1.6981 21CrMoNiV4-7 Quenchied Tempered Forged Sleeves

High-Performance 21CrMoNiV4-7 Carburized Alloy Steel for Industrial Machinery Components

Engineered for exceptional durability and load-bearing capacity, 21CrMoNiV4-7 alloy steel stands as a premium choice in the manufacturing of critical mechanical parts. This high-performance carburized steel combines precise carbon content with strategic alloying elements like chromium, molybdenum, and vanadium to deliver superior surface hardness, core toughness, and fatigue resistance—ideal for demanding industrial applications. Unlike standard carbon steels such as 45# or 40Cr, which offer moderate strength, 21CrMoNiV4-7 excels under extreme stress conditions, making it a preferred material in automotive transmission systems, heavy-duty gears, and precision-engineered shafts.

Our selection includes not only this advanced alloy but also other specialized materials tailored to specific operational needs: alloy steels like 35CrMo and 42CrMo provide enhanced wear resistance and heat treatability; stainless steels such as 304 and 316 ensure corrosion immunity in harsh chemical environments; and titanium alloys offer lightweight strength where weight reduction is crucial, such as in aerospace components. Each material type serves distinct performance goals—from general-purpose structural integrity to extreme temperature resilience and long-term environmental stability.

Key features of 21CrMoNiV4-7 include excellent carburizing response, uniform microstructure after heat treatment, minimal distortion during quenching, and outstanding impact toughness at both room and elevated temperatures. These properties make it particularly suitable for parts that must endure cyclic loading, high torque, or abrasive contact over extended service life. The alloy’s balanced composition ensures compatibility with common machining techniques including turning, milling, grinding, and welding, allowing manufacturers flexibility in production processes while maintaining part consistency.

This material is commonly used in the production of forged sleeves, cylinder bodies, and carbon steel fittings designed for heavy machinery, oil & gas equipment, and agricultural tools. Whether you're seeking durable Stainless Steel Forged Sleeves (like SA182-F316), robust alloy steel cylinders, or custom-forged carbon steel components, 21CrMoNiV4-7 offers a reliable foundation for high-stress mechanical assemblies. Its ability to maintain dimensional accuracy under thermal cycling and its resistance to deformation under sustained loads make it an optimal solution for engineers designing for longevity and reliability.

Users across global markets report consistent performance when using 21CrMoNiV4-7 in gear trains, crankshafts, and connecting rods—components often exposed to variable loads and dynamic stresses. Many professionals appreciate how this alloy reduces maintenance frequency compared to lower-grade alternatives, offering cost savings over time through extended component life. In environments where rust or oxidation could compromise function, combining 21CrMoNiV4-7 with protective coatings or selecting stainless steel variants ensures operational continuity even in humid or chemically aggressive settings.

Frequently asked questions include inquiries about machinability, heat treatment protocols, and compatibility with existing manufacturing standards. While 21CrMoNiV4-7 requires careful control during carburizing and quenching steps, its predictable behavior allows for optimized processing parameters that yield consistent mechanical outcomes. It meets international specifications such as DIN 1.6981 and is widely recognized by OEMs for its balance of strength, ductility, and processability in complex engineering contexts.