Spherical ASTM A573 Steel Powder, grade 70

ASTM A573 Steel Spherical Powder, grade 70 Product Information -:- For detailed product information, please contact sales. -: ASTM A573 Steel Spherical Powder, grade 70 Synonyms -:- For detailed product information, please contact sales. -: -:- For detailed product information, please contact sales. -: Spherical ASTM A573 Steel Powder, grade 70 characteristics -:- For detailed product information, please contact sales. -: Spherical ASTM A573 Steel Powder, grade 70 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 A573 Steel Powder, grade 70 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 A573 Steel Powder, grade 70 Chemical Composition -:- For detailed product information, please contact sales. -: -:- For detailed product information, please contact sales. -: ASTM A573 Steel, grade 70 Product Information -:- For detailed product information, please contact sales. -: ### **Product Introduction: ASTM A573/A573M Steel, Grade 70** **1. Overview & International Standard** ASTM A573/A573M, titled "*Standard Specification for Structural Carbon Steel Plates of Improved Toughness*," defines a series of carbon steel plates known for their enhanced notch toughness compared to standard carbon structural steels. **Grade 70** (corresponding to **Grade 485** in metric units) is a key grade within this specification, offering a minimum yield strength of 70 ksi (485 MPa). This specification is an international standard published by **ASTM International** (formerly the American Society for Testing and Materials). It is widely recognized and used in global construction, manufacturing, and engineering projects. The dual designation "A573/A573M" indicates it covers both inch-pound units (A573) and SI units (A573M). **2. Key Characteristics** * **Improved Toughness:** The primary advantage of A573 Grade 70 over ordinary carbon steels is its better resistance to brittle fracture, especially at lower temperatures or in applications with impact loading. * **Moderate Strength:** With a yield strength of 70 ksi, it provides a good balance between strength, formability, and weldability. * **Good Weldability:** Its controlled carbon content and chemistry make it readily weldable using common methods, though proper procedures should always be followed. **3. Chemical Composition (Requirement by ASTM A573/A573M)** The composition is specified for plates up to 4 inches (100 mm) in thickness. For plates over 2 inches, slightly different limits may apply. | Element | Composition, % (max, unless range is specified) | | :--- | :--- | | **Carbon (C)** | 0.23 | | **Manganese (Mn)** | 0.85 - 1.20 | | **Phosphorus (P)** | 0.035 | | **Sulfur (S)** | 0.040 | | **Silicon (Si)** | 0.15 - 0.40 | *Note:* Copper (Cu) content may be specified with a minimum of 0.20% when enhanced atmospheric corrosion resistance is required. **4. Mechanical & Physical Properties** * **Yield Strength:** **70 ksi min. (485 MPa min.)** * **Tensile Strength:** 80 - 100 ksi (550 - 690 MPa) * **Elongation:** * In 8-in. (200-mm) gauge length: **21% min.** * In 2-in. (50-mm) gauge length: **25% min.** * **Notch Toughness (Charpy V-Impact):** A key requirement. Tests are conducted at **70°F (21°C)**. The minimum average absorbed energy for three specimens is **20 ft-lbf (27 J)**. * **Typical Physical Properties:** * **Density:** 0.284 lb/in³ (7,850 kg/m³) * **Modulus of Elasticity (E):** 29,000 ksi (200 GPa) * **Poisson's Ratio:** 0.29 * **Coefficient of Thermal Expansion:** 6.5 x 10⁻⁶ /°F (11.7 x 10⁻⁶ /°C) from 68-212°F (20-100°C) **5. Common Product Applications** Due to its combination of strength and improved toughness, ASTM A573 Grade 70 is specified for critical structural components where reliability under load and resistance to impact are important. * **Structural Fabrications:** Heavy-duty building frames, supports, and bases for machinery. * **Pressure Vessels & Storage Tanks:** For moderate pressure service where notch toughness is a design consideration. * **Shipbuilding & Offshore Structures:** Components such as hull plating, decks, and superstructures. * **Bridge Construction:** For girders, floor beams, and other load-bearing elements. * **Mining & Material Handling Equipment:** Chutes, buckets, and structural members subject to abrasion and impact. * **General Heavy Manufacturing:** Where a notch-tough steel plate with higher strength than A36 is required. **6. Availability & Comparison** * **Forms:** Primarily supplied as plates, which can be further cut, formed, and welded into final shapes. * **Comparison with Other Grades:** * **Vs. ASTM A36:** A573 Gr.70 offers higher strength and mandated toughness, whereas A36 has no standardized impact requirements. * **Vs. ASTM A572 Gr. 50:** Both have toughness requirements, but A572 Gr.50 is a high-strength low-alloy (HSLA) Columbium-Vanadium steel, while A573 Gr.70 is a carbon-manganese-silicon steel. * **Within A573:** It is stronger than **Grade 65** (60 ksi yield) and **Grade 58** (50 ksi yield), offering a mid-range option in the specification. **Conclusion** ASTM A573 Grade 70 is a versatile and reliable carbon steel plate designed for structural applications demanding enhanced toughness alongside moderate high strength. Its standardized chemistry and mechanical properties, governed by the international ASTM specification, ensure consistent performance and make it a preferred material for engineers and fabricators in heavy industry and construction worldwide. -:- For detailed product information, please contact sales. -: ASTM A573 Steel, grade 70 Specification Dimensions Size： Diameter 20-1000 mm Length <5942 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 A573 Steel, grade 70 Properties -:- For detailed product information, please contact sales. -:

Spherical ASTM A573 Steel Powder, grade 70 Particle Size Description -:- For detailed product information, please contact sales. -: Applications of Spherical ASTM A573 Steel Powder, grade 70 -:- For detailed product information, please contact sales. -: -:- For detailed product information, please contact sales. -: Applications of ASTM A573 Steel Spherical Powder, grade 70 -:- For detailed product information, please contact sales. -: Chemical Identifiers ASTM A573 Steel Spherical Powder, grade 70 -:- For detailed product information, please contact sales. -:

Packing of ASTM A573 Steel Spherical Powder, grade 70 -:- 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 2413 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