AISI 1015 Steel Sheet,Plate

AISI 1015 Steel Sheet/Plate, mock carburized at 915°C (1680°F) for 8 hours, 775°C (1430°F) reheat, water quenched, Product Information -:- For detailed product information, please contact sales. -: AISI 1015 Steel Sheet/Plate, mock carburized at 915°C (1680°F) for 8 hours, 775°C (1430°F) reheat, water quenched, Synonyms -:- For detailed product information, please contact sales. -:

AISI 1015 Steel, mock carburized at 915°C (1680°F) for 8 hours, 775°C (1430°F) reheat, water quenched, Product Information -:- For detailed product information, please contact sales. -: ## **Product Specification: AISI 1015 Low Carbon Steel, Simulated Core-Condition Test Specimen** ### **Product Designation** * **Standard Name:** AISI 1015 * **UNS Number:** G10150 * **Condition:** **Mock (or Pseudocarburized) & Heat Treated** * **Thermal Cycle:** 1. **Mock Carburize:** 915°C (1680°F) for 8 hours (inert atmosphere) 2. **Reheat:** 775°C (1430°F) 3. **Quench:** Water * **Key Feature:** A **specialized test material** representing the **worst-case core microstructure and properties** of a carburized AISI 1015 component. It simulates the grain growth and thermal history of the core without carbon addition, followed by a standard quench from an intercritical temperature. ### **Overview** This is **not a commercial product** but a **standardized test condition** used in materials engineering and quality assurance. The specified thermal process simulates the core of a part that has undergone a long carburizing cycle. The 8-hour soak at 915°C causes significant **austenite grain growth**. The subsequent reheat to 775°C (an intercritical temperature where ferrite and austenite coexist) refines the microstructure somewhat before a severe water quench produces a **brittle, high-strength martensitic core** with coarse prior austenite grains. This condition is used to evaluate the **inherent hardenability, core toughness, and grain growth tendency** of the steel in a controlled, repeatable manner, providing critical data for component design and failure analysis. --- ### **1. Chemical Composition (Typical % by Weight, AISI/SAE Standard)** The composition remains standard AISI 1015; the properties are dictated by the severe thermal cycle. | Element | Content (%) | Role & Effect in This Process | | :--- | :--- | :--- | | **Carbon (C)** | 0.13 - 0.18 | **Low core carbon.** Upon water quenching from 775°C, it forms a **low-carbon martensite** which is very hard but extremely brittle, with low impact resistance. This is the property of interest. | | **Manganese (Mn)** | 0.30 - 0.60 | Provides minimal hardenability in this lean alloy; the water quench is required to fully harden the core, indicating shallow hardenability. | | **Phosphorus (P)** | 0.040 max | Impurity. | | **Sulfur (S)** | 0.050 max | Impurity. | | **Iron (Fe)** | Balance | Forms the martensitic matrix. | **Microstructure:** **Coarse prior austenite grain boundaries** (from the 915°C soak) filled with a matrix of **low-carbon, plate martensite** (from the water quench). This structure has high hardness but **very poor toughness**. --- ### **2. Physical & Mechanical Properties (After Specified Thermal Cycle)** **A. Physical Properties (Estimated)** * **Density:** 7.87 g/cm³ * **Elastic Modulus (E):** ~200 GPa **B. Mechanical Properties (Typical & Indicative)** *These properties are for test comparison and are not design allowables for a real carburized part.* * **Core Hardness:** **45 - 55 HRC** (Very high for the low carbon content, due to full martensite from water quench). * **Ultimate Tensile Strength:** **1400 - 1650 MPa (203 - 239 ksi)** * **Yield Strength (0.2% Offset):** **1200 - 1450 MPa (174 - 210 ksi)** * **Elongation:** **< 5%** (Negligible ductility) * **Reduction of Area:** **< 10%** * **Impact Toughness (Charpy V-Notch):** **Extremely Low (5 - 15 J).** This is the **key measured parameter.