AISI 1119 Steel Foil/Strip

AISI 1119 Steel Foil Product Information -:- For detailed product information, please contact sales. -: AISI 1119 Steel Foil Synonyms -:- For detailed product information, please contact sales. -:

AISI 1119 Steel Product Information -:- For detailed product information, please contact sales. -: ## **Product Data Sheet: AISI 1119 Steel** --- ### **1. Product Overview** **AISI 1119** is a low-carbon, **free-machining steel** belonging to the same family as AISI 1117 and 12L14, but distinguished by its **very high sulfur content**. This elevated sulfur level, typically ranging from 0.24% to 0.33%, is the primary feature that defines its performance characteristics. It is primarily supplied in **cold drawn** or **hot rolled** conditions, with cold drawn being the most common for precision machining applications. The primary design purpose of AISI 1119 is to deliver **exceptional machinability** at the expense of other properties such as weldability, transverse ductility, and forgeability. It is engineered for **high-speed, high-volume production** of non-critical parts where minimizing machining cost and maximizing tool life are the paramount concerns. **Key Characteristics of AISI 1119:** * **Outstanding Machinability:** The high sulfur content forms an abundance of manganese sulfide (MnS) inclusions that act as built-in chip breakers. This allows for very high cutting speeds, excellent surface finishes directly from the tool, and significantly extended tool life. * **Good Surface Finish (Cold Drawn):** When supplied cold drawn, it has a bright, smooth surface ideal for parts that will be plated or used as-machined. * **Low Cost per Machined Part:** Its ability to be machined quickly and with minimal tool wear translates to lower overall manufacturing costs for suitable applications. * **Poor Weldability and Formability:** The high sulfur content makes it extremely susceptible to hot cracking (hot shortness) if welded and reduces its ductility, especially in directions transverse to the rolling direction. --- ### **2. Chemical Composition (Standard % by Weight)** The composition is engineered for extreme machinability, with sulfur as the key differentiating element. | Element | Content (%) | Function & Implication | | :--- | :--- | :--- | | **Carbon (C)** | 0.14 - 0.20 | Provides minimal core strength; too low for effective heat treatment. | | **Manganese (Mn)** | 1.00 - 1.30 | Combines with sulfur to form the chip-breaking manganese sulfide (MnS) inclusions. Higher Mn helps control the morphology of the sulfides. | | **Phosphorus (P)** | ≤ 0.040 | Residual element, kept low. | | **Sulfur (S)** | **0.24 - 0.33** | **The Defining Element.** This very high level creates numerous MnS inclusions, giving 1119 its superior machinability but also causing significant anisotropy and poor weldability. | | **Iron (Fe)** | Balance | Base metal. | --- ### **3. Typical Physical & Mechanical Properties** *Properties are for cold drawn condition (most common). Hot rolled properties will be slightly lower in strength/hardness.* | Property | Typical Value (Cold Drawn) | Notes | | :--- | :--- | :--- | | **Tensile Strength** | 420 - 550 MPa (61,000 - 80,000 psi) | Low to moderate strength. | | **Yield Strength (0.2% Offset)** | 350 - 480 MPa (51,000 - 70,000 psi) | | | **Elongation (in 50 mm)** | 15% - 25% | Ductility is anisotropic (better longitudinally). | | **Hardness** | 137 - 183 HB | | | **Machinability Rating** | **~ 180%** (vs. AISI 1212 = 100%) | One of the highest ratings for a carbon steel. | | **Density** | ~7.87 g/cm³ | | --- ### **4. International Standards & Cross-References** | Standard System | Equivalent Designation | Applicable Specification | | :--- | :--- | :--- | | **ASTM / AISI (USA)** | AISI 1119 | ASTM A108 (Cold Finished), ASTM A29 (Hot Rolled) | | **SAE (USA)** | SAE 1119 | SAE J403 | | **UNS (USA)** | G11190 | - | | **DIN (Germany)** | **1.0715** (10S20) | Note: German S-grades (e.g., 10S20) have high sulfur but Mn levels differ. 