Bethlehem Steel ASTM A656 Grade 80 Type 7,steel

Bethlehem Steel ASTM A656 Grade 80 Type 7, 3/16 to 3/4 in. thick, steel plate Product Information -:- For detailed product information, please contact sales. -: Bethlehem Steel ASTM A656 Grade 80 Type 7, 3/16 to 3/4 in. thick, steel plate Synonyms -:- For detailed product information, please contact sales. -:

Bethlehem Steel ASTM A656 Grade 80 Type 7, 3/16 to 3/4 in. thick, steel plate Product Information -:- For detailed product information, please contact sales. -: ### **Product Datasheet: Bethlehem Steel ASTM A656 Grade 80 Type 7 Steel Plate** **Product Overview** Bethlehem Steel ASTM A656 Grade 80 Type 7 is a premium, high-strength, low-alloy (HSLA) steel plate manufactured using Thermo-Mechanical Controlled Processing (TMCP). The “Type 7” designation indicates the plate is supplied in the **as-rolled condition**, eliminating the need for subsequent normalizing heat treatment while still achieving a fine-grained microstructure. Engineered to deliver an exceptional balance of **80 ksi minimum yield strength**, enhanced formability, and excellent weldability, this grade is ideal for weight-critical, high-performance applications. It was commercially available in thicknesses ranging from **3/16 inch (4.8 mm) to 3/4 inch (19 mm)**. **Key International Standards** * **Primary Standard:** **ASTM A656 / A656M** - Standard Specification for Hot-Rolled Structural Steel, High-Strength Low-Alloy Plate with Improved Formability. * **Governing Specification:** The product fully conforms to the requirements for Grade 80, Type 7 as defined in this standard. * **Note:** Bethlehem Steel’s proprietary rolling practices and precise chemistry control allowed it to consistently meet and often exceed the baseline requirements of ASTM A656. For contemporary equivalents, consult active steel producers adhering to this specification. **Chemical Composition (Weight % - ASTM A656 Limits & Typical Bethlehem Steel Range)** The chemistry is meticulously balanced with microalloying elements (Nb, V) to achieve precipitation strengthening and grain refinement during controlled rolling. | Element | ASTM A656 Requirement (Max, unless noted) | Typical Bethlehem Steel Aim / Range | | :--- | :--- | :--- | | **Carbon (C)** | 0.18% | 0.10 - 0.15% | | **Manganese (Mn)** | 1.60% | 1.20 - 1.50% | | **Phosphorus (P)** | 0.025% | ≤ 0.020% | | **Sulfur (S)** | 0.025% | ≤ 0.010% | | **Silicon (Si)** | 0.40% | 0.15 - 0.30% | | **Niobium (Nb)** | 0.05 - 0.15% | 0.05 - 0.10% | | **Vanadium (V)** | 0.08% (optional, often used with Nb) | 0.03 - 0.07% (commonly added) | | **Nitrogen (N)** | 0.015% | Controlled | | **Aluminum (Al)** | 0.01 - 0.10% (min. for grain refinement) | 0.02 - 0.06% | | **Carbon Equivalent (C.E.)** | - | Typically ~0.40 - 0.45 (excellent for its strength level) | **Physical & Mechanical Properties (ASTM A656 Grade 80 Requirements & Typical Performance)** | Property | ASTM A656 Grade 80 Requirement | Typical Bethlehem Steel Performance | | :--- | :--- | :--- | | **Yield Strength (Min)** | 80 ksi (550 MPa) | 85 - 95 ksi (586 - 655 MPa) | | **Tensile Strength** | 90 - 110 ksi (620 - 760 MPa) | 95 - 105 ksi (655 - 724 MPa) | | **Elongation in 2" (Min)** | 16% | 18 - 22% | | **Yield-to-Tensile Ratio** | Not specified, but inherently lower due to TMCP | Typically 0.85 - 0.90, indicating good strain hardening capacity | | **Modulus of Elasticity** | ~29,000 ksi (200 GPa) | ~29,000 ksi (200 GPa) | | **Density** | 0.284 lb/in³ (7.85 g/cm³) | 0.284 lb/in³ (7.85 g/cm³) | | **Key Feature** | **Improved Formability:** Offers superior cold bending and forming characteristics compared to conventional HSLA-80 grades due to its optimized microstructure and lower Y/T ratio. | | **Product Applications** This plate was specifically selected for demanding structural components where maximum strength-to-weight ratio, durability, and fabricability were paramount: * **Heavy-Duty Transportation:** Primary frame rails, extreme-duty suspension components, and reinforced sections for logging trucks, dump trucks, and specialty trailers. * **High-Performance Mining & Construction Equipment:** Critical stress members in excavator arms, loader booms, crane jibs, and shovel components subject to high dynamic loads. * **Material Handling:** Structural masts for high-capacity forklifts, heavy-duty crane runways, and lifting device frames. * **Energy & Forestry Equipment:** Chassis and boom structures for mobile drilling rigs and knuckleboom loaders. * **General High-Strength Fabrication:** Any component requiring 80 ksi yield strength coupled with the ability to be welded and formed without post-roll heat treatment. **Advantages & Fabrication Notes** * **Superior Weldability:** The low carbon content and controlled carbon equivalent minimize preheat requirements and reduce the risk of hydrogen-induced cracking. Standard HSLA welding procedures (using matching strength electrodes) are applicable. * **Excellent Formability:** The “Improved Formability” aspect of ASTM A656 allows for more aggressive cold bending (tighter radii) and forming operations than traditional Grade 80 steels without compromising integrity. * **As-Rolled Condition (Type 7):** Delivery in the as-rolled state provides cost and lead-time advantages over normalized grades, as no additional heat treatment is required. * **Legacy/Historical Product:** As Bethlehem Steel is defunct, this datasheet represents historical product data. Modern equivalents meeting ASTM A656 Gr 80 Type 7 are available from current steelmakers, often with even tighter property control. **Disclaimer:** This technical datasheet consolidates historical information on **Bethlehem Steel Corporation’s** specific product. For new designs or procurement, specify the active **ASTM A656 Grade 80 Type 7** standard and source material from qualified modern producers who can provide current Mill Test Certificates and fabrication guidelines. -:- For detailed product information, please contact sales. -: Bethlehem Steel ASTM A656 Grade 80 Type 7, 3/16 to 3/4 in. thick, steel plate Specification Dimensions Size： Diameter 20-1000 mm Length <4657 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. -: Bethlehem Steel ASTM A656 Grade 80 Type 7, 3/16 to 3/4 in. thick, steel plate Properties -:- For detailed product information, please contact sales. -:

Applications of Bethlehem Steel ASTM A656 Grade 80 Type 7, 3/16 to 3/4 in. thick, steel plate -:- For detailed product information, please contact sales. -: Chemical Identifiers Bethlehem Steel ASTM A656 Grade 80 Type 7, 3/16 to 3/4 in. thick, steel plate -:- For detailed product information, please contact sales. -:

Packing of Bethlehem Steel ASTM A656 Grade 80 Type 7, 3/16 to 3/4 in. thick, steel plate -:- 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 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 1128 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