ASTM A570 Steel Capillary, grade 33

ASTM A570 Steel Capillary, grade 33 Product Information -:- For detailed product information, please contact sales. -: ASTM A570 Steel Capillary, grade 33 Synonyms -:- For detailed product information, please contact sales. -:

ASTM A570 Steel, grade 33 Product Information -:- For detailed product information, please contact sales. -: ### **Product Introduction: ASTM A570 Grade 33 Steel** **ASTM A570 Grade 33** is a hot-rolled, carbon steel sheet and strip specifically designed for structural applications requiring a minimum yield strength of **33 ksi (230 MPa)**. As part of the economical A570 series, this grade offers an excellent balance between strength, formability, and cost-effectiveness, making it suitable for a wide range of fabricated structural components where moderate strength requirements must be met without compromising manufacturing efficiency. --- #### **1. International Standards & Grades** **Primary Standard:** **ASTM A570/A570M** - "Standard Specification for Steel, Sheet and Strip, Carbon, Hot-Rolled, Structural Quality" **Grade Classification:** - **Grade 33** [230 MPa] - Minimum yield strength 33 ksi - Other grades in A570 series: 30, 36, 40, 45, 50, 55 **International Equivalents:** - **EN 10025-2**: S235JR/S235J0 - **JIS G3101**: SS330 - **GB/T 700**: Q235 --- #### **2. Chemical Composition** The chemical composition requirements for ASTM A570 Grade 33: | Element | Composition (Maximum %) | |---|---| | Carbon (C) | 0.25 | | Manganese (Mn) | 0.90 | | Phosphorus (P) | 0.04 | | Sulfur (S) | 0.05 | | Silicon (Si) | 0.40 (optional) | **Key Composition Features:** - **Carbon Steel Base**: Simple and cost-effective chemical composition - **Controlled Carbon**: Optimized for weldability and formability - **Manganese Content**: Provides solid solution strengthening - **Optional Silicon**: Added as a deoxidizer when specified --- #### **3. Physical & Mechanical Properties** **Mechanical Properties:** | Property | Value | |---|---| | **Tensile Strength** | 450-520 MPa (65-75 ksi) | | **Yield Strength (min.)** | 230 MPa (33 ksi) | | **Elongation in 2" (min.)** | 20% | | **Elongation in 8" (min.)** | 23% | **Physical Properties:** - **Density**: 7.85 g/cm³ (0.284 lb/in³) - **Modulus of Elasticity**: 200 GPa (29,000 ksi) - **Poisson's Ratio**: 0.29 - **Thermal Conductivity**: 51.9 W/m·K - **Coefficient of Thermal Expansion**: 11.7 × 10⁻⁶/°C (20-100°C) --- #### **4. Product Applications** **Building Construction:** - Structural framing members - Roof purlins and girts - Floor decking and formwork - Wall studs and bracing **Transportation Industry:** - Truck and trailer body panels - Automotive structural reinforcements - Railway car interior components - Vehicle underbody shields **Industrial Equipment:** - Machinery frames and bases - Equipment guards and covers - Conveyor system components - Storage rack uprights **Agricultural Applications:** - Tractor body panels - Implement frames and brackets - Grain handling equipment - Livestock equipment components **Commercial Products:** - Storage shelving and racks - Office furniture frames - Display fixture components - Industrial cabinet structures --- #### **5. Fabrication Characteristics** **Welding Performance:** - **Excellent Weldability**: Compatible with all common welding processes - **Preheat Requirements**: Not typically required for thicknesses up to 1 inch - **Recommended Processes**: GMAW (MIG), GTAW (TIG), SMAW (Stick) - **Filler Metals**: E60XX or E70XX series electrodes **Forming & Machining:** - **Cold Forming**: Excellent capability with standard press brake equipment - **Minimum Bend Radius**: 0.75t for 90° bends (t = material thickness) - **Machinability**: Good (approximately 65% of B1112 steel) - **Shearing & Punching**: Excellent performance with conventional tooling **Surface Characteristics:** - Standard hot-rolled surface finish with mill scale - Suitable for most painting and coating systems after proper surface preparation - Pickled and oiled finish available for improved paint adhesion **Heat Treatment:** - Supplied in as-rolled condition - Can be stress-relieved if required for specific applications - Annealing possible for enhanced formability in severe forming operations --- ### **Technical Summary** ASTM A570 Grade 33 represents an optimal choice for structural applications requiring moderate strength combined with excellent manufacturability. Its position between Grade 30 and Grade 36 in the A570 series makes it particularly suitable for applications where the slightly higher strength of Grade 33 provides design advantages while maintaining the cost benefits of carbon steel. The material's consistent mechanical properties and predictable behavior during fabrication ensure reliable performance in finished products. While it lacks the specialized properties of high-strength low-alloy steels, its economical nature and ease of processing make it ideal for high-volume structural components across multiple industries. The grade's versatility and reliable performance have established it as a mainstream material choice for general structural fabrication where weight reduction and cost control are important considerations. -:- For detailed product information, please contact sales. -: ASTM A570 Steel, grade 33 Specification Dimensions Size： Diameter 20-1000 mm Length <4293 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 33 Properties -:- For detailed product information, please contact sales. -:

Applications of ASTM A570 Steel Capillary, grade 33 -:- For detailed product information, please contact sales. -: Chemical Identifiers ASTM A570 Steel Capillary, grade 33 -:- For detailed product information, please contact sales. -:

Packing of ASTM A570 Steel Capillary, grade 33 -:- 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 Capillary 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 764 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