+86-18363688899
Steering knuckle / 42CrMo
Our 42CrMo alloy steel steering knuckle is a core load-bearing chassis component manufactured by professional silica sol lost wax precision casting process. Also known as spindle knuckle, it bears steering force, vehicle load and impact load during driving, and works with bearings, brake assemblies and control arms to realize vehicle steering function.
Adopting high-performance 42CrMo medium carbon chromium-molybdenum alloy steel material, the product meets GB/T 3077 standard, equivalent to AISI 4140 / 42CrMo4 international alloy steel grade. After complete quenching and tempering heat treatment, the steering knuckle achieves balanced high tensile strength, outstanding low-temperature impact toughness and long-term fatigue resistance, effectively solving cracking, deformation and wear failures common in ordinary carbon steel knuckles under heavy load. It supports one-stop customized production integrating casting, heat treatment and CNC precision machining, widely matched for passenger cars, commercial trucks, forklifts, construction machinery and agricultural vehicles.
Core Material & Performance Advantages of 42CrMo Steering Knuckle
- Excellent Hardenability & Uniform Mechanical Properties Cr and Mo alloy elements greatly improve deep hardenability. Even thick wall structure can obtain consistent hardness and strength from surface to core, avoiding local softening under long-term alternating load.
- Ultra-high Fatigue Resistance Vehicles generate frequent alternating stress during steering, bumpy driving and braking. 42CrMo material effectively resists fatigue crack propagation, greatly extending service life for frequent steering working conditions.
- Superior Impact & Wear Resistance Strong resistance to instant impact from road bumps, stones and heavy cargo load; matched with surface machining, the mounting holes and journal positions maintain low wear rate for long-term operation.
- Stable Mechanical Performance Under Variable Temperature No obvious performance attenuation under high temperature braking and low-temperature cold environment, suitable for all climate and complex road conditions.
- Easy Secondary Precision Machining Blank castings have small machining allowance and smooth surface, convenient for CNC turning, milling, drilling, tapping and grinding to meet precise assembly tolerance requirements.
