Protective Plate 195-7096 Earth Moving Equipment Spare Parts

The advantages of 50Mn

As a high-quality carbon structural steel, 50Mn's core advantages are mainly reflected in the following three aspects:

⚙️ ‌ 1. Excellent mechanical properties ‌

High strength and high wear resistance ‌

The tensile strength is ≥645MPa, and the yield strength is ≥390MPa. With a manganese content of 0.7% to 1%, the hardness and wear resistance of the material are significantly enhanced. It is particularly suitable for manufacturing high-load wear-resistant components such as ‌ gear shafts, mandshafts, and friction discs ‌.

Toughness equilibrium ‌

Elongation ≥13%, impact toughness ≥39J/cm². It maintains structural integrity when subjected to impact loads and is suitable for dynamic load scenarios such as crankshafts of construction machinery and train shafts.

‌ 2. Excellent heat treatment properties ‌

Outstanding hardenability ‌

Compared with ordinary 50# steel, manganese element optimizes hardenability. Parts with a cross-section of ≤80mm (such as mandshafts and connecting rods) can achieve uniform hardening, ensuring the consistency of overall performance of large components.

The heat treatment strengthening effect is remarkable ‌

After quenching at 820℃ and tempering at 550℃, the strength, hardness and elasticity are simultaneously enhanced. High-frequency quenching is more suitable for precision components (such as automotive crankshafts).

️ ‌ III. Typical application scenarios ‌

Heavy machinery ‌ : bulldozer drive wheel gear ring, mining crusher gear shaft

Transportation ‌ : train axles, automotive crankshafts and connecting rods

Specialized equipment ‌ : high-stress mandrel (diameter <80mm), flat spring

⚠️ ‌ notes ‌

Strict process control is required

Poor weldability ‌, prone to cracking

Overheating sensitivity and tempering brittleness tendency ‌, precise temperature control is required to avoid failure.

Overall, 50Mn, with its golden ratio of ‌ strength - toughness - wear resistance ‌, becomes an ideal material for medium and high-load wear-resistant components, especially suitable for key load-bearing structures strengthened by heat treatment.