{"id":816717,"date":"2026-06-01T16:58:02","date_gmt":"2026-06-01T16:58:02","guid":{"rendered":"https:\/\/www.abnewswire.com\/pressreleases\/?p=816717"},"modified":"2026-06-01T16:58:02","modified_gmt":"2026-06-01T16:58:02","slug":"what-is-grade-630-stainless-steel-strength-properties-and-uses-of-174ph","status":"publish","type":"post","link":"https:\/\/www.abnewswire.com\/pressreleases\/what-is-grade-630-stainless-steel-strength-properties-and-uses-of-174ph_816717.html","title":{"rendered":"What is Grade 630 Stainless Steel? Strength, Properties and Uses of 17-4PH"},"content":{"rendered":"<p style=\"text-align: justify;\">As industries demand stronger and more corrosion-resistant materials, <strong>Grade 630 stainless steel<\/strong>,also known as <strong>17-4PH stainless steel<\/strong>, has become one of the most widely used high-performance alloys.It offers an excellent combination of strength, toughness, and corrosion resistance, making it ideal for criticalengineering applications.<\/p>\n<p style=\"text-align: justify;\">What is Grade 630 Stainless Steel?<\/p>\n<p style=\"text-align: justify;\"><strong>Grade 630 stainless steel (UNS S17400)<\/strong> is a precipitation-hardening martensitic stainless steel.It is designed to deliver high strength through heat treatment while maintaining good corrosion resistance.<\/p>\n<p style=\"text-align: justify;\">The name <strong>17-4PH<\/strong> refers to its composition:<\/p>\n<ul style=\"text-align: justify;\">\n<li>Approximately 17% Chromium<\/li>\n<li>Approximately 4% Nickel<\/li>\n<li>PH = Precipitation Hardening<\/li>\n<\/ul>\n<p style=\"text-align: justify;\">This unique composition allows the material to be heat treated to achieve different strength levels depending on application requirements.<\/p>\n<p style=\"text-align: justify;\">Chemical Composition of 630 Stainless Steel<\/p>\n<table>\n<tbody>\n<tr>\n<th>Element<\/th>\n<th>Content<\/th>\n<\/tr>\n<tr>\n<td>Chromium (Cr)<\/td>\n<td>15&ndash;17.5%<\/td>\n<\/tr>\n<tr>\n<td>Nickel (Ni)<\/td>\n<td>3&ndash;5%<\/td>\n<\/tr>\n<tr>\n<td>Copper (Cu)<\/td>\n<td>3&ndash;5%<\/td>\n<\/tr>\n<tr>\n<td>Carbon (C)<\/td>\n<td>&le;0.07%<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p style=\"text-align: justify;\">Strength of Grade 630 Stainless Steel<\/p>\n<p style=\"text-align: justify;\">One of the key advantages of <strong>Grade 630 stainless steel<\/strong> is its exceptional mechanical strength after heat treatment.It is widely used in applications requiring high load-bearing capacity and fatigue resistance.<\/p>\n<table>\n<tbody>\n<tr>\n<th>Property<\/th>\n<th>Value<\/th>\n<\/tr>\n<tr>\n<td>Tensile Strength<\/td>\n<td>1000&ndash;1300 MPa<\/td>\n<\/tr>\n<tr>\n<td>Yield Strength<\/td>\n<td>850&ndash;1100 MPa<\/td>\n<\/tr>\n<tr>\n<td>Hardness<\/td>\n<td>Up to 40 HRC<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<ul style=\"text-align: justify;\">\n<li>High strength-to-weight ratio<\/li>\n<li>Excellent fatigue resistance<\/li>\n<li>Good impact toughness<\/li>\n<li>Stable mechanical performance<\/li>\n<\/ul>\n<p style=\"text-align: justify;\">Heat Treatment of 17-4PH Stainless Steel<\/p>\n<p style=\"text-align: justify;\">Grade 630 stainless steel can be heat treated to achieve different mechanical properties:<\/p>\n<ul style=\"text-align: justify;\">\n<li><strong>H900:<\/strong> Highest strength<\/li>\n<li><strong>H1025:<\/strong> Balanced strength and toughness<\/li>\n<li><strong>H1150:<\/strong> Improved toughness and corrosion resistance<\/li>\n<\/ul>\n<p style=\"text-align: justify;\">This flexibility makes 17-4PH stainless steel suitable for a wide range of engineering applications.