17-4PH 630 Stainless Steel round Bar

The 17-4PH 630 stainless steel round bar is renowned for its high tensile strength, hardness, and excellent corrosion resistance at elevated temperatures. Also known as UNS S17400, 17-4 PH, and Grade 630, this precipitation-hardened steel is one of the original grades in this category.

JYTSTEEL’s 17-4PH / 630 / 1.4542 is a highly popular and commonly used chromium-nickel alloy steel with a copper additive, featuring a martensitic structure. It offers remarkable corroson resistance while maintaining superior strength and hardness. This stainless steel round bar operates effectively in a temperature range from -29°C to 343°C, retaining good mechanical properties. Additionally, it displays relatively good ductility, with corrosion resistance comparable to 1.4301 / X5CrNi18-10.

As a versatile and widely used material, 17-4PH 630 stainless steel round bar is essential in industries such as aerospace, nuclear, petrochemical, and food processing. Its composition includes 17% chromium, 4% nickel, 4% copper, and trace amounts of molybdenum and niobium, contributing to its unique properties.

Overall, the 17-4PH stainless steel round bar provides an excellent balance of strength, hardness, and corrosion resistance, making it suitable for various applications. This martensitic precipitation-hardening stainless steel achieves high hardness and strength after appropriate heat treatment, offering similar corrosion and heat resistance to Grade 304. The terms "Type 630" and "17-4PH" refer to the same grade.

As a trusted supplier of 17-4PH stainless steel round bars, we understand the benefits of this grade and other precipitation-hardening stainless steels. They are typically supplied in a solution-treated condition for machinability and can be age-hardened to reach impressive strength levels. This aging process occurs at low temperatures, minimizing distortion, making these grades ideal for producing long shafts that require no re-straightening post-heat treatment.