AISI 5130 Steel Flange

1,We Manufacturing processes are primarily classified into four types: 1:Forging, 2:Casting, 3:Cutting, 4:Rolling. 2,We can manufacture in accordance with these standards. Standards: GB Series (Chinese Standards), JB Series (Machinery Standards), HG Series (Chemical Industry Standards), ASME B16.5 (American Standards), BS4504 (British Standards), DIN (German Standards), and JIS (Japanese Standards). Internationally, there are two primary systems of pipe flange standards: the European system, represented by the German DIN standards (including those of the former Soviet Union), and the American system, represented by the US ANSI pipe flange standards. Other common standards include: the Chinese Ministry of Machinery Industry standards (JB series), the Ministry of Chemical Industry standards (HG series), the Chinese National Standard *GB/T 9112–9124-2010 Steel Pipe Flanges*, as well as US standards (ASME B16.5), British standards (BS4504), German standards (DIN), Japanese standards (JIS), and marine standards (CBM), among others. The nominal pressure ratings for the PN series are designated by "PN" and comprise the following nine levels: PN2.5, PN6, PN10, PN16, PN25, PN40, PN63, PN100, and PN160. The nominal pressure ratings for the Class series are designated by "Class" and comprise the following six levels: Class150, Class300, Class600, Class900, Class1500, and Class2500. Flange Classification 1. **According to Chemical Industry Standards:** Flanges are classified as follows: Plate Flat Welding Flange (PL), Necked Flat Welding Flange (SO), Necked Butt Welding Flange (WN), Integral Flange (IF), Socket Welding Flange (SW), Threaded Flange (Th), Butt Welding Ring Loose Flange (PJ/SE), Blind Flange (BL), Flat Welding Ring Loose Flange (PJ/PJ), and Lined Blind Flange (BL(s)). 2. **According to Petrochemical (SH) Industry Standards:** Flanges are classified as follows: Threaded Flange (PL), Butt Welding Flange (WN), Flat Welding Flange (SO), Socket Welding Flange (SW), Loose Flange (LJ), and Blind Flange (no specific designation). 3. **According to Machinery (JB) Industry Standards:** Flanges are classified as follows: Integral Flange, Butt Welding Flange, Plate Flat Welding Flange, Butt Welding Ring Plate Loose Flange, Flat Welding Ring Plate Loose Flange, Lap Joint Ring Plate Loose Flange, and Blind Flange. 4. **According to Connection Method/Type:** Flanges are classified as follows: Plate Flat Welding Flange, Necked Flat Welding Flange, Necked Butt Welding Flange, Socket Welding Flange, Threaded Flange, Blind Flange, Necked Butt Welding Ring Loose Flange, Flat Welding Ring Loose Flange, Ring-Type Joint (RTJ) Flange and Blind Flange, Large-Diameter Plate Flange, Large-Diameter High-Neck Flange, Figure-8 Blind Plate, Butt Welding Ring Loose Flange, etc. 5. **According to the Component Being Connected:** Flanges can be classified into Vessel Flanges and Pipe Flanges. 6. **According to Structural Type:** Flanges include Integral Flanges, Threaded Flanges, Flat Welding Flanges, Butt Welding Flanges, Lap Joint (Loose/Swivel) Flanges, and Blind Flanges. A flange—also referred to as a flange plate or rim—is a component used to connect shafts to one another, or, more commonly, to join the ends of pipes. Flanges are also utilized at the inlet and outlet ports of equipment to facilitate connections between two devices—for instance, the flange on a speed reducer. A "flange connection" or "flanged joint" refers to a detachable joint assembly comprising three interconnected elements—a flange, a gasket, and bolts—that together form a sealed structural unit. In the context of piping systems, a "pipe flange" specifically denotes a flange used for plumbing within the installation; when applied to equipment, it refers to the inlet or outlet flange of that specific device. Flanges feature a series of holes through which bolts are inserted to securely fasten the two flanges together, while a gasket placed between