ASTM A607 Steel, grade 45, cold rolled

ASTM A607 Steel, grade 45, cold rolled Product Information -:- For detailed product information, please contact sales. -: ASTM A607 Steel, grade 45, cold rolled Synonyms -:- For detailed product information, please contact sales. -:

ASTM A607 Steel, grade 45, cold rolled Product Information -:- For detailed product information, please contact sales. -: ## **Product Datasheet: ASTM A607 Grade 45 Cold-Rolled Steel Sheet & Strip** **Product Overview** ASTM A607 Grade 45 is a **cold-rolled, high-strength, low-alloy (HSLA) steel sheet and strip** designed for applications requiring enhanced strength and atmospheric corrosion resistance. As part of the A607 specification, which covers both hot- and cold-rolled products, the **cold-rolled** variant offers superior surface finish, tighter dimensional tolerances, and improved flatness compared to its hot-rolled counterpart. This grade provides a guaranteed **minimum yield strength of 45 ksi (310 MPa)** through columbium (niobium) or vanadium microalloying, combined with the inherent advantages of the cold reduction process. It is a premier choice for formed and fabricated components where strength, surface quality, and corrosion resistance are critical. **Key International Standards** * **Primary Standard:** **ASTM A607** - Standard Specification for Steel, Sheet and Strip, High-Strength, Low-Alloy, Columbium or Vanadium, or Both, Hot-Rolled and Cold-Rolled. * **Governing Specification:** This product conforms to the requirements for **Grade 45** in the **cold-rolled** condition as defined in ASTM A607. * **Type Classification:** **Type 1 (Columbium)** or **Type 2 (Vanadium)**. The type specifies the primary microalloying element used to achieve strength and grain refinement. * **Corrosion Resistance:** The specification requires a **minimum copper content of 0.20%**, providing approximately **twice the atmospheric corrosion resistance of plain carbon steels** without copper. This is a *standard feature* of A607, distinguishing it from non-weathering HSLA grades. * **Material Condition:** Supplied in the **cold-rolled, annealed, and temper-rolled** (skin passed) condition to achieve the specified mechanical properties and a smooth, paintable surface. **Chemical Composition (Weight % - ASTM A607 Grade 45 Requirements)** Chemistry is designed for strength, corrosion resistance, and good cold formability. | Element | Requirement (Max, unless noted) | Purpose & Note | | :--- | :--- | :--- | | **Carbon (C)** | 0.22% | Controlled for strength and weldability. | | **Manganese (Mn)** | 1.35% | Solid solution strengthening. | | **Phosphorus (P)** | 0.04% | Impurity control. | | **Sulfur (S)** | 0.05% | Impurity control. | | **Silicon (Si)** | 0.30% | Deoxidizer. | | **Copper (Cu)** | **0.20% min** | **Mandatory** for atmospheric corrosion resistance. | | **Columbium (Cb/Nb)** | 0.05% Max (Type 1) | Grain refiner for Type 1. | | **Vanadium (V)** | 0.15% Max (Type 2) | Precipitation strengthener for Type 2. | | **Carbon Equivalent (C.E. IIW)** | -- | Typically low, indicating excellent weldability. | **Physical & Mechanical Properties** | Property | Requirement (ASTM A607 Grade 45) | Advantage of Cold-Rolled Condition | | :--- | :--- | :--- | | **Yield Strength (Min)** | 45 ksi (310 MPa) | Consistent and uniform due to cold work and annealing. | | **Tensile Strength** | 60 ksi (415 MPa) min | Typically 65-75 ksi (448-517 MPa). | | **Elongation in 2" (Min)** | 22% | Good ductility for forming despite high strength. | | **Surface Finish** | **Smooth, matte finish** (temper rolled). | Superior to hot-rolled; ideal for painting, plating, or exposed applications. | | **Dimensional Tolerance** | Conforms to **ASTM A568** for cold-rolled sheet. | Tighter than hot-rolled, suitable for precision fabrication. | | **Atmospheric Corrosion Resistance** | ~2x that of plain carbon steel (A366/A569). | Integral property due to mandatory copper content. | | **Key Feature** | **Premium Cold-Rolled Weathering HSLA:** Combines the strength of microalloyed steel, the superior surface and dimensional quality of cold-rolled product, and guaranteed atmospheric corrosion resistance in a single, highly fabricable material. | **Product Applications** ASTM A607 Grade 45 cold-rolled sheet is specified for high-quality, exposed, or painted components requiring strength and durability. * **Automotive & Truck Components:** Structural body panels, chassis reinforcements, trailer side panels, and wheel housings. * **Agricultural & Construction Equipment:** Cab structures, fenders, guards, and access panels exposed to the elements. * **Building & Architecture:** Roof and wall cladding, curtain wall supports, trim, and decorative facades where a painted finish is applied. * **Electrical Enclosures & Cabinets:** For outdoor or corrosive indoor environments. * **HVAC Ductwork & Equipment Housings:** Where strength and corrosion resistance are beneficial. * **Appliances & Furniture:** For structural frames requiring a clean, paintable surface. **Advantages & Fabrication Notes** * **Excellent Weldability:** The low carbon content and microalloying result in a low carbon equivalent. All standard welding processes (GMAW, GTAW, Resistance Spot Welding) are applicable with minimal risk of cracking. Preheating is generally not required. * **Superior Formability:** The cold-rolled and annealed condition provides excellent ductility for **moderate to severe cold forming**, including bending, roll forming, drawing, and stamping. It is significantly more formable than hot-rolled HSLA of the same strength. * **Paint & Coating Performance:** The clean, smooth surface provides an excellent substrate for painting, powder coating, or plating, with superior adhesion and finish quality compared to hot-rolled. * **Corrosion Performance:** The weathering characteristic means that if the coating is scratched, the base steel forms a protective patina, reducing red rust spread and undercutting. * **Cost Premium:** Commands a higher price than hot-rolled A607 or A606 due to the additional cold rolling and annealing processes. **Disclaimer:** This datasheet describes **ASTM A607 Grade 45 Cold-Rolled** sheet and strip. For procurement, specify: **ASTM A607, Grade 45, Type (1 or 2 - if important), cold-rolled, and the required surface finish (e.g., matte, dull)**. Also reference **ASTM A568** for dimensional tolerances. **Important Distinctions:** * **vs. ASTM A606 (Type 4):** A607 is a *property-based* weathering steel, while A606 Type 4 is a *chemistry-based* weathering steel with slightly different guarantees. They are often considered equivalents, but A607 has defined minimum yield strengths. * **vs. Hot-Rolled A607:** The cold-rolled version offers better surface, formability, and tolerance control but at a higher cost. * **Application:** Not recommended for unpainted, fully exposed "weathering steel" aesthetic applications where mill scale and uniform patina are desired; hot-rolled A606 or A588 are better suited for that purpose. This material is ideal for engineered products where performance, appearance, and corrosion resistance are all valued. -:- For detailed product information, please contact sales. -: ASTM A607 Steel, grade 45, cold rolled Specification Dimensions Size： Diameter 20-1000 mm Length <4721 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 A607 Steel, grade 45, cold rolled Properties -:- For detailed product information, please contact sales. -:

Applications of ASTM A607 Steel, grade 45, cold rolled -:- For detailed product information, please contact sales. -: Chemical Identifiers ASTM A607 Steel, grade 45, cold rolled -:- For detailed product information, please contact sales. -:

Packing of ASTM A607 Steel, grade 45, cold rolled -:- 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 1192 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