** The combination of coarse grains and martensite results in severe embrittlement. * **Prior Austenite Grain Size:** Coarse, typically ASTM 0-3. Measured to assess grain growth resistance. --- ### **3. Product Applications & Purpose** This material condition exists solely for **testing, qualification, and research**. * **Material Lot Qualification:** Aerospace and automotive specifications (e.g., AMS, OEM standards) often require destructive testing of coupons processed through this or a similar "mock carburizing" cycle to certify a heat of steel before it can be used for critical gears or bearings. * **Core Property Database Generation:** Used to develop fundamental understanding of core fatigue strength, fracture toughness, and hardenability under simulated service thermal cycles. * **Grain Growth Studies:** The 8-hour soak at 915°C is a severe test of the steel's resistance to austenite grain growth, which is detrimental to toughness. * **Failure Analysis Benchmark:** Provides a baseline microstructure and property set for investigating field failures where core brittleness is suspected. * **Hardenability Testing (Jominy Correlation):** Serves as an extreme end-condition for correlating with end-quench hardenability data. --- ### **4. International Standards & Designations** | Standard System | Relevant Standard | Notes / Purpose | | :--- | :--- | :--- | | **SAE / AISI (USA)** | **SAE 1015** (Base Grade) | The test cycle is defined by the testing specification, not the material grade. | | **ASTM (USA)** | **ASTM A255 (Jominy Test), ASTM E112 (Grain Size), ASTM E23 (Impact Testing)** | The process creates specimens for testing under these standards. | | **AMS (Aerospace)** | **AMS 2300, AMS 2301, AMS 2759/3** | These premium aircraft steel specs frequently mandate **"melt-to-melt" testing** using pseudocarburizing cycles to verify grain size and core hardenability. | | **ISO** | **ISO 642:1999 (Steel — Hardenability test by end quenching)** | The mock carburizing test supplements Jominy data for specific applications. | | **Customer Specifications** | **Pratt & Whitney, GE, Airbus, Boeing** etc. | Major OEMs have proprietary versions of this test for their supply chain. | --- ### **Technical Significance of the Thermal Cycle** 1. **Mock Carburize (915°C for 8h):** Simulates the **time-at-temperature** of a deep case carburizing process. In an inert atmosphere, it causes **grain coarsening** and thermal conditioning without altering surface chemistry. This is the "worst-case" thermal exposure for the core. 2. **Reheat to 775°C:** This is an **intercritical reheat**. It partially refines the coarse austenite grains by starting the transformation to ferrite + austenite. It sets a consistent temperature for the final quench. 3. **Water Quench:** The most severe common quenchant. It is used to **ensure full martensite transformation in the core**, revealing the steel's maximum achievable core hardness and minimum toughness for this carbon content. It tests the **limiting hardenability**. 4. **Purpose:** To **isolate and test the core properties** independent of the case. A real carburized part has a carbon gradient; this test creates a uniform, low-carbon, fully hardened specimen to measure baseline core performance. ### **Summary** **AISI 1015 processed through the "mock carburize, reheat, water quench" cycle is a controlled metallurgical artifact for quality assurance and research.** It represents the **theoretical lower limit of core toughness** after a severe carburizing process. This condition is fundamental to high-reliability industries for qualifying material, predicting core-driven failure modes (like bending fatigue), and setting manufacturing specifications. It underscores the critical importance of **grain size control and core hardenability** in carburizing steels, even for a common grade like 1015. The data derived from specimens in this state directly informs the safe design and life prediction of critical power transmission components. -:- For detailed product information, please contact sales. -: AISI 1015 Steel, mock carburized at 915°C (1680°F) for 8 hours, 775°C (1430°F) reheat, water quenched, Specification Dimensions Size： Diameter 20-1000 mm Length <4762 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 1015 Steel, mock carburized at 915°C (1680°F) for 8 hours, 775°C (1430°F) reheat, water quenched, Properties -:- For detailed product information, please contact sales. -:

Applications of AISI 1015 Steel Sheet,Plate, mock carburized at 915°C (1680°F) for 8 hours, 775°C (1430°F) reheat, water quenched, -:- For detailed product information, please contact sales. -: Chemical Identifiers AISI 1015 Steel Sheet,Plate, mock carburized at 915°C (1680°F) for 8 hours, 775°C (1430°F) reheat, water quenched, -:- For detailed product information, please contact sales. -:

Packing of AISI 1015 Steel Sheet/Plate, mock carburized at 915°C (1680°F) for 8 hours, 775°C (1430°F) reheat, water quenched, -:- 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 Sheet/Plate 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 1233 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