1.0715 is a close functional equivalent. | | **JIS (Japan)** | SUM22** | JIS SUM22 has similar high sulfur (0.24-0.33%) and is the closest common equivalent. | | **EN (Europe)** | 10S20 (1.0715) | EN 10087 | **Note:** SUM22 is often considered the direct commercial equivalent. --- ### **5. Primary Applications** AISI 1119 is used almost exclusively for **non-structural, non-welded, non-heat-treated components** where machinability is the sole or primary driver. * **High-Volume Screw Machine Parts:** Nuts, bolts, fittings, bushings, spacers, and small shafts produced on Swiss-type and multi-spindle automatic screw machines. * **Electrical & Plumbing Fittings:** Connector bodies, coupling nuts, and valve components that are plated after machining. * **Automotive Non-Critical Parts:** Door lock components, sensor housings, trim clips, and various interior brackets. * **Consumer Hardware:** Knobs, fasteners, and decorative items. * **General Machined Components:** Any part requiring complex, fast machining where the part will not be subjected to high stress, impact, or welding. --- ### **6. Critical Processing & Handling Notes** * **Heat Treatment: NOT RECOMMENDED.** The high sulfur content makes it unsuitable for case hardening (carburizing) or through-hardening. Attempts will lead to poor surface integrity and brittle components. * **Machining: EXCELLENT.** This is its intended purpose. Use sharp tools, positive rake angles, and adequate coolant. Expect small, easily broken chips. * **Weldability: VERY POOR / NOT WELDABLE.** The high sulfur content guarantees solidification (hot) cracking. **Welding is prohibited** for any structural or pressure-containing application. * **Hot Working: NOT SUITABLE.** Prone to hot shortness (cracking) during forging or hot forming due to sulfur. * **Cold Forming: POOR.** Exhibits significant anisotropy; ductility is much lower in directions transverse to the rolling direction. Bending or forming can lead to cracking. * **Plating/Coating:** Machines to an excellent surface finish for plating (zinc, nickel, chrome). Proper cleaning to remove all cutting fluids is critical for adhesion. --- ### **7. Comparison with Similar Grades** * **vs. AISI 1117:** 1119 has **much higher sulfur** (~0.30% vs. ~0.10%). This gives 1119 better machinability but worse ductility, toughness, and weldability. * **vs. 12L14:** 12L14 contains lead (Pb) for even better machinability and chip control, plus higher phosphorus. 12L14 is generally considered the premium free-machining grade. 1119 is a lower-cost alternative with excellent, but slightly inferior, machinability. --- **Disclaimer:** AISI 1119 is a specialized material with severe limitations. Its use must be justified solely by machining economics. Always consult the supplier's certification, Safety Data Sheets (SDS), and ensure the design accommodates its poor weldability and formability. It is not a general-purpose steel. -:- For detailed product information, please contact sales. -: AISI 1119 Steel Specification Dimensions Size： Diameter 20-1000 mm Length <4949 mm Size:We can customized as required Standard： Per your request or drawing We can customized as required Properties（Theoretical） Chemical Composition -:- For detailed product information, please contact sales. -: AISI 1119 Steel Properties -:- For detailed product information, please contact sales. -:

Applications of AISI 1119 Steel Foil -:- For detailed product information, please contact sales. -: Chemical Identifiers AISI 1119 Steel Foil -:- For detailed product information, please contact sales. -:

Packing of AISI 1119 Steel Foil/Strip -:- For detailed product information, please contact sales. -: Standard Packing: -:- For detailed product information, please contact sales. -: Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and Steel Foil/Strip drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Solutions are packaged in polypropylene, plastic or glass jars up to palletized 1420 gallon liquid totes Special package is available on request. E FORUs’ is carefully handled to minimize damage during storage and transportation and to preserve the quality of our products in their original condition