the flanges ensures a leak-proof seal. Flanges are broadly categorized into three types: threaded (screw-in) flanges, welded flanges, and clamp-type flanges. Flanges are invariably used in pairs; threaded flanges are suitable for low-pressure piping applications, whereas welded flanges are required for systems operating at pressures exceeding 4 kilograms per square centimeter. A sealing gasket is inserted between the two flange plates, which are then firmly secured using bolts. The thickness of a flange—as well as the specifications of the bolts used to fasten it—vary depending on the specific pressure rating required for the application. When connecting equipment such as water pumps or valves to piping systems, the corresponding connection points on these devices are often manufactured in the shape of a matching flange; this method of attachment is also referred to as a "flange connection." Generally, any connecting component that utilizes bolts to join and seal the perimeters of two flat surfaces—such as the joints in ventilation ducts—is termed a "flange"; such components may collectively be classified as "flange-type parts." However, since such a connection often constitutes merely a *portion* of a larger device—for instance, the interface between a flange and a water pump—it would be inappropriate to classify the entire water pump itself as a "flange-type part." Conversely, smaller components—such as valves—that feature such flanged interfaces may indeed be appropriately categorized as "flange-type parts." -:- For detailed product information, please contact sales. -: AISI 5130 Steel Flange Product Information -:- For detailed product information, please contact sales. -: AISI 5130 Steel Flange Synonyms -:- For detailed product information, please contact sales. -:

AISI 5130 Steel Product Information -:- For detailed product information, please contact sales. -: # **AISI 5130 Chromium Alloy Steel - Technical Data Sheet** ## **1. Product Overview** **AISI 5130** is a medium-carbon, chromium alloy steel designed for applications requiring **good hardenability, strength, and toughness** after heat treatment. As a member of the 51xx series of chromium steels, it contains approximately 0.95-1.20% chromium, providing enhanced hardenability compared to plain carbon steels, allowing it to be effectively through-hardened in oil to moderate section sizes. This steel is particularly valued for its combination of **good fatigue resistance, wear resistance, and impact toughness** when properly heat treated. It is commonly used for components subjected to medium to high stresses, such as gears, shafts, and fasteners, where a balance of strength and ductility is required. --- ## **2. Chemical Composition (SAE J404/J412)** | Element | Composition Range (%) | Metallurgical Function | |---------|----------------------|------------------------| | **Carbon (C)** | 0.28 - 0.33 | Primary strengthening element; provides good hardenability and strength | | **Manganese (Mn)** | 0.70 - 0.90 | Enhances hardenability and strength; improves response to heat treatment | | **Phosphorus (P)** | ≤ 0.035 | Residual impurity; minimized for improved toughness | | **Sulfur (S)** | ≤ 0.040 | Residual element; typically kept low for better transverse properties | | **Silicon (Si)** | 0.15 - 0.35 | Deoxidizer; strengthens ferrite matrix | | **Chromium (Cr)** | 0.95 - 1.20 | **Primary alloying element**; significantly improves hardenability, wear resistance, and tempering resistance | | **Iron (Fe)** | Balance | Base metal | **Material Designations:** - **SAE/AISI:** 5130 - **UNS:** G51300 - **Common Forms:** Bar, wire, forging stock - **Available Conditions:** Annealed, normalized, hot rolled, cold drawn --- ## **3. Physical & Mechanical Properties** ### **As-Supplied Conditions:** **Annealed Condition (Typical):** - **Hardness:** 183-229 HB (89-97 HRB) - **Tensile Strength:** 620-795 MPa (90-115 ksi) - **Yield Strength:** 415-550 MPa (60-80 