<\/p>\n<p style=\"text-align: justify;\"><img decoding=\"async\" src=\"https:\/\/www.sakysteel.com\/uploads\/Grade-630-stainless-steel.jpg\" alt=\"What is Grade 630 Stainless Steel? Strength, Properties and Uses of 17-4PH\" \/><\/p>\n<p style=\"text-align: justify;\">Corrosion Resistance of Grade 630 Stainless Steel<\/p>\n<p style=\"text-align: justify;\">Grade 630 offers good corrosion resistance in many industrial environments. While it does not match the performance of 316 stainless steelin highly corrosive conditions, it performs well in:<\/p>\n<ul style=\"text-align: justify;\">\n<li>Atmospheric environments<\/li>\n<li>Mild chemical exposure<\/li>\n<li>Industrial processing systems<\/li>\n<\/ul>\n<p style=\"text-align: justify;\">Uses of Grade 630 Stainless Steel<\/p>\n<p style=\"text-align: justify;\">Due to its strength and reliability, <strong>17-4PH stainless steel<\/strong> is widely used in multiple industries:<\/p>\n<p style=\"text-align: justify;\">Aerospace Industry<\/p>\n<ul style=\"text-align: justify;\">\n<li>Turbine components<\/li>\n<li>Aircraft structural parts<\/li>\n<li>High-strength fasteners<\/li>\n<\/ul>\n<p style=\"text-align: justify;\">Oil &amp; Gas Industry<\/p>\n<ul style=\"text-align: justify;\">\n<li>Valve components<\/li>\n<li>Pump shafts<\/li>\n<li>Downhole tools<\/li>\n<\/ul>\n<p style=\"text-align: justify;\">Marine Applications<\/p>\n<ul style=\"text-align: justify;\">\n<li>Propeller shafts<\/li>\n<li>Marine hardware<\/li>\n<li>High-load fittings<\/li>\n<\/ul>\n<p style=\"text-align: justify;\">Industrial Engineering<\/p>\n<ul style=\"text-align: justify;\">\n<li>Mold and die components<\/li>\n<li>Mechanical parts<\/li>\n<li>Heavy machinery components<\/li>\n<\/ul>\n<p style=\"text-align: justify;\">Conclusion<\/p>\n<p style=\"text-align: justify;\"><strong>Grade 630 stainless steel (17-4PH)<\/strong> is a high-performance alloy that combines strength, durability,and corrosion resistance. Its ability to be heat treated makes it one of the most versatile materials in modernengineering applications.<\/p>\n<p style=\"text-align: justify;\">Understanding its properties and uses allows engineers and buyers to select the right material for high-demand projects, ensuring long-term reliability and performance.<\/p>\n<p><span style='font-size:18px !important;'>Media Contact<\/span><br \/><strong>Company Name:<\/strong> <a href=\"https:\/\/www.abnewswire.com\/companyname\/sakysteel.com_146476.html\" rel=\"nofollow\">Saky Steel CO., LTD<\/a><br \/><strong>Email:<\/strong> <a href=\"https:\/\/www.abnewswire.com\/email_contact_us.php?pr=what-is-grade-630-stainless-steel-strength-properties-and-uses-of-174ph\" rel=\"nofollow\">Send Email<\/a><br \/><strong>Country:<\/strong> China<br \/><strong>Website:<\/strong> <a href=\"https:\/\/www.sakysteel.com\/\" target=\"_blank\" rel=\"nofollow\">https:\/\/www.sakysteel.com\/<\/a><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.abnewswire.com\/press_stat.php?pr=what-is-grade-630-stainless-steel-strength-properties-and-uses-of-174ph\" alt=\"\" width=\"1px\" height=\"1px\" \/><\/p>\n","protected":false},"excerpt":{"rendered":"<p>As industries demand stronger and more corrosion-resistant materials, Grade 630 stainless steel,also known as 17-4PH stainless steel, has become one of the most widely used high-performance alloys.It offers an excellent combination of strength, toughness, and corrosion resistance, making it ideal &hellip; <a href=\"https:\/\/www.abnewswire.com\/pressreleases\/what-is-grade-630-stainless-steel-strength-properties-and-uses-of-174ph_816717.html\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[401,410,403,404,416],"tags":[],"class_list":["post-816717","post","type-post","status-publish","format-standard","hentry","category-Business","category-Manufacturing-Industry","category-UK","category-US","category-World"],"_links":{"self":[{"href":"https:\/\/www.abnewswire.com\/pressreleases\/wp-json\/wp\/v2\/posts\/816717","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.abnewswire.com\/pressreleases\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.abnewswire.com\/pressreleases\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.abnewswire.com\/pressreleases\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.abnewswire.com\/pressreleases\/wp-json\/wp\/v2\/comments?post=816717"}],"version-history":[{"count":0,"href":"https:\/\/www.abnewswire.com\/pressreleases\/wp-json\/wp\/v2\/posts\/816717\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.abnewswire.com\/pressreleases\/wp-json\/wp\/v2\/media?parent=816717"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.abnewswire.com\/pressreleases\/wp-json\/wp\/v2\/categories?post=816717"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.abnewswire.com\/pressreleases\/wp-json\/wp\/v2\/tags?post=816717"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}