ASTM A709 Steel Seamless tube, Grade 100 and 100W

ASTM A709 Steel Seamless tube, Grade 100 and 100W, ≤ 64 mm Product Information -:- For detailed product information, please contact sales. -: ASTM A709 Steel Seamless tube, Grade 100 and 100W, ≤ 64 mm Synonyms -:- For detailed product information, please contact sales. -:

ASTM A709 Steel, Grade 100 and 100W, ≤ 64 mm Product Information -:- For detailed product information, please contact sales. -: **Product Introduction: ASTM A709 Steel, Grade 100 & 100W, Thickness ≤ 64 mm** **1. Overview** ASTM A709 is the standard specification for structural steel for bridges, covering various grades of carbon, high-strength low-alloy (HSLA), and quenched and tempered alloy steel. Grades 100 and 100W within this specification represent high-strength, quenched and tempered alloy steel plates with a minimum yield strength of 100 ksi (690 MPa). The "W" designation indicates enhanced atmospheric corrosion resistance, approximately twice that of standard carbon steel. This product is supplied in the quenched and tempered condition with a maximum thickness of 64 mm, making it suitable for critical, weight-sensitive structural applications requiring superior strength and durability. **2. International Standard** The primary governing standard is **ASTM A709/A709M - Standard Specification for Structural Steel for Bridges**. Compliance with this standard ensures material quality and performance for bridge construction and other structural uses. For projects with welded fabrication, supplementary standards like AWS D1.5 (Bridge Welding Code) are typically referenced. **3. Chemical Composition (Heat Analysis)** The chemical composition is carefully balanced to achieve the required high strength, toughness, and weldability. Grade 100W includes added alloying elements like copper, chromium, and nickel for corrosion resistance. *Typical Composition Ranges (Weight %):* | Element | Grade 100 | Grade 100W | | :--- | :--- | :--- | | Carbon (C) | 0.10 - 0.20 | 0.10 - 0.20 | | Manganese (Mn) | 0.60 - 1.00 | 0.60 - 1.00 | | Phosphorus (P) | ≤ 0.030 | ≤ 0.030 | | Sulfur (S) | ≤ 0.006 | ≤ 0.006 | | Silicon (Si) | 0.15 - 0.30 | 0.15 - 0.30 | | Nickel (Ni) | 0.25 - 1.00 | 0.25 - 1.00 | | Chromium (Cr) | 0.40 - 0.70 | 0.40 - 0.70 | | Molybdenum (Mo) | 0.15 - 0.30 | 0.15 - 0.30 | | Vanadium (V) | 0.03 - 0.08 | 0.03 - 0.08 | | Copper (Cu) | 0.15 - 0.50 | **0.20 - 0.40** | | Boron (B) | 0.0005 - 0.005 | 0.0005 - 0.005 | | **Corrosion Index (Cu+Cr/3+Ni/4)** | - | **≥ 0.40%** | *Note: Specific limits may vary by thickness and manufacturer. The corrosion index is a key differentiator for 100W.* **4. Mechanical & Physical Properties (for material ≤ 64 mm thick)** *Guaranteed Minimum Mechanical Properties (Longitudinal Test):* | Property | Grade 100 | Grade 100W | | :--- | :--- | :--- | | Yield Strength (min) | 100 ksi (690 MPa) | 100 ksi (690 MPa) | | Tensile Strength | 110-130 ksi (760-895 MPa) | 110-130 ksi (760-895 MPa) | | Elongation in 2 in (min) | 19% | 19% | | **Charpy V-Notch Impact Energy** | | | | Test Temperature | -40°F (-40°C) | -40°F (-40°C) | | Minimum Avg. Energy | 35 ft-lbf (47 J) | 35 ft-lbf (47 J) | *Typical Physical Properties:* * Density: ~0.284 lb/in³ (7.85 g/cm³) * Modulus of Elasticity: 29,000 ksi (200 GPa) * Poisson's Ratio: 0.29 * Coefficient of Thermal Expansion: 6.5 x 10⁻⁶ /°F (11.7 x 10⁻⁶ /°C) **5. Product Applications** This high-performance steel is primarily engineered for demanding structural applications where reducing weight, increasing load capacity, and ensuring long-term integrity are paramount: * **Bridge Construction:** Primary members in long-span bridges (girders, trusses, arches), splice plates, and critical connections where high strength minimizes material use and dead load. * **Heavy-Duty Structures:** Frame components for high-rise buildings, offshore platforms, crane booms, and military bridges. * **Transportation Infrastructure:** Components for specialized heavy-haul vehicles and railway cars. * **Grade 100W Specific Use:** Ideal for bridge and architectural applications exposed to de-icing salts or marine environments (coastal bridges), often used in a bare (unpainted) condition or with protective coatings for extended service life. **6. Key Characteristics & Advantages** * **Exceptional Strength-to-Weight Ratio:** Enables lighter, more efficient structural designs. * **High Toughness:** Excellent impact resistance at low service temperatures, ensuring fracture-critical safety. * **Good Weldability:** Requires controlled welding procedures (preheat, low-hydrogen electrodes) but can be successfully welded for fabrication. * **Atmospheric Corrosion Resistance (100W):** Significantly longer service life in corrosive environments, reducing maintenance costs. * **Fabricability:** Can be sheared, punched, and formed with appropriate techniques considering its high strength. **Conclusion:** ASTM A709 Grades 100 and 100W (≤64 mm) represent the pinnacle of high-strength structural steel plate for bridge engineering. By offering a minimum yield strength of 690 MPa alongside guaranteed low-temperature toughness, they facilitate innovative, economical, and durable designs. The choice between Grade 100 and the weathering Grade 100W is dictated by the specific environmental exposure and lifecycle cost considerations of the project. -:- For detailed product information, please contact sales. -: ASTM A709 Steel, Grade 100 and 100W, ≤ 64 mm Specification Dimensions Size： Diameter 20-1000 mm Length <5698 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 A709 Steel, Grade 100 and 100W, ≤ 64 mm Properties -:- For detailed product information, please contact sales. -:

Applications of ASTM A709 Steel Seamless tube, Grade 100 and 100W, ≤ 64 mm -:- For detailed product information, please contact sales. -: Chemical Identifiers ASTM A709 Steel Seamless tube, Grade 100 and 100W, ≤ 64 mm -:- For detailed product information, please contact sales. -:

Packing of ASTM A709 Steel Seamless tube, Grade 100 and 100W, ≤ 64 mm -:- 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 2169 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