ksi) - **Elongation (in 2"):** 20-25% - **Reduction of Area:** 45-55% - **Machinability:** 55-60% (relative to 1212 steel = 100%) **Normalized Condition:** - **Hardness:** 197-241 HB - **Tensile Strength:** 655-860 MPa (95-125 ksi) - **Yield Strength:** 345-585 MPa (50-85 ksi) ### **Heat Treated Properties (Through-Hardened):** **Standard Heat Treatment:** - **Austenitizing:** 845-870°C (1550-1600°F) - **Quenching:** Oil (preferred for sections up to 50mm) - **Tempering:** 400-650°C (750-1200°F) based on desired hardness **Typical Properties After Heat Treatment:** | Tempering Temperature | Hardness (HRC) | Tensile Strength | Yield Strength | Impact Toughness | |----------------------|----------------|------------------|----------------|-------------------| | As-quenched | 50-55 | - | - | 15-25 J | | 200°C (400°F) | 48-52 | 1650-1800 MPa | 1400-1550 MPa | 20-30 J | | 400°C (750°F) | 38-42 | 1200-1350 MPa | 1050-1200 MPa | 35-50 J | | 550°C (1020°F) | 28-32 | 900-1050 MPa | 750-900 MPa | 60-80 J | ### **Physical Properties:** - **Density:** 7.85 g/cm³ (0.284 lb/in³) - **Melting Point:** 1480-1520°C (2695-2770°F) - **Modulus of Elasticity:** 205 GPa (29,700 ksi) - **Poisson's Ratio:** 0.29 - **Thermal Conductivity:** 45.0 W/m·K at 100°C - **Coefficient of Thermal Expansion:** 11.7 μm/m·°C (20-100°C) - **Specific Heat:** 460 J/kg·K at 20°C ### **Hardenability Data:** - **Ideal Critical Diameter (DI) in oil:** ~50-60 mm - **Jominy Distance to 50 HRC:** ~J8-J12 - **Maximum Section for Through-Hardening:** ~50 mm in oil quench --- ## **4. Product Applications** ### **Power Transmission Components:** - **Medium-duty gears** and pinions - **Transmission shafts** and axle shafts - **Spline shafts** and drive shafts - **Gear blanks** for subsequent machining ### **Automotive & Transportation:** - **Axle shafts** for light trucks and passenger vehicles - **Steering components:** Pitman arms, steering arms - **Suspension parts:** Torsion bars, stabilizer links - **Fasteners:** High-strength bolts and studs ### **Industrial Machinery:** - **Machine tool components:** Spindles, arbors, tool holders - **Hydraulic components:** Piston rods, cylinder barrels - **Agricultural equipment:** Implement shafts, drive components - **Mining equipment:** Drill rods, cutter shafts ### **Specialized Applications:** - **Forged components:** Crankshafts, connecting rods (medium duty) - **Hand tools:** Wrenches, pry bars, impact tools - **Railway components:** Axles, couplings (for light rail) - **Construction equipment:** Linkage pins, pivot shafts ### **Typical Heat Treatment by Application:** | Application | Hardness Range | Heat Treatment | |-------------|----------------|----------------| | Gears | 28-35 HRC | Quench & temper at 500-600°C | | Shafts | 30-40 HRC | Quench & temper at 450-550°C | | Fasteners | 35-45 HRC | Quench & temper at 350-450°C | | Tools | 40-48 HRC | Quench & temper at 200-300°C | --- ## **5. International Standards & Equivalent Grades** ### **Primary Standards:** | Standard | Designation | Specification Document | |----------|-------------|------------------------| | **SAE/AISI** | **5130** | SAE J404, J412 | | **UNS** | **G51300** | Unified Numbering System | | **ASTM** | - | A322 (Standard for Alloy Steel Bars) | ### **Global Equivalent Grades:** | Country/Region | Standard | Equivalent Grade | Notes | |----------------|----------|-----------------|-------| | **International (ISO)** | ISO 683-11 | **28Cr4** | Type 1.7030 | | **Europe (EN)** | EN 10083-3 | **28Cr4** | Designation 1.7030 | | **Germany** | DIN 17200 | **28Cr4** | Direct equivalent | | **Japan** | JIS G4105 | **SCr430** | Very similar composition | | **China** | GB/T 3077 | **30Cr** | Chinese equivalent (30Cr) | | **France** | NF A35-552 | **30C4** | French standard | | **United Kingdom** | BS 970 | **530A30** | British specification | ### **H-Grade Variant:** - **AISI 5130H:** Same chemistry with guaranteed hardenability bands per SAE J1268 ### **Related Processing Standards:** - **Heat Treatment:** AMS 2759, ASTM A29 - **Forging:** ASTM A788 - **Bars:** ASTM A322, A304 - **Cleanliness:** AMS 2301 (for aircraft quality) --- ## **6. Manufacturing & Processing Characteristics** ### **Hot Working:** - **Forging Temperature:** 1150-850°C (2100-1560°F) - **Hot Rolling:** 1100-900°C (2010-1650°F) - **Finish Forging Temperature:** ≥850°C (1560°F) - **Post-hot work:** Slow cool or anneal to prevent cracking ### **Heat Treatment Guidelines:** **1. Annealing:** - **Full Anneal:** 830-860°C (1525-1580°F), furnace cool - **Process Anneal:** 650-700°C (1200-1290°F), air cool - **Spheroidize Anneal:** 740-760°C (1365-1400°F), slow cool for optimal machinability **2. Normalizing:** - **Temperature:** 870-900°C (1600-1650°F) - **Cooling:** Still air - **Purpose:** Refine grain structure before hardening **3. Hardening:** - **Austenitizing:** 845-870°C (1555-1600°F) - **Soak Time:** 20-30 minutes per inch of thickness - **Quenching Medium:** Oil (rapid oil for sections >25mm) - **Pre-heat:** 650-700°C recommended for complex shapes **4. Tempering:** - **Temperature:** Based on required hardness (see Section 3) - **Time:** Minimum 1 hour per inch of thickness - **Cooling:** Air cool; rapid cool through 400-600°C range to minimize temper embrittlement risk ### **Machinability:** - **Best Condition:** Annealed or normalized - **Cutting Speed:** 50-65% of 1212 steel - **Feed Rate:** Moderate - **Tool Material:** Carbide recommended for production - **Coolant:** Required for optimum tool life ### **Weldability:** - **Rating:** Fair to poor - **Pre-heat:** 200-300°C (400-570°F) recommended - **Post-weld:** Stress relief at 600-650°C (1110-1200°F) - **Processes:** SMAW, GTAW with low-hydrogen electrodes - **Limitations:** Full properties restored only by re-heat treatment --- ## **7. Quality Control & Inspection** ### **Standard Testing:** - **Chemical Analysis:** ASTM A751 - **Hardness Testing:** ASTM E10 (Brinell), E18 (Rockwell) - **Tensile Testing:** ASTM A370 - **Impact Testing:** ASTM E23 (Charpy) if specified - **Microstructure:** ASTM E112 (grain size), E45 (inclusions) ### **Typical Requirements:** - **Grain Size:** ASTM 5-8 (fine grain preferred) - **Decarburization:** ≤0.25 mm total per side (as-supplied) - **Surface Quality:** Free from seams, laps, and excessive defects - **Straightness:** Commercial standard or as specified ### **Special Quality Grades:** - **Aircraft Quality:** Per AMS 2301 (cleanliness requirements) - **Bearing Quality:** For applications requiring high fatigue resistance - **Special Treatment (ST):** For improved machinability --- ## **8. Technical Performance Data** ### **Fatigue Properties:** - **Rotating Bending Fatigue Limit:** 400-500 MPa (58-73 ksi) at 35 HRC - **Fatigue Ratio:** 0.45-0.50 (endurance limit/tensile strength) - **Notch Sensitivity:** Moderate (q ≈ 0.7-0.8) - **Surface Finish Effect:** Significant; improve for fatigue applications ### **Wear Characteristics:** - **Abrasive Wear Resistance:** Good at hardness >35 HRC - **Adhesive Wear:** Fair to good with proper lubrication - **Contact Fatigue:** Good for medium-duty applications - **Break-in Characteristics:** Good with proper surface finish ### **Toughness Considerations:** - **Transition Temperature:** Typically below -20°C (-4°F) when properly heat treated - **Temper Embrittlement:** Susceptible between 350-575°C (660-1070°F) tempering range - **Fracture Toughness:** K₁C ≈ 50-70 MPa√m at 35 HRC ### **Corrosion Resistance:** - **General:** Poor (similar to carbon steels) - **Atmospheric:** Requires protective coatings - **Recommended Coatings:** Phosphate, black oxide, plating, painting --- ## **9. Design & Application Considerations** ### **Optimal Application Parameters:** - **Section Size:** ≤50 mm diameter for through-hardening in oil - **Stress Concentrations:** Generous fillets (R ≥ 0.3 × thickness change) - **Surface Finish:** 0.8-3.2 μm Ra for optimal fatigue