Pourquoi choisir HDC pour des produits personnalisés en acier au carbone 12L14
HDC possède plus d’une décennie d’expérience dans le domaine des composants métalliques sur mesure. Nous possédons des machines-outils de précision à 4 et 5 axes, des centres d'usinage CNC automatisés et une équipe de conception et de production professionnelle. Nous pouvons vous fournir divers processus d'usinage, notamment le fraisage CNC, le tournage CNC, la découpe laser, le moulage de métaux, etc., pour fabriquer à la perfection vos composants en acier au carbone 12L14, adaptés à vos besoins spécifiques.
Dans le domaine de l'acier au carbone 12L14, notre expertise garantit la production de composants précis et de qualité supérieure. Reconnu pour son extraordinaire maniabilité, le 12L14 constitue la sélection optimale pour les conceptions complexes. L’équipe chevronnée de HDC optimise habilement les paramètres d’usinage, garantissant une précision dimensionnelle sans faille et une finition de surface impeccable. Que votre projet implique un filetage complexe, un contour précis ou un fraisage méticuleux, nous nous engageons à l'efficacité et à un standard d'excellence.
Au-delà du domaine de l'usinage, HDC se distingue par la compréhension des attributs distinctifs de l'acier au carbone 12L14. Ces connaissances spécialisées orientent notre processus de conception coopérative, transmettant des informations inestimables et garantissant que nos composants non seulement respectent, mais dépassent les références de l'industrie. Avec HDC, attendez-vous à des composants en acier au carbone 12L14 méticuleusement façonnés avec précision, durabilité et une attention particulière portée aux détails, s'adaptant et dépassant les stipulations de votre projet.
Aperçu
12L14 est un alliage d'acier de décolletage connu pour son excellente usinabilité. L'acier au carbone 12L14 est un choix populaire pour les applications qui exigent une usinabilité et une précision exceptionnelles. Sa composition, avec ajout de soufre et de phosphore, facilite un usinage efficace, ce qui en fait un matériau précieux pour la production de petits composants complexes dans diverses industries.

Qu’est-ce que l’acier au carbone ?
Acier Carbone is a steel with iron and carbon as the most viable, while other elements are at lower quantity. Carbon steel with mean carbon content, i.e from 0.05% to 2.0%, is produced according to the grade and the application. Carbon steel is regarded for its strength, hardness, and long-term endurance, which makes it to be widely used in different industries like construction, manufacturing, automobile, and infrastructure. The steel is divided into four types based on its carbon content and characteristics, such as low carbon steel (mild steel), medium carbon steel, and high carbon steel. Besides the fact that carbon steel can be further alloyed (mixed) with elements such as manganese, silicon, and sulfur to improve certain attributes like strength, ductility and machinability. Since it is one of the strongest and most affordable types of steel used in the manufacture of parts, components, machinery parts, pipes, and auto frames and other applications.
Quelles sont les caractéristiques de l’acier au carbone 12L14 ?

12L14 known as a high-sulfur and lead containing steel is famous for its high machinability. This addition of manganese sulfides to the standard Fe grade composition will give chip breaker characteristics during the metal cutting process and reduce the wear of the cutter drastically to produce excellent surface finish in the machined parts. This steel is not as strong as some other carbon steels but still provides excellent strength as well as ductility for use in different stainless steel applications. With the compliance to the conventional procedures it can be welded, but some precautions are required, as the element is sulfur and lead containing. This steel is cost-effective and is known for its wide use in automotive components, bushings, fittings, and fasteners. Therefore its demands are high due to the precise machining and high production capabilities.
Quelle est la base de dénomination de l’acier au carbone 12L14 ?
The naming basis for 12L14 carbon steel is derived from its composition and conformation to the standardization in AISI (American iron and steel institute) system. The “12” in 12L14 is for the average carbon content, approximately 0.12%. The ′L′ indicates that the other element which is lead is there in the alloy. To sum up, the “14” figures shows the sulphur approximately 0.14%. A numerical designation that is alpha-numeric in nature offers a standardized method of identifying and categorizing carbon steels based on their composition and properties. This enables communication and understanding to be improved amongst the industry players.

