17-4PH stainless steel properties

17-4 PH steel is 630 precipitation hardening martensitic stainless steel. The alloy is characterized by high strength and excellent corrosion resistance, and the recommended operating temperature is below 300°C. 630 steel material is hardenable stainless steel. Through different heat treatment, different hardness can be obtained, and its tensile strength can reach up to 1100~1300MPa.
 
Among all hardenable stainless steels, 630 has the best corrosion resistance. Its corrosion resistance is comparable to 304 in most environments, and is generally better than 400 series stainless steel. In petrochemical, food industry, papermaking and other industries, the corrosion resistance of 630 is the same as that of 304L. In the marine environment, 630 is simply corroded by seawater and is only suitable for offshore platforms.
 
Based on the above two characteristics, coupled with excellent welding performance, 630 is generally used in occasions that require both excellent corrosion resistance and unusual high strength. 17-4 PH (UNS S17400) steel is a martensitic precipitation hardening stainless steel with high strength, high hardness and medium corrosion resistance up to 600°F.
 
17-4PH stainless steel has good manufacturing characteristics and can be age hardened with a single heat treatment in the temperature range of 900-1150°F. This grade has been used in various oilfield and chemical processing equipment, as well as accessories and fasteners. Typical standard 17-4 PH stainless steel. Physical characteristic density of 17-4 PH stainless steel, pound/inch 3:0.280 modulus of elasticity.
 

Pre: A516 Gr 60 pressure vessel plates stock in March

Next: Q690 steel plate what is the welding process?