ASTM A485 Steel Capillary, Grade 3

ASTM A485 Steel Capillary, Grade 3 Product Information -:- For detailed product information, please contact sales. -: ASTM A485 Steel Capillary, Grade 3 Synonyms -:- For detailed product information, please contact sales. -:

ASTM A485 Steel, Grade 3 Product Information -:- For detailed product information, please contact sales. -: ### **Product Introduction: ASTM A485 Grade 3 High-Hardenability Steel** #### **1. Overview** ASTM A485 Grade 3 is a premium high-hardenability bearing steel with optimized chemistry for applications requiring superior through-hardening characteristics in large cross-sections. This grade represents an intermediate level between Grades 2 and 4, offering an excellent balance of hardenability, mechanical properties, and economic feasibility for demanding industrial applications. #### **2. Key International Standards** - **Primary Standard:** **ASTM A485** - Standard Specification for High Hardenability Anti-Friction Bearing Steel - **Processing Condition:** Supplied in spheroidize annealed condition - **International Equivalents:** - **ISO 683-17:** 100CrMnSi6-4 - **DIN:** 100CrMnSi6-4 - **JIS G4805:** SUJ5 (similar characteristics) #### **3. Chemical Composition (Weight %)** | Element | Composition (%) | |---------|-----------------| | Carbon (C) | 0.95-1.10 | | Manganese (Mn) | 1.05-1.35 | | Silicon (Si) | 0.50-0.80 | | Chromium (Cr) | 1.15-1.50 | | Molybdenum (Mo) | 0.40-0.60 | | Phosphorus (P), max | 0.025 | | Sulfur (S), max | 0.025 | *Note: The carefully balanced alloy content provides enhanced hardenability while maintaining good processing characteristics.* #### **4. Mechanical & Physical Properties** **Heat Treated Properties (Oil Quenched & Tempered):** - **Hardness:** 59-66 HRC (typical) - **Tensile Strength:** 2100-2500 MPa (305-363 ksi) - **Yield Strength:** 1700-2100 MPa (247-305 ksi) - **Fatigue Strength:** Excellent rolling contact fatigue resistance **Physical Properties:** - **Density:** 7.84 g/cm³ - **Modulus of Elasticity:** 206 GPa - **Thermal Conductivity:** 40 W/m·K (at 100°C) - **Coefficient of Thermal Expansion:** 12.3 × 10⁻⁶/K (20-100°C) - **Poisson's Ratio:** 0.29 #### **5. Product Applications** - **Large-Diameter Bearings:** Bearings with sections 75-150 mm - **Heavy Machinery:** Construction equipment bearings, crane sheave bearings - **Industrial Gearboxes:** Large transmission gears and shafts - **Mining Equipment:** Crusher bearings, conveyor system components - **Wind Turbine Components:** Pitch and yaw bearing components #### **6. Key Characteristics & Advantages** - **Optimized Hardenability:** Excellent through-hardening for medium to large sections - **Enhanced Toughness:** Good impact resistance for through-hardened steel - **Superior Fatigue Performance:** Excellent resistance to spalling and pitting - **Good Stability:** Minimal distortion during heat treatment - **Economic Efficiency:** Cost-effective for its performance level #### **7. Heat Treatment Requirements** - **Annealing:** Spheroidize annealed at 780-800°C - **Hardening:** Austenitize at 840-860°C, oil quench - **Tempering:** 160-200°C for optimal hardness-toughness balance - **Hardenability Band:** J12=12 min (Jominy test) #### **8. Fabrication Considerations** - **Machinability:** Good in annealed condition (192-235 HB) - **Grinding Characteristics:** Excellent with proper wheel selection - **Forming:** Limited cold formability in hardened state - **Quality Control:** Requires strict process control for consistent results ASTM A485 Grade 3 provides manufacturers with a reliable high-performance steel solution that delivers consistent results in demanding applications where superior hardenability, wear resistance, and fatigue performance are critical requirements for medium to large cross-sectional components. -:- For detailed product information, please contact sales. -: ASTM A485 Steel, Grade 3 Specification Dimensions Size： Diameter 20-1000 mm Length <4397 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. -: ASTM A485 Steel, Grade 3 Properties -:- For detailed product information, please contact sales. -:

Applications of ASTM A485 Steel Capillary, Grade 3 -:- For detailed product information, please contact sales. -: Chemical Identifiers ASTM A485 Steel Capillary, Grade 3 -:- For detailed product information, please contact sales. -:

Packing of ASTM A485 Steel Capillary, Grade 3 -:- 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 868 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