Spherical ASTM A131 Steel Powder, Grade CS

ASTM A131 Steel Spherical Powder, Grade CS Product Information -:- For detailed product information, please contact sales. -: ASTM A131 Steel Spherical Powder, Grade CS Synonyms -:- For detailed product information, please contact sales. -: -:- For detailed product information, please contact sales. -: Spherical ASTM A131 Steel Powder, Grade CS characteristics -:- For detailed product information, please contact sales. -: Spherical ASTM A131 Steel Powder, Grade CS Particle Size -:- For detailed product information, please contact sales. -: -:- -:- 0-15μm ,5-25μm, 15-45μm, 15-53μm,20-63um, 45-75μm, 45-105μm, 45-150μm ,75-150μm. (Various granularities can be customized according to customer requirements) -:- For detailed product information, please contact sales. -:

Spherical ASTM A131 Steel Powder, Grade CS Applicable processes -:- For detailed product information, please contact sales. -: Laser/electron beam additive manufacturing (SLM/EBM, 3D printing) Direct laser deposition (DLD) Used in thermal spray (TSA) Powder hot isostatic pressing (HIP) Metal injection molding (MIM) Powder metallurgy (PM) Laser cladding (LC), etc. -:- For detailed product information, please contact sales. -: Spherical ASTM A131 Steel Powder, Grade CS Chemical Composition -:- For detailed product information, please contact sales. -: -:- For detailed product information, please contact sales. -: ASTM A131 Steel, Grade CS Product Information -:- For detailed product information, please contact sales. -: ### **ASTM A131 Grade CS Carbon Structural Steel for Marine Service** **Product Overview** ASTM A131 Grade CS is a general-purpose **carbon structural steel** grade specified for marine applications under the ASTM A131 standard (*Standard Specification for Structural Steel for Ships*). Unlike the high-strength, low-alloy (HSLA) "AH" series, Grade CS represents a classic mild steel formulation. It is characterized by **good weldability, formability, and ductility**, combined with adequate strength for many non-critical marine structures. It serves as a fundamental, cost-effective material for a wide range of shipbuilding components where extreme low-temperature toughness or very high strength is not the primary requirement. **Key International Standards** * **Primary Standard:** **ASTM A131/A131M** - Standard Specification for Structural Steel for Ships * **Common Equivalent Grades (Note: Direct equivalence requires careful review of specifications):** * **ASTM A36:** The most common general structural carbon steel; similar chemistry and mechanical properties, but **A131 CS is produced with mandatory toughness testing for marine certification**. * **EN 10025-2:** S235JR / S235J0 (Similar strength level, but impact test requirements may differ). * **Classification Society Equivalents:** Can be supplied as **ABS Grade CS**, **DNV NV CS**, **LR Grade CS**, etc., upon approval and meeting additional society-specific rules. **Chemical Composition (Typical % by Weight, per ASTM A131)** The composition is optimized for manufacturability and balanced properties. | Element | Content (Maximum, %) | Role & Effect | | :--- | :--- | :--- | | **Carbon (C)** | 0.23 - 0.31 (varies by product form/thickness) | Primary strengthening element. Higher than AH grades, but controlled for weldability. | | **Manganese (Mn)** | 0.80 - 1.20 (approx.) | Increases strength and hardenability, counteracts brittleness from sulfur. | | **Phosphorus (P)** | 0.035 max | Impurity; kept low to prevent "cold shortness" (brittleness). | | **Sulfur (S)** | 0.035 max | Impurity; kept low to prevent "hot shortness" during welding/forming. | | **Silicon (Si)** | 0.10 - 0.35 | Deoxidizer during steelmaking, contributes moderately to strength. | | **Copper (Cu)** | 0.35 min (when specified) | Often required for enhanced atmospheric corrosion resistance. | (Note: Exact limits depend on plate thickness and the specific requirements of the purchasing specification, which may include additional rules from classification societies.) **Physical & Mechanical Properties** | Property | Typical Value / Requirement | Test Standard / Condition | | :--- | :--- | :--- | | **Yield Strength (Min)** | **32 ksi (220 MPa)** for plates ≤ 0.75 in. (20 mm). Decreases slightly with increasing thickness. | ASTM A370 | | **Tensile Strength** | **58 - 71 ksi (400 - 490 MPa)** | ASTM A370 | | **Elongation (Min)** | **22%** (in 8 in.) / **23%** (in 50 mm) for plates | ASTM A370 | | **Charpy V-Notch Impact Toughness** | **A mandatory requirement distinguishing it from A36.**
Typically tested at **+10°C (50°F)** or **0°C (32°F)**.
Minimum average energy: **20 J (15 ft-lbf)** for longitudinal specimens (common requirement). | ASTM A370 / ASTM A673 (Frequency H, P, or as ordered) | | **Density** | 7.85 g/cm³ (0.284 lb/in³) | - | | **Modulus of Elasticity** | 29,000 ksi (200 GPa) | - | | **Poisson's Ratio** | 0.29 | - | **Key Distinguishing Feature vs. ASTM A36** While chemically and mechanically similar, **ASTM A131 Grade CS is always supplied with certified impact toughness test results** at a specified temperature, making it suitable for regulated marine environments. ASTM A36 generally has no mandatory impact test requirement unless specified by the purchaser. **Product Forms & Applications** * **Forms:** * Plates * Bars * Structural Shapes (beams, channels, angles) * **Typical Marine Applications:** * **Internal Structures:** Decks, bulkheads, and framing in areas of moderate stress and non-exposed locations. * **Secondary Structures:** Superstructure components, platform gratings, ladders, accommodations, and non-critical brackets. * **Barges and Workboats:** Hull and structural components for inland and coastal vessels. * **Foundations and Machinery Seating:** For equipment within the ship. * **General Fabrication:** Where marine classification society approval is required. **Advantages of ASTM A131 Grade CS** * **Cost-Effectiveness:** More economical than higher-grade HSLA steels like AH36. * **Excellent Fabricability:** Easy to cut, form, bend, and weld using all standard methods. * **Proven Performance:** Long history of reliable use in marine construction. * **Mandatory Toughness Assurance:** Provides a defined level of impact resistance for marine safety, unlike plain A36. * **Wide Availability:** Readily available from mills approved by marine classification societies. **Conclusion** **ASTM A131 Grade CS** is the workhorse **carbon steel** of the maritime industry. It offers a reliable balance of strength, ductility, and fabricability for a vast array of marine structural applications. Its key value lies in being a **classified and toughness-tested material** that meets the specific safety and quality control standards mandated for shipbuilding, distinguishing it from ordinary structural steels. -:- For detailed product information, please contact sales. -: ASTM A131 Steel, Grade CS Specification Dimensions Size： Diameter 20-1000 mm Length <5967 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 A131 Steel, Grade CS Properties -:- For detailed product information, please contact sales. -:

Spherical ASTM A131 Steel Powder, Grade CS Particle Size Description -:- For detailed product information, please contact sales. -: Applications of Spherical ASTM A131 Steel Powder, Grade CS -:- For detailed product information, please contact sales. -: -:- For detailed product information, please contact sales. -: Applications of ASTM A131 Steel Spherical Powder, Grade CS -:- For detailed product information, please contact sales. -: Chemical Identifiers ASTM A131 Steel Spherical Powder, Grade CS -:- For detailed product information, please contact sales. -:

Packing of ASTM A131 Steel Spherical Powder, Grade CS -:- 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 Spherical Powder 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 2438 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