AISI 1095 Steel Capillary

AISI 1095 Steel Capillary, oil quenched 800°C (1470°F), 480°C (900°F) temper, 25 mm (1 in.) round Product Information -:- For detailed product information, please contact sales. -: AISI 1095 Steel Capillary, oil quenched 800°C (1470°F), 480°C (900°F) temper, 25 mm (1 in.) round Synonyms -:- For detailed product information, please contact sales. -:

AISI 1095 Steel, oil quenched 800°C (1470°F), 480°C (900°F) temper, 25 mm (1 in.) round 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), 25 mm (1 in.) Round** #### **1. Overview: A High-Performance Spring/Structural Temper for Medium Sections** This datasheet describes **AISI 1095 steel in a fully heat-treated service condition for a 25 mm (1 inch) diameter round**. The material has been austenitized at 800°C (1470°F), oil quenched, and tempered at 480°C (900°F). This treatment protocol is meticulously calibrated for the moderate section size, balancing the extreme hardness potential of AISI 1095 with a critical degree of toughness and elastic resilience. The 800°C austenitizing temperature helps control grain growth, while the 480°C temper produces a classic **high-strength spring temper**, optimizing the steel for applications demanding an exceptional combination of yield strength, wear resistance, and moderate toughness. This is one of the highest-performance states achievable with plain carbon steel in this diameter. **Heat Treatment Rationale for 25 mm Section:** * **Austenitizing at 800°C:** A precise temperature chosen to fully austenitize the steel while minimizing the risk of grain coarsening and excessive retained austenite, which are heightened in steels with carbon content near 1.0%. * **Oil Quench:** For a 25 mm round, an oil quench provides the optimal cooling rate. It is severe enough to achieve a fully martensitic microstructure throughout most of the cross-section (with a possible slight softening at the absolute core), while being sufficiently controlled to minimize the high risks of distortion and quench cracking inherent with water quenching on this grade. * **Temper at 480°C (900°F):** This intermediate-high tempering temperature effectively relieves the brittleness of the as-quenched martensite. It precipitates fine, stable carbides to create a tough, sorbitic microstructure with a **very high elastic limit**, essential for springs and components resisting permanent deformation. --- #### **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 - 25 mm Round)** *Properties are for the heat-treated 25 mm diameter. Note: Due to the relatively low manganese content of 1095, a slight hardness gradient may exist, with the very core being marginally softer.* | Property | Typical Value / Description | | :--- | :--- | | **Microstructure** | **Tempered Martensite (Tempered Sorbite)** | | **Surface Hardness** | **45 - 51 HRC** (Rockwell C) / **~ 430 - 500 HB** | | **Core Hardness (Approx.)**| **40 - 47 HRC** (Minor gradient possible) | | **Tensile Strength** | **1400 - 1600 MPa (203 - 232 ksi)** | | **Yield Strength (0.2% Offset)** | **1250 - 1450 MPa (181 - 210 ksi)** | | **Elongation (in 50 mm)** | **~ 5 - 8%** | | **Reduction in Area** | **~ 20 - 30%** | | **Modulus of Elasticity** | ~ 200 GPa (29,000 ksi) | | **Fatigue Strength** | **Very High.** This temper provides excellent resistance to cyclic loading, especially if surface decarburization is controlled. | | **Impact Toughness** | **Moderate (for AISI 1095).** Represents a practical toughness-strength balance. 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. | --- #### **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 taking a permanent set. * **Excellent Wear & Abrasion Resistance:** The high surface hardness provides outstanding resistance to wear, galling, and surface indentation. * **Good Dimensional Stability:** The 480°C temper provides substantial stress relief, resulting in stable components. * **Section-Size Limited Performance:** This treatment is near the limit for effective through-hardening of 1095 with an oil quench. The 25mm diameter ensures good, but not necessarily perfect, core properties. --- #### **5. Typical Applications for this 480°C Temper (25 mm Round)** Components designed to leverage the exceptional strength and wear resistance of AISI 1095 in a ~1-inch cross-section. * **High-Stress Flat Springs & Snap Rings:** **Heavy-duty leaf springs, high-load snap rings, and spring washers** where maximum elastic limit in a moderate section is required. * **High-Strength Axles, Pins & Mandrels:** **Pivot pins, linkage pins, and tool mandrels** in machinery that must resist shear and bending under high loads with good wear resistance. * **Cutting & Shearing Tools Requiring Toughness:** **Heavy-duty knives, machetes, and industrial shear blades** that need a combination of extreme edge retention and some resistance to chipping. * **Tooling & Machine Components:** **Jig and fixture details, press brake tooling, and heavy-duty rollers** requiring high hardness and resistance to deformation. * **Wear Parts:** **Bushings, guides, and non-gear drive components** subject to high contact stress and abrasion. --- #### **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 (1470°F), oil quench. Temper at 480°C (900°F) to 45-51 HRC.” | | **ASTM A29/A29M** | For the base bar stock. | | **ASTM A689** | Specification for Carbon and Alloy Steel Bars for Springs. This temper aligns with high-stress spring applications. | | **Internal/Process Specifications** | Often critical, due to the need for precise control of austenitizing and decarburization. | --- ### **Critical Processing & Design Considerations** 1. **Final State:** Components are **fully machined to final dimensions** (minus grinding allowance) prior to this heat treatment. 2. **Decarburization Control is Paramount:** Austenitizing must be performed in a **controlled atmosphere**. Surface decarburization would drastically reduce fatigue life and load-bearing capacity. 3. **Quench Medium:** **Oil quench is specified for this diameter.** Water would cause near-certain cracking. 4. **Immediate and Double Tempering:** Tempering must follow quenching immediately. **Double tempering is highly recommended** for this grade to ensure complete transformation and stress relief, maximizing toughness. 5. **Core Property Awareness:** Designers should be aware that the core hardness and strength may be slightly lower than the surface. For highly stressed torsion or bending applications, this gradient should be considered. **Summary:** **AISI 1095 oil-quenched from 800°C and tempered at 480°C in a 25 mm round represents a high-precision, performance-optimized condition.** It delivers an outstanding combination of **near-maximum strength, high hardness, and useful toughness**, making it a benchmark for demanding spring, tool, 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 for unparalleled strength and durability. -:- For detailed product information, please contact sales. -: AISI 1095 Steel, oil quenched 800°C (1470°F), 480°C (900°F) temper, 25 mm (1 in.) round Specification Dimensions Size： Diameter 20-1000 mm Length <4912 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 800°C (1470°F), 480°C (900°F) temper, 25 mm (1 in.) round Properties -:- For detailed product information, please contact sales. -:

Applications of AISI 1095 Steel Capillary, oil quenched 800°C (1470°F), 480°C (900°F) temper, 25 mm (1 in.) round -:- For detailed product information, please contact sales. -: Chemical Identifiers AISI 1095 Steel Capillary, oil quenched 800°C (1470°F), 480°C (900°F) temper, 25 mm (1 in.) round -:- For detailed product information, please contact sales. -:

Packing of AISI 1095 Steel Capillary, oil quenched 800°C (1470°F), 480°C (900°F) temper, 25 mm (1 in.) round -:- 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 Capillary 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 1383 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