Spherical ASTM A570 Steel Powder, grade 30

ASTM A570 Steel Spherical Powder, grade 30 Product Information -:- For detailed product information, please contact sales. -: ASTM A570 Steel Spherical Powder, grade 30 Synonyms -:- For detailed product information, please contact sales. -: -:- For detailed product information, please contact sales. -: Spherical ASTM A570 Steel Powder, grade 30 characteristics -:- For detailed product information, please contact sales. -: Spherical ASTM A570 Steel Powder, grade 30 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 A570 Steel Powder, grade 30 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 A570 Steel Powder, grade 30 Chemical Composition -:- For detailed product information, please contact sales. -: -:- For detailed product information, please contact sales. -: ASTM A570 Steel, grade 30 Product Information -:- For detailed product information, please contact sales. -: ## **Technical Data Sheet: ASTM A570 Steel, Grade 30** ### **1. Product Overview** ASTM A570 Grade 30 is a low-cost, carbon steel sheet and strip material primarily intended for structural and general purpose applications where high strength is not the primary requirement. As part of the A570 specification covering seven strength grades (30, 33, 36, 40, 45, 50, 55), Grade 30 represents the entry-level strength category with a minimum yield strength of 30 ksi (205 MPa). This hot-rolled steel is characterized by its simple chemistry, excellent formability, weldability, and cost-effectiveness, making it suitable for a wide range of manufactured products, light structural components, and general fabrication where more expensive high-strength steels are unnecessary. ### **2. International Standards & Specifications** - **Primary Standard:** ASTM A570/A570M - *Standard Specification for Steel, Sheet and Strip, Carbon, Hot-Rolled, Structural Quality* - **Dimensional Standards:** - ASTM A568/A568M (General Requirements for Steel, Sheet, Carbon, and High-Strength, Hot-Rolled and Cold-Rolled) - ASTM A749/A749M (General Requirements for Steel, Strip, Carbon and High-Strength, Hot-Rolled) - **International Equivalents:** - **EN Standard:** EN 10025-2 Grade S235JR (similar strength and application) - **JIS Standard:** JIS G3131 SPHC (Hot-rolled steel sheets and strips for general use) - **ISO Standard:** ISO 3573 Grade CR1 (Commercial quality hot-rolled carbon steel sheet) - **GB/T Standard:** GB/T 912 Q235 (Carbon structural steel sheets and strips) - **Canadian Standard:** CSA G40.21 230W (similar strength structural steel) - **Australian Standard:** AS 1594 Grade HA250 (similar mechanical properties) ### **3. Chemical Composition (Heat Analysis, % by Weight)** | Element | Maximum (%) | Typical Range (%) | Notes | |---------|-------------|------------------|-------| | Carbon (C) | 0.25 | 0.08 - 0.20 | Controlled for weldability and formability | | Manganese (Mn) | 0.90 | 0.30 - 0.60 | Standard range for strength and deoxidation | | Phosphorus (P) | 0.04 | 0.008 - 0.020 | Impurity control | | Sulfur (S) | 0.05 | 0.015 - 0.030 | Impurity control | | Silicon (Si)* | 0.40 (or optional) | 0.10 - 0.30 | Deoxidizer when specified | | Copper (Cu)** | - | 0.20 (when specified) | Optional for atmospheric corrosion resistance | *Silicon content is optional and may be specified when semi-killed or killed steel is required. **Copper may be required when specified for atmospheric corrosion resistance. **Key Metallurgical Features:** - **Deoxidation Practice:** Typically rimmed, capped, or semi-killed steel - **Carbon Equivalent (Ceq):** Typically 0.15-0.25 (very low, excellent for welding) - **Quality Designation:** Structural quality with guaranteed mechanical properties - **Inclusion Control:** Commercial quality with standard inclusion levels ### **4. Mechanical Properties** **Minimum Required Properties:** | Property | Requirement | Test Standard | |----------|-------------|---------------| | **Tensile Strength, min** | 49 ksi (340 MPa) | ASTM A370 | | **Yield Strength (0.5% extension), min** | 30 ksi (205 MPa) | ASTM A370 | | **Elongation in 2 in. (50 mm), min** | 23% (for thickness ≤ 0.229 in./5.8 mm) | ASTM A370 | | | 25% (for thickness > 0.229 in./5.8 mm) | | **Typical Achieved Properties:** - **Tensile Strength:** 52-58 ksi (360-400 MPa) - **Yield Strength:** 32-38 ksi (220-260 MPa) - **Elongation:** 28-35% in 2 inches - **Yield-to-Tensile Ratio:** 0.60-0.70 (excellent for forming) - **Hardness:** 65-85 HRB (Rockwell B scale) **Impact Properties:** - Charpy testing not typically required for Grade 30 - When specified, typically tested at room temperature - Good impact resistance at normal service temperatures ### **5. Physical Properties** - **Modulus of Elasticity:** 29,000 ksi (200 GPa) - **Shear Modulus:** 11,200 ksi (77 GPa) - **Poisson's Ratio:** 0.29 - **Density:** 0.283 lb/in³ (7.85 g/cm³) - **Thermal Conductivity:** 51.9 W/m·K at 100°C - **Coefficient of Thermal Expansion:** 6.5 × 10⁻⁶/°F (11.7 × 10⁻⁶/°C) - **Specific Heat:** 0.46 kJ/kg·K at 20°C - **Electrical Resistivity:** 0.17 μΩ·m at 20°C - **Magnetic Properties:** Ferromagnetic ### **6. Material Forms & Availability** - **Sheet:** Typically 0.059 to 0.229 inch (1.5 to 5.8 mm) thickness - **Strip:** Narrow width coils or cut lengths - **Widths:** Up to 60 inches (1524 mm) typically available - **Surface Finish:** Standard hot-rolled finish with mill scale - **Edges:** Mill edge, slit edge, or sheared edge as specified ### **7. Processing Characteristics** **Hot-Rolled Condition:** - Supplied in as-hot-rolled condition - Mill scale typically present on surface - May be pickled and oiled when specified - No additional heat treatment required for most applications **Surface Preparation:** - **Mill Scale:** Typically removed by pickling, abrasive blasting, or mechanical means - **Surface Roughness:** Typical Ra 40-100 microinches (1.0-2.5 μm) - **Painting:** Requires scale removal and proper surface preparation ### **8. Key Product Characteristics** 1. **Excellent Formability:** High elongation allows complex forming operations 2. **Superior Weldability:** Low carbon content minimizes weld-related issues 3. **Cost-Effectiveness:** Most economical structural steel grade 4. **Good Machinability:** Easy to machine with standard tools 5. **Predictable Performance:** Consistent properties across production lots 6. **Wide Availability:** Readily available from steel service centers ### **9. Primary Applications** **Light Structural Components:** - Building framing members (purlins, girts, studs) - Light load-bearing structures - Support brackets and hangers - Base plates and mounting plates - Temporary structures and shoring **Manufactured Products:** - Electrical enclosures and cabinets - Machine guards and safety shields - Equipment housings and covers - Tool boxes and storage containers - Agricultural equipment components **Automotive & Transportation:** - Truck body panels and components - Trailer structural members - Vehicle floor pans and underbody components - Shipping container components - Material handling equipment **Construction & Building Products:** - Metal building components - Roof and wall panel substrates - Door and window frames - Stair treads and risers - Handrails and guardrails **Industrial Equipment:** - Conveyor system components - Work benches and tables - Storage rack components - Machinery bases and frames - Ventilation ductwork **Consumer Products:** - Furniture frames - Appliance components - Recreational equipment - Display fixtures - Hardware components ### **10. Fabrication Guidelines** **Welding:** - **Recommended Processes:** SMAW, GMAW, FCAW, GTAW, Resistance welding - **Electrodes:** E60XX or E70XX series electrodes - **Preheat:** Generally not required - **Interpass Temperature:** No specific limitations - **Procedure Qualification:** Simple, follows AWS D1.3 or similar codes **Cutting:** - **Shearing:** Excellent for thicknesses up to 0.25 inch - **Plasma Cutting:** Suitable for all thicknesses - **Laser Cutting:** Excellent for precision cutting - **Oxy-Fuel Cutting:** Suitable but may produce heavy scale on cut edges - **Punching:** Excellent with standard tooling **Forming:** - **Bending:** Minimum bend radius typically 1× thickness for 90° bends - **Roll Forming:** Excellent for continuous forming operations - **Stamping:** Suitable for moderate draw operations - **Deep Drawing:** Good for shallow to moderate draws - **Springback:** Minimal, easily compensated in tooling **Machining:** - **Tool Materials:** High-speed steel or carbide tools - **Cutting Speeds:** 300-500 SFM for turning operations - **Feeds:** Moderate to heavy feeds possible - **Chip Formation:** Produces continuous chips - **Coolant:** Water-soluble coolants generally sufficient ### **11. Surface Treatment & Finishing** **Scale Removal:** - **Pickling:** Most common method, followed by oiling - **Abrasive Blasting:** Produces anchor pattern for painting - **Mechanical Descale:** Brushing or grinding **Coating Systems:** - **Painting:** Excellent adhesion with proper surface preparation - **Galvanizing:** Suitable for hot-dip galvanizing - **Powder Coating:** Commonly used for finished products - **Electroplating:** Suitable for decorative finishes **Corrosion Protection:** - **Atmospheric Exposure:** Moderate resistance, requires protective coatings - **Indoor Applications:** Generally adequate without coating - **Outdoor Applications:** Requires protective coating systems ### **12. Quality Assurance & Testing** **Standard Requirements:** - Chemical analysis from each heat of steel - Tensile testing from each heat or lot - Bend testing may be specified - Visual inspection for surface defects **Supplementary Requirements (When Specified):** - S1: Bend test (180° flat bend) - S2: Copper-bearing steel - S3: Special killed steel - S4: Chemistry only (no mechanical tests) - S5: Cold bending test **Certification:** - Mill test reports available - Heat number traceability - Standard commercial certifications ### **13. Comparison with Similar Steels** | Characteristic | A570 Grade 30 | A36 | A1011 HSLAS Grade 30 | |----------------|---------------|-----|----------------------| | **Yield Strength** | 30 ksi (205 MPa) | 36 ksi (250 MPa) | 30 ksi (205 MPa) | | **Product Form** | Sheet & Strip | Plates, Shapes, Bars | Sheet & Strip | | **Cost** | Lowest | Low | Higher | | **Formability** | Excellent | Good | Good | | **Surface Quality** | Standard HR | Standard HR | Improved surface | | **Typical Use** | Light structures | General structures | Automotive parts | ### **14. Design Considerations** **Structural Design:** - Use AISI S100 for cold-formed steel design - Consider local buckling in thin sections - Account for deflection limitations - Use appropriate safety factors **Forming Considerations:** - Account for springback in precision forming - Consider grain direction in bending operations - Allow for material thinning in deep drawing **Connection Design:** - Welded connections preferred - Mechanical fasteners suitable - Adhesive bonding possible with surface preparation ### **15. Economic Considerations** **Cost Factors:** - **Material Cost:** Lowest among structural steel sheet products - **Fabrication Cost:** Low due to easy workability - **Tooling Cost:** Minimal for standard operations - **Life Cycle Cost:** Competitive for indoor applications **Value Proposition:** - Lowest cost structural steel option - Minimal fabrication challenges - Wide availability reduces procurement costs - Suitable for high-volume production ### **16. Industry Codes & Standards** - **AISI S100:** North American Specification for the Design of Cold-Formed Steel Structural Members - **AWS D1.3:** Structural Welding Code - Sheet Steel - **ASCE 7:** Minimum Design Loads for Buildings and Other Structures - **IBC:** International Building Code (for applicable applications) - **NFPA:** National Fire Protection Association codes ### **17. Limitations & Special Considerations** 1. **Not Recommended For:** - Primary load-bearing structures in buildings - Pressure vessel applications - High-temperature service (>800°F/427°C) - Critical structural applications without engineering analysis 2. **Environmental Limitations:** - Poor corrosion resistance without protection - Not suitable for marine or chemical environments without coating - May rust if exposed to moisture 3. **Thickness Limitations:** - Maximum thickness typically 0.229 inch (5.8 mm) - Thinner gauges may have different mechanical properties ### **18. Environmental & Sustainability** - **Recyclability:** 100% recyclable - **Energy Content:** Lower than higher strength steels (less alloying) - **Manufacturing Impact:** Standard steel production process - **Life Cycle:** Good for applications with protective coatings ### **19. Project Specification Guidelines** **Essential Specification Elements:** 1. ASTM designation and grade (A570, Grade 30) 2. Product form (sheet or strip) 3. Dimensions (thickness, width, length) 4. Surface condition (as-rolled, pickled & oiled, etc.) 5. Edge condition (mill edge, slit edge) 6. Supplementary requirements if needed **Sample Specification:** "Steel sheet shall conform to ASTM A570, Grade 30, hot-rolled. Material shall have minimum yield strength of 30 ksi and minimum tensile strength of 49 ksi. Material to be supplied pickled and oiled, with slit edges." ### **20. Future Developments & Market Trends** - **Processing Improvements:** Better surface quality through improved rolling - **Sustainability:** Increased recycled content - **Digital Integration:** Improved traceability systems - **Market Trends:** Continued demand for cost-effective structural materials ### **21. Disclaimer & Important Notes** **User Responsibilities:** 1. Select appropriate material for intended application 2. Verify material meets design requirements 3. Follow proper fabrication and installation procedures 4. Provide adequate corrosion protection for exposed applications 5. Comply with applicable codes and standards **Manufacturer's Limitations:** - Properties guaranteed as tested per ASTM A570 - Surface condition as typical for hot-rolled products - No warranty against corrosion without protective coatings *ASTM A570 Grade 30 provides an economical solution for light structural and general fabrication applications where high strength is not required and cost-effectiveness is paramount.* -:- For detailed product information, please contact sales. -: ASTM A570 Steel, grade 30 Specification Dimensions Size： Diameter 20-1000 mm Length <5934 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 A570 Steel, grade 30 Properties -:- For detailed product information, please contact sales. -:

Spherical ASTM A570 Steel Powder, grade 30 Particle Size Description -:- For detailed product information, please contact sales. -: Applications of Spherical ASTM A570 Steel Powder, grade 30 -:- For detailed product information, please contact sales. -: -:- For detailed product information, please contact sales. -: Applications of ASTM A570 Steel Spherical Powder, grade 30 -:- For detailed product information, please contact sales. -: Chemical Identifiers ASTM A570 Steel Spherical Powder, grade 30 -:- For detailed product information, please contact sales. -:

Packing of ASTM A570 Steel Spherical Powder, grade 30 -:- 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 2405 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