{"id":1401,"date":"2026-04-02T16:09:05","date_gmt":"2026-04-02T08:09:05","guid":{"rendered":"https:\/\/www.jycomat.com\/?post_type=product&p=1401"},"modified":"2026-04-02T16:10:06","modified_gmt":"2026-04-02T08:10:06","slug":"aisi-4340-steel-36crnimo4-1-6511-en24-817m40-sncm439","status":"publish","type":"product","link":"https:\/\/www.jycomat.com\/hu\/termek\/aisi-4340-steel-36crnimo4-1-6511-en24-817m40-sncm439\/","title":{"rendered":"AISI 4340 ac\u00e9l \/ 36CrNiMo4 \/ 1.6511 \/ EN24 \/ 817M40 \/ SNCM439"},"content":{"rendered":"
\n\t\t\t\t
\n\t\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t

AISI 4340 ac\u00e9l specifik\u00e1ci\u00f3 \u00e9s a vonatkoz\u00f3 szabv\u00e1nyok<\/h3>
Orsz\u00e1g<\/td>USA<\/td>Nagy-Britannia<\/td>Nagy-Britannia<\/td>Jap\u00e1n<\/td><\/tr>
Standard<\/td>ASTM A29<\/td>EN 10250<\/td>BS 970<\/td>JIS G4103<\/td><\/tr>
Fokozatok<\/td>4340<\/td>36CrNiMo4\/
1.6511<\/td>		EN24\/817M40<\/td>SNCM 439\/SNCM8<\/td><\/tr><\/tbody><\/table><\/div>

ASTM 4340 ac\u00e9lok \u00e9s egyen\u00e9rt\u00e9k\u0171 anyagok k\u00e9miai \u00f6sszet\u00e9tele<\/h3>
Standard<\/td>Fokozat<\/td>C<\/td>Mn<\/td>P<\/td>S<\/td>Si<\/td>Ni<\/td>Cr<\/td>Mo<\/td><\/tr>
ASTM A29<\/td>4340<\/td>0.38-0.43<\/td>0.60-0.80<\/td>0.035<\/td>0.040<\/td>0.15-0.35<\/td>1.65-2.00<\/td>0.70-0.90<\/td>0.20-0.30<\/td><\/tr>
EN 10250<\/td>36CrNiMo4\/
1.6511<\/td>		0.32-0.40<\/td>0.50-0.80<\/td>0.035<\/td>0.035<\/td>\u22660.40<\/td>0.90-1.20<\/td>0.90-1.2<\/td>0.15-0.30<\/td><\/tr>
BS 970<\/td>EN24\/817M40<\/td>0.36-0.44<\/td>0.45-0.70<\/td>0.035<\/td>0.040<\/td>0.1-0.40<\/td>1.3-1.7<\/td>1.00-1.40<\/td>0.20-0.35<\/td><\/tr>
JIS G4103<\/td>SNCM 439\/SNCM8<\/td>0.36-0.43<\/td>0.60-0.90<\/td>0.030<\/td>0.030<\/td>0.15-0.35<\/td>1.60-2.00<\/td>0.60-1.00<\/td>0.15-0.30

<\/td><\/tr><\/tbody><\/table><\/div>

AISI Alloy 4340 ac\u00e9l mechanikai tulajdons\u00e1gai<\/h3>
Mechanikai tulajdons\u00e1gok

(h\u0151kezelt \u00e1llapotban)<\/p><\/td>

Felt\u00e9tel<\/td>Rendelkez\u0151 r\u00e9sz
mm<\/td>		Szak\u00edt\u00f3szil\u00e1rds\u00e1g MPa<\/td>Ny\u00fal\u00e1sszil\u00e1rds\u00e1g
MPa<\/td>		Elong.
%<\/td>		Izod Impact
J<\/td>		Brinell
Kem\u00e9nys\u00e9g<\/td><\/tr>
T<\/td>250<\/td>850-1000<\/td>635<\/td>13<\/td>40<\/td>248-302<\/td><\/tr>
T<\/td>150<\/td>850-1000<\/td>665<\/td>13<\/td>54<\/td>248-302<\/td><\/tr>
U<\/td>100<\/td>930-1080<\/td>740<\/td>12<\/td>47<\/td>269-331<\/td><\/tr>
\u00a0<\/td><\/tr>
V<\/td>63<\/td>1000-1150<\/td>835<\/td>12<\/td>47<\/td>293-352<\/td><\/tr>
W<\/td>30<\/td>1080-1230<\/td>925<\/td>11<\/td>41<\/td>311-375<\/td><\/tr>
X<\/td>30<\/td>1150-1300<\/td>1005<\/td>10<\/td>34<\/td>341-401<\/td><\/tr>
\u00a0<\/td><\/tr>
Y<\/td>30<\/td>1230-1380<\/td>1080<\/td>10<\/td>24<\/td>363-429<\/td><\/tr>
Z<\/td>30<\/td>1555-<\/td>1125<\/td>5<\/td>10<\/td>444-<\/td><\/tr><\/tbody><\/table><\/div>

