{"id":4180,"date":"2026-10-09T06:33:32","date_gmt":"2026-10-09T06:33:32","guid":{"rendered":"https:\/\/www.tgsteels.com\/nickel-alloys\/alloy-718\/"},"modified":"2026-10-09T06:33:32","modified_gmt":"2026-10-09T06:33:32","slug":"alloy-718","status":"publish","type":"page","link":"https:\/\/www.tgsteels.com\/en\/nickel-alloys\/alloy-718\/","title":{"rendered":"Alloy 718"},"content":{"rendered":"[vc_row type=”full_width_background” full_screen_row_position=”middle” column_margin=”default” column_direction=”default” column_direction_tablet=”default” column_direction_phone=”default” bg_image=”3315″ bg_position=”center center” background_image_loading=”default” bg_repeat=”no-repeat” scene_position=”center” text_color=”light” text_align=”left” row_border_radius=”none” row_border_radius_applies=”bg” overflow=”visible” overlay_strength=”0.3″ gradient_direction=”left_to_right” shape_divider_position=”bottom” bg_image_animation=”none” parallax_bg=”true” parallax_bg_speed=”fast” gradient_type=”default” shape_type=””][vc_column column_padding=”no-extra-padding” column_padding_tablet=”inherit” column_padding_phone=”inherit” column_padding_position=”all” column_element_direction_desktop=”default” column_element_spacing=”default” desktop_text_alignment=”default” tablet_text_alignment=”default” phone_text_alignment=”default” background_color_opacity=”1″ background_hover_color_opacity=”1″ column_backdrop_filter=”none” column_shadow=”none” column_border_radius=”none” column_link_target=”_self” column_position=”default” gradient_direction=”left_to_right” overlay_strength=”0.3″ width=”1\/1″ tablet_width_inherit=”default” animation_type=”default” bg_image_animation=”none” border_type=”simple” column_border_width=”none” column_border_style=”solid” column_padding_type=”default” gradient_type=”default”][divider line_type=”No Line” custom_height=”450″][vc_column_text css=”” text_direction=”default”]\n

Alloy 718 (UNS N07718, 2.4668)<\/span><\/h1>\n[\/vc_column_text][divider line_type=”No Line” custom_height=”50″][\/vc_column][\/vc_row][vc_row type=”in_container” full_screen_row_position=”middle” column_margin=”default” column_direction=”default” column_direction_tablet=”default” column_direction_phone=”default” scene_position=”center” bottom_padding=”60″ text_color=”dark” text_align=”left” row_border_radius=”none” row_border_radius_applies=”bg” overflow=”visible” overlay_strength=”0.3″ gradient_direction=”left_to_right” shape_divider_position=”bottom” bg_image_animation=”none” gradient_type=”default” shape_type=””][vc_column column_padding=”no-extra-padding” column_padding_tablet=”inherit” column_padding_phone=”inherit” column_padding_position=”all” column_element_direction_desktop=”default” column_element_spacing=”default” desktop_text_alignment=”default” tablet_text_alignment=”default” phone_text_alignment=”default” background_color_opacity=”1″ background_hover_color_opacity=”1″ column_backdrop_filter=”none” column_shadow=”none” column_border_radius=”none” column_link_target=”_self” column_position=”default” gradient_direction=”left_to_right” overlay_strength=”0.3″ width=”1\/1″ tablet_width_inherit=”default” animation_type=”default” bg_image_animation=”none” border_type=”simple” column_border_width=”none” column_border_style=”solid”][vc_column_text css=”” text_direction=”default”]\n
\n

General information<\/h3>\n

Alloy 718 is a precipitation-hardening nickel-chromium-iron superalloy, characterized by high strength, excellent corrosion resistance, and exceptional weldability up to 704\u00b0C (1299\u00b0F)<\/em>. It is widely used in aerospace, oil & gas, and industrial high-temperature applications.<\/p>\n

Applications<\/h3>\n

Industrial<\/h4>\n

Aerospace, Power Generation, Oil & Gas, Chemical Processing, Automotive & Industrial, etc.<\/p>\n

Features<\/h3>\n

High temperature strength<\/h4>\n

Outstanding creep and rupture strength up to 704\u00b0C.<\/p>\n

Weldability<\/h4>\n

Excellent resistance to post-weld cracking.<\/p>\n

Corrosion resistance<\/h4>\n

Good oxidation resistance up to 980\u00b0C; resistant to sour gas (H2<\/sub>S \/ CO2<\/sub> )<\/em> environments.<\/p>\n

