ASTM A570 Steel Seamless tube, grade B

ASTM A570 Steel Seamless tube, grade B, sheet and strip Product Information -:- For detailed product information, please contact sales. -: ASTM A570 Steel Seamless tube, grade B, sheet and strip Synonyms -:- For detailed product information, please contact sales. -:

ASTM A570 Steel, grade B, sheet and strip Product Information -:- For detailed product information, please contact sales. -: ## **Product Datasheet: ASTM A570 Grade B Steel Sheet and Strip** **Product Overview** ASTM A570 Grade B is a **commercial quality carbon steel sheet and strip** primarily intended for **cold forming and moderate strength applications**. As part of the A570 series of structural quality steels, Grade B offers a guaranteed minimum yield strength of 40 ksi (275 MPa), providing a basic increase in load-bearing capacity over the lowest Grade A. It is produced to meet specific mechanical property requirements rather than strict chemical limits, making it a versatile and cost-effective material for a wide range of fabricated products. This grade is typically supplied in the **as-rolled, non-skin passed** condition, but can also be supplied with various surface finishes (e.g., hot-rolled pickled and oiled) to suit fabrication needs. **Key International Standards** * **Primary Standard:** **ASTM A570 / A570M** - Standard Specification for Steel, Sheet and Strip, Carbon, Structural, Hot-Rolled. * **Governing Specification:** This product conforms to the requirements for **Grade B** as defined in ASTM A570. * **Quality Designation:** **Commercial Quality (CQ)** or **Structural Quality (SQ)**. It is suitable for parts where bending, moderate forming, and welding are primary operations. * **Material Condition:** Typically supplied in the **hot-rolled** condition. It may be specified as **HRPO (Hot Rolled, Pickled and Oiled)** for improved surface quality and paint adherence. * **Related Standards:** Comparable to **SAE J403 1010** series steels and international grades like **EN 10025-2 S235JR** (though strength levels differ). It is a lower-cost alternative to more formable drawing quality (DQ) steels for non-critical parts. **Chemical Composition (Weight % - Typical Ranges, Not Mandated)** *ASTM A570 is a **mechanical property** specification; chemical composition is not mandated but is typically controlled by the producer to achieve the required properties.* | Element | Typical Range for Grade B (Producer's Aim) | Note | | :--- | :--- | :--- | | **Carbon (C)** | 0.05 - 0.15% | Low carbon for good weldability and formability. | | **Manganese (Mn)** | 0.30 - 0.60% | Provides solid solution strengthening. | | **Phosphorus (P)** | ≤ 0.035% | -- | | **Sulfur (S)** | ≤ 0.035% | -- | | **Silicon (Si)** | ≤ 0.30% | -- | | **Carbon Equivalent (C.E. IIW)** | Typically < 0.30 | Excellent weldability. | **Physical & Mechanical Properties (Guaranteed Minimums)** | Property | Requirement (ASTM A570 Grade B) | Typical Performance / Notes | | :--- | :--- | :--- | | **Yield Strength (Min)** | 40 ksi (275 MPa) | Typically 40 - 50 ksi (275 - 345 MPa) | | **Tensile Strength** | 50 ksi (345 MPa) min | Typically 55 - 65 ksi (380 - 450 MPa) | | **Elongation in 2" (Min)** | 23% (for thickness ≤ 0.229") | Good ductility for basic forming. | | **Modulus of Elasticity** | ~29,000 ksi (200 GPa) | Standard for carbon steel. | | **Hardness (Approx., HRB)** | -- | Typically 60-75 HRB. | | **Key Feature** | **Economical Structural Forming Steel:** Provides a guaranteed 40 ksi yield point at a lower cost than HSLA or drawing quality steels, making it ideal for a vast array of general fabrication and structural components where complex deep drawing is not required. | **Product Applications** ASTM A570 Grade B sheet and strip are widely used in fabricated products across multiple industries where a balance of low cost, moderate strength, and reasonable formability is sufficient. * **General Fabrication:** Cabinets, frames, guards, brackets, and chassis for industrial and agricultural equipment. * **Building Products:** Roof and floor decking, wall panels, and light structural members. * **Automotive & Transportation:** Non-critical structural parts, truck body components, trailer side rails, and wheel covers. * **Storage & Material Handling:** Shelving units, pallet racks, bins, and container components. * **HVAC & Ductwork:** Supports, housings, and non-pressurized duct sections. **Advantages & Fabrication Notes** * **Excellent Weldability:** Due to its low carbon content and carbon equivalent, it can be easily welded using all standard processes (SMAW, GMAW, GTAW, Resistance Spot Welding) with minimal risk of cracking. Preheating is generally not required. * **Good Formability:** Suitable for **moderate cold forming** operations such as bending, roll forming, and shallow drawing. For severe forming (e.g., deep drawing, complex stamping), Drawing Quality (DQ) or Special Killed (SK) steels are recommended. * **Cost-Effectiveness:** One of the most economical hot-rolled steel grades available for achieving a 40 ksi yield strength. Its property-based specification reduces production costs. * **Surface Considerations:** Standard hot-rolled mill scale is present unless specified as **HRPO (Pickled and Oiled)**. HRPO provides a cleaner, scale-free surface that is ideal for painting or further processing like galvanizing. * **Dimensional Tolerances:** Conforms to standard hot-rolled sheet and strip tolerances as defined in ASTM A568. * **Limitations:** Not intended for highly stressed, fracture-critical, or dynamic load applications. Not suitable for applications requiring guaranteed impact toughness (Charpy values) unless specially ordered with supplementary requirements. **Disclaimer:** This datasheet provides general information on **ASTM A570 Grade B** hot-rolled sheet and strip. For procurement, specify the **standard (A570), grade (B), dimensions, and condition (e.g., HR, HRPO)**. This is a **general-purpose structural steel** and should be selected based on mechanical property needs. If specific chemical composition is required for welding or forming consistency, consider specifying a chemistry-based standard like **ASTM A1011** or **SAE J403**. For applications involving exposed atmospheric conditions, consider corrosion-resistant coated products (galvanized, Galvalume) or weathering steels. Fabrication and design must be performed in accordance with standard engineering practices for the intended application. -:- For detailed product information, please contact sales. -: ASTM A570 Steel, grade B, sheet and strip Specification Dimensions Size： Diameter 20-1000 mm Length <4712 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 B, sheet and strip Properties -:- For detailed product information, please contact sales. -:

Applications of ASTM A570 Steel Seamless tube, grade B, sheet and strip -:- For detailed product information, please contact sales. -: Chemical Identifiers ASTM A570 Steel Seamless tube, grade B, sheet and strip -:- For detailed product information, please contact sales. -:

Packing of ASTM A570 Steel Seamless tube, grade B, sheet and strip -:- 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 Seamless tube 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 1183 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