{"id":103426,"date":"2021-07-07T14:26:59","date_gmt":"2021-07-07T13:26:59","guid":{"rendered":"https:\/\/staging.express.fr\/non-categorise\/melting-points\/"},"modified":"2026-02-11T14:38:08","modified_gmt":"2026-02-11T13:38:08","slug":"melting-points","status":"publish","type":"post","link":"https:\/\/staging.express.fr\/en\/pro-tips\/welding-brazing\/melting-points\/","title":{"rendered":"Melting points"},"content":{"rendered":"\nLe principal objectif pour r\u00e9ussir vos travaux de brasure<\/a> et de soudure<\/a> est d\u2019atteindre la meilleure performance m\u00e9canique possible. La temp\u00e9rature des points de fusion de chacun des mat\u00e9riaux que vous utilisez fait partie des \u00e9l\u00e9ments essentiels \u00e0 conna\u00eetre pour bien traiter vos \u00e9l\u00e9ments de base, ainsi que votre m\u00e9tal d\u2019apport, et utiliser les bonnes temp\u00e9ratures avec votre fer \u00e0 souder.\u00a0<\/span>\n

Qu\u2019est-ce que le point de fusion en soudure et en brasure ?<\/b><\/h2>\nLe point de fusion d\u2019un mat\u00e9riau correspond \u00e0 la temp\u00e9rature \u00e0 partir de laquelle il passe de l\u2019\u00e9tat solide \u00e0 l\u2019\u00e9tat liquide.<\/span>\n\nVous devez consid\u00e9rer la puret\u00e9 des mat\u00e9riaux que vous voulez souder ou braser. La liste des points de fusion donne les temp\u00e9ratures pour des m\u00e9taux purs. D\u00e8s lors que vous utilisez des alliages, vous devez prendre en compte les diff\u00e9rents mat\u00e9riaux qui le composent et qui poss\u00e8dent bien souvent des points de fusion diff\u00e9rents.\u00a0<\/span>\n\nIl est difficile de d\u00e9terminer le point de fusion d\u2019un alliage, car il ne suffit pas de faire une moyenne entre les diff\u00e9rents composants, d\u2019autant que les proportions varient d\u2019un alliage \u00e0 l\u2019autre. <\/span>La m\u00e9tallurgie permet, en \u00e9tablissant des diagrammes de phase, de conna\u00eetre les plages utilisables pour les brasures. Ces valeurs sont pr\u00e9cis\u00e9es sur les produits que vous achetez.\n

La diff\u00e9rence entre soudure et brasure<\/b><\/h2>\nBrasure et soudure sont deux op\u00e9rations diff\u00e9rentes.\u00a0<\/span>\n

La soudure<\/b><\/h3>\nPour effectuer une soudure, vous chauffez vos mat\u00e9riaux de base, ainsi que le m\u00e9tal d\u2019apport dans la plupart des proc\u00e9d\u00e9s, jusqu\u2019\u00e0 atteindre le point de fusion. Vous devez alors appliquer la temp\u00e9rature du point de fusion des m\u00e9taux que vous soudez entre eux.<\/span>\n\nIl est donc pr\u00e9f\u00e9rable que les diff\u00e9rents composants destin\u00e9s \u00e0 la soudure poss\u00e8dent des points de fusion proches les uns des autres. Notez que de fa\u00e7on impropre, il est qualifi\u00e9 de soudure des actions qui devraient \u00eatre appel\u00e9es “brasures” comme la soudure \u00e9tain par exemple. Il s’agit d’habitudes de langage des utilisateurs qu’il n’est pas opportun de relever au quotidien.<\/em>\n<\/span>\n

La brasure<\/b><\/h3>\nDans le cadre de la brasure, vous ne faites pas fusionner vos m\u00e9taux de base, mais seulement votre m\u00e9tal d\u2019apport. Il est donc imp\u00e9ratif que le point de fusion de votre m\u00e9tal d\u2019apport soit inf\u00e9rieur \u00e0 celui des m\u00e9taux que vous envisagez d\u2019assembler.\u00a0<\/span>\n\nVous pouvez utiliser le brasage tendre ou le brasage dur. Avec le premier, le point de fusion du m\u00e9tal d\u2019apport est inf\u00e9rieur \u00e0 450 \u00b0C, pour le second, la temp\u00e9rature \u00e0 atteindre est comprise entre 600 \u00b0C \u00e0 1000 \u00b0C.\u00a0\u00a0<\/span>\n\nPour le brasage tendre, le m\u00e9tal d\u2019apport le plus souvent choisi est l\u2019\u00e9tain qui poss\u00e8de le point de fusion le moins \u00e9lev\u00e9 des m\u00e9taux d\u2019apport les plus couramment utilis\u00e9s.\u00a0\u00a0<\/span>\n\nLorsque vous effectuez une brasure, votre m\u00e9tal d\u2019apport doit atteindre son point de fusion pour passer \u00e0 la phase liquide. Une fois mis au contact des deux pi\u00e8ces \u00e0 assembler, il va se r\u00e9pandre et se diffuser par capillarit\u00e9, c\u2019est-\u00e0-dire qu\u2019il s\u2019insinue comme au travers d\u2019un r\u00e9seau de minuscules canaux sur les m\u00e9taux de base.\u00a0<\/span>\n\nPour qu\u2019il puisse se diffuser sur l\u2019un et l\u2019autre des deux \u00e9l\u00e9ments \u00e0 braser, ceux-ci doivent \u00eatre parfaitement pr\u00e9par\u00e9s et nettoy\u00e9s. Toute marque de graisse ou toute asp\u00e9rit\u00e9 emp\u00eache la progression du m\u00e9tal d\u2019apport et fragilise la brasure.<\/span>\n\nPour bien pr\u00e9parer vos surfaces une fois qu\u2019elles sont nettoy\u00e9es et d\u00e9graiss\u00e9es, vous devez les frotter avec une surface abrasive, comme la toile \u00e9meri, qui va cr\u00e9er de minuscules rayures qui favorisent la progression du m\u00e9tal d\u2019apport et vous garantissent une brasure plus robuste et durable.<\/span>\n

