AISI 1095 Steel, oil quenched

AISI 1095 Steel, oil quenched from 800°C (1475°F), tempered at 480°C (900°F) Product Information -:- For detailed product information, please contact sales. -: AISI 1095 Steel, oil quenched from 800°C (1475°F), tempered at 480°C (900°F) Synonyms -:- For detailed product information, please contact sales. -:

AISI 1095 Steel, oil quenched from 800°C (1475°F), tempered at 480°C (900°F) Product Information -:- For detailed product information, please contact sales. -: ### **Product Data Sheet: AISI 1095 Steel - Oil Quenched (800°C) & Tempered at 480°C (900°F)** #### **1. Overview: A Specific Spring/High-Strength Temper for Maximum Performance** This datasheet describes **AISI 1095 steel in a fully heat-treated service condition**: oil-quenched from 800°C (1475°F) and tempered at 480°C (900°F). This treatment protocol is meticulously designed to balance the extreme hardness potential of AISI 1095 with critical toughness and elastic properties. The slightly lower austenitizing temperature (800°C vs. a more common 815°C) helps control grain growth in this very high-carbon steel, while the 480°C temper produces a classic **high-strength spring temper**. This condition optimizes the steel for applications demanding an exceptional combination of yield strength, wear resistance, and moderate toughness, representing one of the highest-performance states achievable with plain carbon steel. **Heat Treatment Rationale:** * **Austenitizing at 800°C (1475°F):** A precise temperature chosen to fully austenitize the steel while minimizing the risk of grain coarsening and excessive retained austenite, which are heightened risks in steels with carbon content near 1.0%. * **Oil Quench:** Provides a severe but controlled cooling rate sufficient to achieve a fully martensitic structure in moderate sections, while significantly reducing the risk of distortion and quench cracking compared to water quenching. * **Temper at 480°C (900°F):** This high-temperature tempering effectively relieves the brittleness of the as-quenched martensite. It precipitates fine, stable carbides, transforming the microstructure into tough **tempered sorbite** with a **very high elastic limit**—ideal for springs and components that must resist permanent deformation under high stress. --- #### **2. Base Material Chemical Composition (AISI/SAE 1095)** | Element | Content (%) | | :--- | :--- | | **Carbon (C)** | **0.90 - 1.03** | | **Manganese (Mn)** | 0.30 - 0.50 | | **Phosphorus (P)** | ≤ 0.040 | | **Sulfur (S)** | ≤ 0.050 | | **Silicon (Si)** | 0.15 - 0.35 | | **Iron (Fe)** | Balance | --- #### **3. Final Mechanical & Physical Properties (In-Service State)** *Properties assume full through-hardening of a moderate section (e.g., up to 12-15mm / 0.5in).* | Property | Typical Value / Description | | :--- | :--- | | **Microstructure** | **Tempered Martensite (Tempered Sorbite)** | | **Hardness** | **44 - 50 HRC** (Rockwell C) / **~ 415 - 480 HB** | | **Tensile Strength** | **1450 - 1650 MPa (210 - 239 ksi)** | | **Yield Strength (0.2% Offset)** | **1300 - 1500 MPa (188 - 218 ksi)** | | **Elongation (in 50 mm)** | **~ 5 - 9%** | | **Reduction in Area** | **~ 25 - 35%** | | **Modulus of Elasticity** | ~ 200 GPa (29,000 ksi) | | **Fatigue Strength** | **Very High.** This temper provides excellent resistance to cyclic loading, especially when surface decarburization is controlled and stress concentrators are minimized. | | **Impact Toughness (Charpy V-notch)** | **Moderate (for AISI 1095).** This represents a good toughness-strength balance for this grade. Suitable for applications with some shock, but not severe impact. | | **Machinability** | **Very Poor.** Can only be finished by grinding or with very hard carbide tooling. All significant machining must be completed prior to heat treatment. | | **Weldability** | **Not Recommended.** The heat-treated condition is irreparably damaged by welding. | --- #### **4. Key In-Service Characteristics** * **Extremely High Elastic Limit & Yield Strength:** The foremost characteristic. This condition allows components to withstand exceptionally high static and cyclical stresses without permanent deformation, making it ideal for high-performance springs and high-stress structural parts. * **Excellent Wear & Abrasion Resistance:** The hardness of 44-50 HRC provides outstanding resistance to wear, galling, and surface indentation. * **Good Dimensional Stability:** The 480°C temper provides substantial stress relief, resulting in stable components under load. * **Section Size Limitation:** Due to the moderate hardenability from its low manganese content, AISI 1095 will