17/4PH Stainless

17/4PH stainless steel suppliers delivering to the whole of the UK. 17/4PH is a chromium-nickel-copper stainless steel, maintains high strength up to a temperature of approximately 600 degrees F and provides a level of corrosion resistance that surpasses the 400 series of stainless steels. Although this grade is most commonly referred to as 17-4 because it is 17% chromium and 4% nickel, it is also known as 630 alloy. Grade 17-4 Stainless Steel has shown a resistance to corrosion which exceeds the 400 series of stainless steels. 17-4 Stainless Steel has a martensitic structure in the annealed condition and requires a low temperature treatment to sustain a higher level of strength. Tempering is recommended to prevent hydrogen embrittlement, chloride stress corrosion cracking and other such deteriorations that are more likely to afflict untempered metals.

For more information on 17/4PH Stainless talk to West Yorkshire Steel Co Ltd