Material<\/h3>\n

Alloy 718 \/ UNS N07718 \/ 2.4668<\/p>\n

Surface<\/h3>\n

Bright annealed \/ Polishing<\/p>\n

Package<\/h3>\n

Wooden case \/ Plywood case<\/p>\n<\/div>\n[\/vc_column_text][\/vc_column][\/vc_row][vc_row type=”in_container” full_screen_row_position=”middle” column_margin=”default” column_direction=”default” column_direction_tablet=”default” column_direction_phone=”default” scene_position=”center” bottom_padding=”60″ text_color=”dark” text_align=”left” row_border_radius=”none” row_border_radius_applies=”bg” overflow=”visible” overlay_strength=”0.3″ gradient_direction=”left_to_right” shape_divider_position=”bottom” bg_image_animation=”none” gradient_type=”default” shape_type=””][vc_column column_padding=”no-extra-padding” column_padding_tablet=”inherit” column_padding_phone=”inherit” column_padding_position=”all” column_element_direction_desktop=”default” column_element_spacing=”default” desktop_text_alignment=”default” tablet_text_alignment=”default” phone_text_alignment=”default” background_color_opacity=”1″ background_hover_color_opacity=”1″ column_backdrop_filter=”none” column_shadow=”none” column_border_radius=”none” column_link_target=”_self” column_position=”default” gradient_direction=”left_to_right” overlay_strength=”0.3″ width=”1\/1″ tablet_width_inherit=”default” animation_type=”default” bg_image_animation=”none” border_type=”simple” column_border_width=”none” column_border_style=”solid”][vc_column_text css=”” text_direction=”default”]\n

\n

Chemical composition (Nominal)<\/em> %<\/h3>\n<\/div>\n\n\n\n\n\n
Grade<\/th>\nC<\/th>\nSi<\/th>\nMn<\/th>\nP<\/th>\nS<\/th>\nCr<\/th>\nNi<\/th>\nCu<\/th>\n<\/tr>\n<\/thead>\n
Alloy 718<\/td>\n0.08<\/td>\n0.35<\/td>\n0.35<\/td>\n0.015<\/td>\n0.015<\/td>\n17-21<\/td>\n50-55<\/td>\n0.3<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n\n\n\n\n
<\/th>\nMo<\/th>\nTi<\/th>\nNb<\/th>\nB<\/th>\nCo<\/th>\nAl<\/th>\n<\/tr>\n<\/thead>\n
<\/td>\n2.8-3.3<\/td>\n0.65-1.15<\/td>\n4.75-5.5<\/td>\n0.006<\/td>\n1<\/td>\n0.2-0.8<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\n

Physical properties<\/h3>\n<\/div>\n\n\n\n\n
Density<\/th>\n8.19 g\/cm3<\/sup> (0.306 lb\/in3<\/sup>)<\/em><\/td>\n<\/tr>\n
Hardness<\/th>\n36-44 HRC<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\n

Heat treatment<\/h3>\n<\/div>\n\n\n\n\n\n
Recommended Solution Treatment<\/th>\nPrecipitation Hardening Treatment<\/th>\n<\/tr>\n<\/thead>\n
1700 to 1850\u00b0F (924 to 1010\u00b0C)<\/em>, hold 1\/2 h min, cool at rate equivalent to air cool or faster.<\/td>\n1325 \u00b1 25\u00b0F (718 \u00b1 14\u00b0C)<\/em>, hold at temperature for 8 h, furnace cool to 1150 \u00b1 25\u00b0F (621 \u00b1 14\u00b0C)<\/em>, hold until total precipitation heat treatment time has reached 18 h, air cool.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n[\/vc_column_text][\/vc_column][\/vc_row][vc_row type=”in_container” full_screen_row_position=”middle” column_margin=”default” column_direction=”default” column_direction_tablet=”default” column_direction_phone=”default” scene_position=”center” bottom_padding=”60″ text_color=”dark” text_align=”left” row_border_radius=”none” row_border_radius_applies=”bg” overflow=”visible” overlay_strength=”0.3″ gradient_direction=”left_to_right” shape_divider_position=”bottom” bg_image_animation=”none” gradient_type=”default” shape_type=””][vc_column column_padding=”no-extra-padding” column_padding_tablet=”inherit” column_padding_phone=”inherit” column_padding_position=”all” column_element_direction_desktop=”default” column_element_spacing=”default” desktop_text_alignment=”default” tablet_text_alignment=”default” phone_text_alignment=”default” background_color_opacity=”1″ background_hover_color_opacity=”1″ column_backdrop_filter=”none” column_shadow=”none” column_border_radius=”none” column_link_target=”_self” column_position=”default” gradient_direction=”left_to_right” overlay_strength=”0.3″ width=”1\/1″ tablet_width_inherit=”default” animation_type=”default” bg_image_animation=”none” border_type=”simple” column_border_width=”none” column_border_style=”solid”][vc_column_text css=”” text_direction=”default”]\n
\n