Termikus tulajdons\u00e1gok<\/h3>
Tulajdons\u00e1gok<\/td>Metrikus<\/td>Imperial<\/td><\/tr>
H\u0151t\u00e1gul\u00e1si egy\u00fctthat\u00f3 (20\u00b0C\/68\u00b0F, olajban edzett minta, 600\u00b0C (1110\u00b0F) h\u0151m\u00e9rs\u00e9kleten)<\/td>12,3 \u00b5m\/m\u00b0C<\/td>6,83 \u00b5in\/in\u00b0F<\/td><\/tr>
H\u0151vezet\u0151 k\u00e9pess\u00e9g (tipikus ac\u00e9l)<\/td>44,5 W\/mK<\/td>309 BTU in\/hr.ft\u00b2.\u00b0F<\/td><\/tr><\/tbody><\/table><\/div>

4340 \u00f6tv\u00f6z\u00f6tt ac\u00e9l kov\u00e1csol\u00e1sa<\/h3>

El\u0151sz\u00f6r meleg\u00edtse el\u0151 a 4340-es ac\u00e9lt, meleg\u00edtse fel 1150\u00b0C - 1200\u00b0C-ra a kov\u00e1csol\u00e1shoz, tartsa addig, am\u00edg a h\u0151m\u00e9rs\u00e9klet egyenletes nem lesz az eg\u00e9sz szelv\u00e9nyben.<\/p>

850 \u00b0C alatt nem szabad kov\u00e1csolni. A 4340 j\u00f3 kov\u00e1csol\u00e1si tulajdons\u00e1gokkal rendelkezik, de a h\u0171t\u00e9s sor\u00e1n \u00f3vatosnak kell lenni, mivel az ac\u00e9l reped\u00e9sre hajlamos. A kov\u00e1csol\u00e1st k\u00f6vet\u0151en a munkadarabot a lehet\u0151 leglassabban kell leh\u0171teni. A h\u0171t\u00e9s homokban vagy sz\u00e1raz m\u00e9szben stb. aj\u00e1nlott.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"

Az AISI 4340 ac\u00e9l egy k\u00f6zepes sz\u00e9ntartalm\u00fa, alacsonyan \u00f6tv\u00f6z\u00f6tt ac\u00e9l, amely sz\u00edv\u00f3ss\u00e1g\u00e1r\u00f3l \u00e9s szil\u00e1rds\u00e1g\u00e1r\u00f3l ismert viszonylag nagy szelv\u00e9nyekben. Az AISI 4340 szint\u00e9n a nikkel-kr\u00f3m-molibd\u00e9n ac\u00e9lok egyik fajt\u00e1ja. A 4340 \u00f6tv\u00f6z\u00f6tt ac\u00e9lt \u00e1ltal\u00e1ban 930 - 1080 Mpa szak\u00edt\u00f3szil\u00e1rds\u00e1gi tartom\u00e1nyban edzett \u00e9s l\u00e1gy\u00edtott \u00e1llapotban sz\u00e1ll\u00edtj\u00e1k.<\/p>","protected":false},"featured_media":1402,"comment_status":"closed","ping_status":"closed","template":"","meta":{"site-sidebar-layout":"no-sidebar","site-content-layout":"","ast-site-content-layout":"full-width-container","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"disabled","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}}},"product_brand":[],"product_cat":[22],"product_tag":[64],"class_list":["post-1401","product","type-product","status-publish","has-post-thumbnail","product_cat-mold-steel","product_tag-mold-steel","desktop-align-left","tablet-align-left","mobile-align-left","first","instock","shipping-taxable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/www.jycomat.com\/hu\/wp-json\/wp\/v2\/product\/1401","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.jycomat.com\/hu\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.jycomat.com\/hu\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/www.jycomat.com\/hu\/wp-json\/wp\/v2\/comments?post=1401"}],"version-history":[{"count":0,"href":"https:\/\/www.jycomat.com\/hu\/wp-json\/wp\/v2\/product\/1401\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.jycomat.com\/hu\/wp-json\/wp\/v2\/media\/1402"}],"wp:attachment":[{"href":"https:\/\/www.jycomat.com\/hu\/wp-json\/wp\/v2\/media?parent=1401"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.jycomat.com\/hu\/wp-json\/wp\/v2\/product_brand?post=1401"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.jycomat.com\/hu\/wp-json\/wp\/v2\/product_cat?post=1401"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.jycomat.com\/hu\/wp-json\/wp\/v2\/product_tag?post=1401"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}