ASTM A148 Grade 80-50 Cast Steel Wire

ASTM A148 Grade 80-50 Cast Steel Wire Product Information -:- For detailed product information, please contact sales. -: ASTM A148 Grade 80-50 Cast Steel Wire Synonyms -:- For detailed product information, please contact sales. -:

ASTM A148 Grade 80-50 Cast Steel Product Information -:- For detailed product information, please contact sales. -: # **Product Technical Datasheet: ASTM A148 Grade 80-50 Cast Steel** ## **1. Product Overview** **ASTM A148 Grade 80-50** is a **medium-strength carbon steel casting** and one of the most commonly specified grades within the ASTM A148 standard series. As the lowest strength grade in this specification, it offers an excellent balance of strength, ductility, weldability, and machinability, making it a versatile and cost-effective choice for a wide range of structural and general engineering applications. The grade designation "80-50" indicates minimum tensile strength (**80 ksi / 550 MPa**) and minimum yield strength (**50 ksi / 345 MPa**) requirements. Castings are typically supplied in the normalized, normalized and tempered, or annealed condition. ## **2. Governing International Standard** This grade is fully defined under **ASTM A148 / A148M – Standard Specification for Steel Castings, High Strength, for Structural Purposes**. It serves as the baseline grade within this multi-grade standard, which primarily classifies cast steels by their mechanical properties. ## **3. Typical Chemical Composition** ASTM A148 emphasizes mechanical properties over strict chemical composition for this grade, allowing foundries flexibility. A typical, economical composition is as follows (in weight %, maximum unless range is given): * **Carbon (C):** 0.25 - 0.35% * **Manganese (Mn):** 0.60 - 1.00% * **Silicon (Si):** 0.30 - 0.60% * **Phosphorus (P):** 0.035% max * **Sulfur (S):** 0.035% max * **Residual Alloys:** Generally a plain carbon steel; may contain residual amounts of Cr, Ni, Mo (<0.50% total) but is not intentionally highly alloyed. **Note:** Chemistry can be adjusted by the foundry to achieve the required mechanical properties in the relevant casting section size. ## **4. Physical & Mechanical Properties** * **Minimum Mechanical Properties (as per ASTM A148):** * **Tensile Strength:** 80 ksi (550 MPa) * **Yield Strength (0.2% Offset):** 50 ksi (345 MPa) * **Elongation in 2" (50 mm):** 22% * **Reduction of Area:** 35% * **Typical Achieved Properties (After Normalizing or Annealing):** * **Hardness:** 156 - 207 HBW (Brinell Hardness) * **Modulus of Elasticity:** 29 x 10⁶ psi (200 GPa) * **Poisson's Ratio:** 0.29 * **Density:** 7.85 g/cm³ * **Charpy V-Notch Impact Energy:** Typically >20 J at room temperature. * **Common Heat Treatments:** **Normalizing** is the most common treatment to refine the grain structure and achieve consistent properties. **Annealing** may be used for maximum machinability and stress relief. **Normalizing and Tempering** can provide an optimized balance of strength and toughness. ## **5. Key Characteristics & Engineering Advantages** * **Excellent Ductility and Toughness:** Its high elongation and reduction of area values make it resistant to brittle fracture and suitable for components with moderate impact loads. * **Good Weldability:** This is one of its most significant advantages. It can be readily welded using common arc welding processes (SMAW, GMAW, FCAW) with standard low-carbon steel filler metals. Preheating (150-300°F / 65-150°C) is recommended for thick sections, but post-weld heat treatment is not always mandatory. * **Excellent Machinability:** Its moderate hardness and carbon content make it one of the easiest grades within the A148 series to machine, allowing for good surface finishes and higher production rates. * **Cost-Effectiveness:** As a plain carbon steel with simple heat treatment requirements, it is generally the most economical grade in the A148 series. * **Balance of Properties:** Provides a reliable combination of strength, ductility, and manufacturability for non-critical or moderately stressed components. ## **6. Typical Applications** Grade 80-50 is widely used across industries for structural components that do not require the ultra-high strength of the premium grades: * **General Machinery & Equipment:** Gearbox housings, pump casings, machine tool bases, support brackets, and frames. * **Material Handling:** Pulleys, sheaves, hoist components, conveyor system frames, and medium-duty hooks. * **Construction & Infrastructure:** Bridge bearing components, construction machinery housings, and structural supports. * **Railroad:** Coupler yokes, draft lugs, and other non-wearing structural parts. * **Valves & Piping:** Medium-pressure valve bodies and flanges (for non-corrosive services). * **Marine & Offshore:** Deck machinery components, non-critical structural fittings. ## **7. Summary** **ASTM A148 Grade 80-50** is the fundamental, workhorse grade of the high-strength structural cast steel family. It is selected not for ultimate strength, but for its superior combination of **fabricability, toughness, and cost-effectiveness**. Its excellent weldability and machinability make it ideal for complex fabrications and components requiring significant post-casting machining. When design requirements call for reliable performance at moderate stress levels with an emphasis on manufacturability and total cost, Grade 80-50 is often the optimal and most practical choice. -:- For detailed product information, please contact sales. -: ASTM A148 Grade 80-50 Cast Steel Specification Dimensions Size： Diameter 20-1000 mm Length <5855 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 A148 Grade 80-50 Cast Steel Properties -:- For detailed product information, please contact sales. -:

Applications of ASTM A148 Grade 80-50 Cast Steel Wire -:- For detailed product information, please contact sales. -: Chemical Identifiers ASTM A148 Grade 80-50 Cast Steel Wire -:- For detailed product information, please contact sales. -:

Packing of ASTM A148 Grade 80-50 Cast Steel Wire -:- 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 Wire 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 2326 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