Les points de fusion des principaux m\u00e9taux utilis\u00e9s en soudure ou en brasure<\/b><\/h2>\n \n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\n

Mat\u00e9riaux<\/b><\/p>\n<\/td>\n

Temp\u00e9rature de fusion<\/b><\/td>\n<\/tr>\n
\n

\u00c9tain<\/span><\/p>\n<\/td>\n

232 \u00b0C<\/span><\/td>\n<\/tr>\n
\n

Plomb<\/span><\/p>\n<\/td>\n

\n

327 \u00b0C<\/span><\/p>\n<\/td>\n<\/tr>\n

\n

Zinc<\/span><\/p>\n<\/td>\n

\n

419 \u00b0C<\/span><\/p>\n<\/td>\n<\/tr>\n

\n

Aluminium (pur)<\/span><\/p>\n<\/td>\n

\n

660 \u00b0C<\/span><\/p>\n<\/td>\n<\/tr>\n

\n

Bronze<\/span><\/p>\n<\/td>\n

\n

890 \u00b0C<\/span><\/p>\n<\/td>\n<\/tr>\n

\n

Laiton<\/span><\/p>\n<\/td>\n

\n

900 \u00b0C<\/span><\/p>\n<\/td>\n<\/tr>\n

\n

Argent<\/span><\/p>\n<\/td>\n

\n

961 \u00b0C<\/span><\/p>\n<\/td>\n<\/tr>\n

\n

Or<\/span><\/p>\n<\/td>\n

\n

1 064 \u00b0C<\/span><\/p>\n<\/td>\n<\/tr>\n

\n

Cuivre<\/span><\/p>\n<\/td>\n

\n

1 083 \u00b0C<\/span><\/p>\n<\/td>\n<\/tr>\n

\n

Inox<\/span><\/p>\n<\/td>\n

\n

1 400 \u00b0C<\/span><\/p>\n<\/td>\n<\/tr>\n

\n

Acier<\/span><\/p>\n<\/td>\n

\n

1 450 \u00b0C<\/span><\/p>\n<\/td>\n<\/tr>\n

\n

Nickel<\/span><\/p>\n<\/td>\n

\n

1 455 \u00b0C<\/span><\/p>\n<\/td>\n<\/tr>\n

\n

Fer (pur)<\/span><\/p>\n<\/td>\n

\n

1 553 \u00b0C<\/span><\/p>\n<\/td>\n<\/tr>\n

\n

Palladium<\/span><\/p>\n<\/td>\n

\n

1 555 \u00b0C<\/span><\/p>\n<\/td>\n<\/tr>\n

\n

Platine<\/span><\/p>\n<\/td>\n

\n

1 772 \u00b0C<\/span><\/p>\n<\/td>\n<\/tr>\n

\n

Fonte<\/span><\/p>\n<\/td>\n

\n

1 820 \u00b0C<\/span><\/p>\n<\/td>\n<\/tr>\n

Aluminium brut (allumine)<\/span><\/td>\n\n

1 835 \u00b0C<\/span><\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n

Produits associ\u00e9s<\/h2>\n
<\/div>
<\/div>\n

Products associated with this item available on express<\/h2>\n
<\/div>\n","protected":false},"excerpt":{"rendered":"

Le principal objectif pour r\u00e9ussir vos travaux de brasure et de soudure est d\u2019atteindre la meilleure performance m\u00e9canique possible. La temp\u00e9rature des points de fusion…<\/p>\n","protected":false},"author":2,"featured_media":102513,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"content-type":"","footnotes":""},"categories":[417,417],"tags":[],"class_list":["post-103426","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-welding-brazing"],"acf":[],"yoast_head":"\nAll about the different melting points of a material for soldering and brazing - Express<\/title>\n<meta name=\"description\" content=\"The melting point temperature of each of the materials you use is one of the most important things to know. 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