STK High-Performance Stainless Steel 21-4N?
The STK Performance Valve is forged using 21-4N Stainless Steel which is strong and can handle most applications.
The STK Performance Valve is forged using 21-4N Stainless Steel which is strong and can handle most applications.
What is 21-4N?
21-4N Super alloys or high-performance alloys can function at temperatures above 540ºC(1000ºF) with deformation resistance and high surface stability.
Super alloy 21-4N valve steel is widely used in the manufacture of automotive High-Performance Valves.
Most production valves are made from two components to make up the valve, the valve head and the valve stem and are joint bonded by electric-resistance-heat-aided friction welding. Usually the two components are made from two different types of material / Steel.
21-4N is usually considered to be the premium material for performance exhaust valves.
Most of our Stainless Steel valves we produce with extra overall length. This is to aid with under-bucket shimming and eliminates the use of a shim between the valve and Bucket/lifter.
The Valve is Undercut and reshaped around the head area for optimum flow and reliability.
This is best used with high rev valve spring applications to avoid valve failure, standard valve heads may break at the joint due to additional force of valve closure caused by the additional poundage of a Competition valve spring.
21-4N Super alloys or high-performance alloys can function at temperatures above 540ºC(1000ºF) with deformation resistance and high surface stability.
Super alloy 21-4N valve steel is widely used in the manufacture of automotive High-Performance Valves.
Most production valves are made from two components to make up the valve, the valve head and the valve stem and are joint bonded by electric-resistance-heat-aided friction welding. Usually the two components are made from two different types of material / Steel.
21-4N is usually considered to be the premium material for performance exhaust valves.
Most of our Stainless Steel valves we produce with extra overall length. This is to aid with under-bucket shimming and eliminates the use of a shim between the valve and Bucket/lifter.
The Valve is Undercut and reshaped around the head area for optimum flow and reliability.
This is best used with high rev valve spring applications to avoid valve failure, standard valve heads may break at the joint due to additional force of valve closure caused by the additional poundage of a Competition valve spring.