show a softened core in sections thicker than approximately 12-15mm when oil-quenched. This condition is most effective for smaller cross-sections. --- #### **5. Typical Applications for this 480°C Temper** Components designed to leverage the exceptional strength and wear resistance of AISI 1095 in a tempered, serviceable state. * **High-Performance Flat Springs:** **Leaf springs for high-stress applications, snap springs, and spring washers** where maximum elastic limit in a thin section is required. * **Cutting Tools Requiring Toughness:** **Heavy-duty knives (e.g., survival knives), machetes, and industrial blades** that need a combination of edge retention and resistance to chipping. * **Hand Tools & Impact Components:** **Pry bars, heavy chisels, and punches** that require high strength and some resilience. * **Wear Parts & Machine Components:** **Bushings, guides, rollers, and non-gear drive components** subject to high contact stress and abrasion. * **Firearm Components:** **Springs, extractors, and certain small action parts** where high yield strength is critical. --- #### **6. Relevant Standards & Specifications** | Standard / Aspect | Relevance to this Condition | | :--- | :--- | | **Base Material Standard** | **AISI 1095 / SAE J403 / UNS G10950** | | **Heat Treatment Specification** | Engineering drawing callout example:
“Heat treat: Austenitize at 800°C (1475°F), oil quench. Temper at 480°C (900°F) to 44-50 HRC.” | | **ASTM A29/A29M** | For the base bar stock. | | **ASTM A689** | Specification for Carbon and Alloy Steel Bars for Springs. This temper falls within the property ranges for high-stress spring applications. | | **SAE J417** | Hardness Testing standard. | | **Internal/Process Specifications** | Often used, as precise control of decarb and temperature is critical for consistent results. | --- ### **Critical Processing & Design Considerations** 1. **Final State:** Components are **fully machined to final dimensions** (minus grinding allowance) prior to this heat treatment. Only finish grinding can be performed afterward. 2. **Decarburization Control is Paramount:** Austenitizing must be performed in a **controlled atmosphere** (e.g., neutral gas, vacuum) or with protective means. Surface decarburization would catastrophically reduce fatigue life and load-bearing capacity, especially in springs. 3. **Quench Medium:** **Oil quench is specified.** Water would cause near-certain cracking. The oil must be warm (40-60°C) and well-agitated. 4. **Immediate and Complete Tempering:** Tempering must follow quenching immediately to prevent cracking. **Double tempering** is highly recommended for this grade to ensure complete transformation and stress relief. 5. **Section Size Awareness:** This is **not a through-hardening treatment for thick sections**. For parts >12mm thick, expect a significant hardness gradient. Design calculations must account for this or specify a different steel (e.g., 5160) for larger sections. **Summary:** **AISI 1095 oil-quenched from 800°C and tempered at 480°C represents a high-precision, performance-optimized condition for this premier carbon steel.** It delivers an outstanding combination of **near-maximum strength, high hardness, and useful toughness**, making it a benchmark for demanding spring and wear applications in **moderate cross-sections**. Its successful implementation demands rigorous process control but rewards with exceptional mechanical performance. This treatment is chosen when the design requires the utmost from a simple steel chemistry, accepting the processing challenges in exchange for unparalleled strength and durability in thin, highly stressed components. -:- For detailed product information, please contact sales. -: AISI 1095 Steel, oil quenched from 800°C (1475°F), tempered at 480°C (900°F) Specification Dimensions Size： Diameter 20-1000 mm Length <4903 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 1095 Steel, oil quenched from 800°C (1475°F), tempered at 480°C (900°F) Properties -:- For detailed product information, please contact sales. -:

Applications of AISI 1095 Steel, oil quenched from 800°C (1475°F), tempered at 480°C (900°F) -:- For detailed product information, please contact sales. -: Chemical Identifiers AISI 1095 Steel, oil quenched from 800°C (1475°F), tempered at 480°C (900°F) -:- For detailed product information, please contact sales. -:

Packing of AISI 1095 Steel, oil quenched from 800°C (1475°F), tempered at 480°C (900°F) -:- 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 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 1374 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