performance - **Operating Temperature:** Up to 300°C (570°F) continuous; up to 450°C (840°F) intermittent ### **Advantages of AISI 5130:** ✅ **Good hardenability** for medium sections ✅ **Excellent strength-toughness balance** ✅ **Good fatigue and wear resistance** ✅ **Cost-effective** compared to higher alloy steels ✅ **Reliable heat treatment response** ✅ **Available in various forms and sizes** ### **Limitations:** ⚠️ **Limited corrosion resistance** without protection ⚠️ **Welding requires special procedures** ⚠️ **Not suitable for very large sections** (>75 mm) ⚠️ **Temper embrittlement susceptibility** in certain ranges ⚠️ **Machining more difficult** than free-machining steels ### **Comparison with Similar Grades:** | Property | 5130 | 5140 | 4130 | 8640 | |----------|------|------|------|------| | **Carbon Content** | 0.30% | 0.40% | 0.30% | 0.40% | | **Chromium Content** | 1.00% | 1.00% | 0.95% | 0.50% | | **Primary Alloying** | Cr | Cr | Cr-Mo | Ni-Cr-Mo | | **Hardenability** | Good | Very Good | Good | Excellent | | **Toughness** | Good | Good | Very Good | Excellent | | **Typical Use** | Shafts, gears | Heavier sections | Aircraft, auto | Critical parts | | **Relative Cost** | 1.0 | 1.05 | 1.1 | 1.3 | --- ## **10. Special Processing Options** ### **Surface Hardening:** - **Induction Hardening:** Produces hard surface (55-60 HRC) with tough core - **Flame Hardening:** For large or irregular shapes - **Nitriding:** For improved wear and fatigue resistance (requires special grade) ### **Thermomechanical Processing:** - **Controlled Rolling:** For improved toughness - **Ausforming:** For ultra-high strength applications - **Intercritical Heat Treatment:** For optimized properties ### **Finishing Operations:** - **Grinding:** After heat treatment for precision dimensions - **Shot Peening:** For improved fatigue life - **Superfinishing:** For optimal surface characteristics --- ## **11. Environmental & Safety Considerations** ### **Material Safety:** - **General Handling:** Standard steel safety procedures - **Machining Dust:** Requires proper ventilation - **Heat Treatment:** Standard furnace and quench oil safety ### **Environmental Compliance:** - **Recyclability:** 100% as ferrous scrap - **RoHS/REACH Compliant:** Contains no restricted substances - **Processing:** Standard environmental controls for steel production ### **Sustainability Factors:** - Long service life reduces replacement frequency - Energy efficient heat treatment compared to some alternatives - Compatible with modern manufacturing processes --- **Technical Note:** AISI 5130 represents an optimal balance for many medium-duty applications where the higher carbon of 5140 provides excessive hardness with reduced toughness, and the lower carbon of 5120 provides insufficient strength. Its 1% chromium content provides good hardenability without the cost premium of nickel or molybdenum additions. **Revision:** 1.1 **Date:** October 2023 **Disclaimer:** This technical data is for informational purposes. Actual properties depend on specific processing, heat treatment, and application conditions. Always consult with material suppliers and conduct application-specific testing for critical components. Properties may vary between manufacturers and heat lots. -:- For detailed product information, please contact sales. -: AISI 5130 Steel Specification Dimensions Size： Diameter 20-1000 mm Length <4112 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 5130 Steel Properties -:- For detailed product information, please contact sales. -:

Applications of AISI 5130 Steel Flange -:- For detailed product information, please contact sales. -: Chemical Identifiers AISI 5130 Steel Flange -:- For detailed product information, please contact sales. -:

Packing of AISI 5130 Steel Flange -:- 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 Flange 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 583 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