Composition chimique de l'acier au carbone 12L14
| Élément | Contenu (%) |
| Fer, Fe | 97,91 – 98,7 |
| Manganèse, Mn | 0,85 – 1,15 |
| Soufre, S | 0,260 – 0,35 |
| Plomb, Pb | 0,15 – 0,35 |
| Carbone, C | 0.15 |
| Phosphore, P | 0,040 – 0,090 |
L'influence de la composition de l'acier au carbone 12L14 sur ses propriétés

Carbon steel that is 12L14 is widely used as base material because it can be used in variety of applications. It contains around 0.12 %, of the carbon that imparts strength and hardness to it, yet retains its moldability. Manganese contributes to the hardenability and strength of steel, while sulfur, about 0.15%, improves machinability by forming manganese sulfides reducing the production costs and prolonging service life of any tools. Lead is also added to further enhance machinability through acting as the lubricant, thus it is able to reduce friction between the cutting tool and the work piece. The composition of 12L14 is precisely controlled to yield outstanding machinability characteristics making it perfect for machining oriented applications in industry where precision is premium and production volumes are high thus suitable for automotive components and fasteners.
Propriétés physiques de l'acier au carbone 12L14
| Propriétés | Métrique | Impérial |
| Densité | 7,87 g/cm3 | 0,284 lb/po³ |
Propriétés mécaniques de l'acier au carbone 12L14

| Propriétés | Métrique | Impérial |
| Résistance à la traction en acier 12L14 | 540 MPa | 78300 psi |
| Limite d'élasticité | 415 MPa | 60200 psi |
| Module de masse (typique pour l'acier) | 140 GPa | 20300 ksi |
| Module de cisaillement (typique pour l'acier) | 80,0 GPa | 11600 ksi |
| Module d'élasticité | 190-210 GPa | 27557-30458 ksi |
| Coefficient de Poisson | 0.27-0.30 | 0.27-0.30 |
| Allongement à la rupture | 10% | 10% |
| Réduction de la superficie | 35% | 35% |
| Dureté, Brinell | 163 | 163 |
| Dureté, Knoop (convertie à partir de la dureté Brinell) | 184 | 184 |
| Dureté, Rockwell B (convertie à partir de la dureté Brinell) | 84 | 84 |
| Dureté, Vickers (convertie à partir de la dureté Brinell) | 170 | 170 |
| Usinabilité (basée sur une usinabilité de 100 pour l'acier AISI 1212) | 160 | 160 |
Propriétés thermiques de l'acier au carbone 12L14
| Propriétés | Métrique | Impérial |
| Coefficient de dilatation thermique (@ 20°C/68°F, acier typique) | 11,5 µm/m°C | 6,39 µpo/po°F |
| Conductivité thermique (acier typique) | 51,9 W/mK | 360 BTU po/h.pi².°F |
Matériaux équivalents à l'acier au carbone 12L14

| Numéro UNS | G12144 |
| Nom américain | AISI 12L14, 12L13, 12L15 selon ASTM A29, ASTM A510, ASTM A519, ASTM A576, SAE J403 |
| FR nom | 11SMnPb37, 11SMnPb30, 9SMnPb28 selon BS EN 10087, BS EN 10277 ; S300Pb selon NF A35 561 |
| Numéro FR | 1.0737, 1.0718, 1.9718 |
| Nom JIS (japonais) | SUM24L à JIS G4804 |
Quelles méthodes de traitement conviennent à l’acier au carbone 12L14 ?
12L14 steels are highly versatile in manufacturing because they machine well with ease and have moderate strength. Especially, it mainly masters substantial operations including turning, milling, drilling, and threading thanks to its lead and sulfur richness which can chop chips and decrease tool wear. Furthermore, it further can be formed by cold forming processes as for example bending and stamping without preheat and annealing. However, efforts must be made to avoid it due it its relatively higher sulfur and lead content. Heat treatment processes, which are used to alter properties, are usually the exception since 12L14 is rarely hardened by this process. Overall, 12L14 carbon steel is the material of choice where high precision in machining is required and strength is also a critical factor.
Quelles sont les limites de l’acier au carbone 12L14 ?

The extremely precision of machinability plus the moderate strength make 12L14 carbon steel have some limitations. Carbon steel, which is characterized by comparatively low strength and toughness, is not very suitable for applications demanding high strength or wear resistance. Furthermore, the sulphur that is useful for machinability may cause the metal to become brittle, which may result into such problems as cracking. Weldability is dealt with due to its sulfur and lead content which is higher than the usual, as it requires some particular techniques in order not to cause weld cracking and/ or poor quality. In addition, 12L14 steel has very limited heat treatability and the use of additional protection measures is needed to mitigate corrosion in some special environments. In that way, the main advantages of this technology for machining component parts should be weighed up against its limitations for materials selection.






