology
By taking the right steps when machining SAE J404 AISI 86L25 steel, machinists can ensure successful results with minimal tool wear and downtime. The key considerations for safe and efficient machining of SAE J404 AISI 86L25 steel include selecting the correct tooling and cutting parameters, using adequate lubricants and coolants, and employing simple techniques to minimize tool wear. With these tips in mind, machinists can look forward to achieving consistent, high-quality results when machining SAE J404 AISI 86L25 steel.