Flat and round bar<\/h3>\n

Key standards<\/h4>\n

AMS 5662, 5663, 5664, 5596, 5832 | ASTM B637, B670 | ASME SB637<\/p>\n

Mechanical properties<\/h4>\n<\/div>\n\n\n\n\n\n
Heat Treatment<\/th>\nTensile Strength, min, psi (MPa)<\/em><\/th>\nYield Strength, min. (0.2% offset)<\/em>, min, psi (MPa)<\/em><\/th>\nElongation in 2 in. (50 mm)<\/em> or 4D, min, %<\/th>\nReduction of Area, min, %<\/th>\n<\/tr>\n<\/thead>\n
Solution + precipitation harden<\/th>\n185000 (1275)<\/em><\/td>\n150000 (1034)<\/em><\/td>\n12<\/td>\n15<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n[\/vc_column_text][\/vc_column][\/vc_row][vc_row type=”in_container” full_screen_row_position=”middle” column_margin=”default” column_direction=”default” column_direction_tablet=”default” column_direction_phone=”default” scene_position=”center” bottom_padding=”120″ text_color=”dark” text_align=”left” row_border_radius=”none” row_border_radius_applies=”bg” overflow=”visible” overlay_strength=”0.3″ gradient_direction=”left_to_right” shape_divider_position=”bottom” bg_image_animation=”none” gradient_type=”default” shape_type=””][vc_column column_padding=”no-extra-padding” column_padding_tablet=”inherit” column_padding_phone=”inherit” column_padding_position=”all” column_element_direction_desktop=”default” column_element_spacing=”default” desktop_text_alignment=”default” tablet_text_alignment=”default” phone_text_alignment=”default” background_color_opacity=”1″ background_hover_color_opacity=”1″ column_backdrop_filter=”none” column_shadow=”none” column_border_radius=”none” column_link_target=”_self” column_position=”default” gradient_direction=”left_to_right” overlay_strength=”0.3″ width=”1\/1″ tablet_width_inherit=”default” animation_type=”default” bg_image_animation=”none” border_type=”simple” column_border_width=”none” column_border_style=”solid”][vc_column_text css=”” text_direction=”default”]\n
\n

Download the Alloy 718 flat and round bar datasheet (PDF)<\/strong><\/a><\/p>\n

More grades: Nickel Alloys<\/a>. Where to buy: Service Network<\/a>.<\/p>\n<\/div>\n[\/vc_column_text][\/vc_column][\/vc_row]\n","protected":false},"excerpt":{"rendered":"

[vc_row type=”full_width_background” full_screen_row_position=”middle” column_margin=”default” column_direction=”default” column_direction_tablet=”default” column_direction_phone=”default” bg_image=”3315″ bg_position=”center center” background_image_loading=”default” bg_repeat=”no-repeat” scene_position=”center” text_color=”light” text_align=”left” row_border_radius=”none” row_border_radius_applies=”bg” overflow=”visible” overlay_strength=”0.3″ gradient_direction=”left_to_right” shape_divider_position=”bottom” bg_image_animation=”none” parallax_bg=”true” parallax_bg_speed=”fast” gradient_type=”default” shape_type=””][vc_column column_padding=”no-extra-padding” column_padding_tablet=”inherit” column_padding_phone=”inherit” column_padding_position=”all”…<\/p>\n","protected":false},"author":6,"featured_media":0,"parent":3312,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"inline_featured_image":false,"footnotes":""},"class_list":["post-4180","page","type-page","status-publish"],"_links":{"self":[{"href":"https:\/\/www.tgsteels.com\/en\/wp-json\/wp\/v2\/pages\/4180","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.tgsteels.com\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.tgsteels.com\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.tgsteels.com\/en\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/www.tgsteels.com\/en\/wp-json\/wp\/v2\/comments?post=4180"}],"version-history":[{"count":0,"href":"https:\/\/www.tgsteels.com\/en\/wp-json\/wp\/v2\/pages\/4180\/revisions"}],"up":[{"embeddable":true,"href":"https:\/\/www.tgsteels.com\/en\/wp-json\/wp\/v2\/pages\/3312"}],"wp:attachment":[{"href":"https:\/\/www.tgsteels.com\/en\/wp-json\/wp\/v2\/media?parent=4180"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}