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Sportflo Stainless Steel Valves
Sportflo blank billeted valves are forged from a single section of 21-4N stainless steel. The forging process includes: de-burring - upsetting - stress relieving - straightening and shot blasting.
Useful info about 214 N stainless steel
214 N is an austenitic precipitation hardening chrome-maganese-nickel steel with higher additions of Nickel and Nitrogen for increased elevated temperature mechanical properties and better structural stability.
It has double the Nickel content compared to competitors (Ni 4%), which offers greater elevated temperature strength and hardness. 214 N is generally used for medium to heavy duty exhaust valves and heavy duty inlet valves in both diesel and petrol engines.
The maximum constant operating temperature is around 750°C while it has a spiking capability of ± 800°C. 214 N has very good resistance to oxidation and hot corrosion by lead oxide and other combustion products encountered in medium to heavy duty engines under normal operating conditions.
Physical Properties: Mechanical Properties at room temp:
Density: 7.7 g/cm^3
Modulus of Elasticity: 211 N/mm^2
Thermal Conductivity: 18 W/m.K
Magnetism: Non-Magnetism.
* Can be slightly magnetic after cold working
Yield strength: >590N/mm^2
Tensile strength: 980-1200 N/mm^2
Elongation: >8%
Reduction in area: >10%
Hardness: >30HRC
The chemical composition of the steel:
21 4N (EV8)
C: 0.48 / 0.58
Mn: 8.00 / 10.00
P: 0.05 max
S: 0.035 max
Si: 0.25 max
Cr: 20.00 / 23.00
Ni: 3.25 / 4.50
N: 0.38 / 0.55
Fe: BASE
Click Here to get a consultant to advise you on Sportflo Stainless Steel Valves - The performance valve for cars, 4x4s, SUVs, Quads & Bikes...
Stainless Steel Valves - The performance valve for cars, 4x4s, SUVs, Quads, Bikes including Alfa, Audi, BMW, Chev, Chrysler, Colt, Ford, Honda, Hyundai, Isuzu, Jeep, Kia, Mazda, Mercedes, Mini, Nissan, Opel, Toyota, VolksWagen, Yamaha, Honda, Kawasaki and more...
 
 
 
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· Same day delivery (South Africa) if requested on small orders
 
 
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