ASTM A148 Grade 130-115 Cast Steel Tube,Pipe

ASTM A148 Grade 130-115 Cast Steel Tube Product Information -:- For detailed product information, please contact sales. -: ASTM A148 Grade 130-115 Cast Steel Tube Synonyms -:- For detailed product information, please contact sales. -:

ASTM A148 Grade 130-115 Cast Steel Product Information -:- For detailed product information, please contact sales. -: # **Product Name:** ASTM A148 Grade 130-115 Cast Steel **Overview** ASTM A148 Grade 130-115 is a **premium ultra-high-strength, quenched and tempered (Q&T) low-alloy cast steel**, representing one of the highest strength tiers within the ASTM A148 specification. Designated for the most demanding structural applications, it provides a **minimum tensile strength of 130 ksi (895 MPa) and a minimum yield strength of 115 ksi (795 MPa)**. Achieving this exceptional strength level requires precise alloy design, advanced melting practices, and a rigorously controlled heat treatment process. This grade is engineered for critical components where maximum load-bearing capacity in a minimal cross-section is paramount, and where it can be integrated into a design that accommodates its specialized fabrication requirements. **Key International Standards & Designation** * **Primary Standard:** **ASTM A148/A148M-21** - Standard Specification for Steel Castings, High Strength, for Structural Purposes. * **Grade Designation:** **Grade 130-115** * **130:** Minimum tensile strength in **kips per square inch (ksi)**, i.e., **130 ksi**. * **115:** Minimum yield strength (0.2% offset) in **ksi**, i.e., **115 ksi**. * **Metric Equivalents:** 130 ksi ≈ **895 MPa** (Tensile), 115 ksi ≈ **795 MPa** (Yield). * **Heat Treatment:** **Mandatory and Critical.** Supplied exclusively in the **quenched and tempered (Q&T) condition**. The process is highly specialized, often involving precise austenitizing, aggressive quenching (frequently in polymer or intensive oil), and tempering to achieve the unique strength-toughness balance. * **International Context:** There is no direct, ubiquitous equivalent. It occupies a niche similar to high-performance proprietary casting alloys or specific defense/aerospace specifications. In Europe, it might be compared to bespoke Q&T alloy steel grades. **Chemical Composition (Heat Analysis, % by weight, typical for achieving 130-115 properties)** Composition is optimized for supreme hardenability and strength, typically involving multiple alloying elements. * **Carbon (C):** **0.25 - 0.35%** (Carefully balanced; sufficient for strength but controlled to maintain some toughness and weldability). * **Manganese (Mn):** **0.80 - 1.20%** * **Silicon (Si):** **0.20 - 0.60%** * **Chromium (Cr):** **0.80 - 1.50%** (Essential for hardenability, strength, and tempering resistance). * **Molybdenum (Mo):** **0.20 - 0.40%** (Critical for deep hardenability, high-temperature strength, and mitigating temper embrittlement). * **Nickel (Ni):** **1.00 - 2.00%** (Commonly used to enhance hardenability, particularly in thick sections, and to improve low-temperature toughness). * **Vanadium (V):** **May be added (e.g., 0.03-0.10%)** for grain refinement and secondary hardening during tempering. * **Phosphorus (P):** **≤ 0.015%** (Very low - typical for premium grades). * **Sulphur (S):** **≤ 0.015%** (Very low - for improved ductility and toughness). **Physical & Mechanical Properties (in quenched and tempered condition)** * **Tensile Strength (Rm):** **≥ 130 ksi (895 MPa)** * **Yield Strength (Rp0.2):** **≥ 115 ksi (795 MPa)** * **Elongation in 2 inches (50 mm):** **≥ 10%** (Minimum). Despite the extreme strength, it retains measurable ductility. * **Reduction of Area:** **≥ 25%** (Minimum). * **Hardness (Brinell):** Typically **300 - 360 HBW**. Approaching the upper limit for many conventional machining operations. * **Impact Energy (Charpy V-Notch):** **MUST be explicitly specified.** Base standard does not require it. For this grade, impact properties are a key purchasing parameter. Typical specifications might require **15-20 ft-lb (20-27 J) at room or low temperature**, though achieving this at 130 ksi tensile is challenging and requires precise tempering. * **Fracture Toughness (K1C):** Often a more relevant metric than Charpy for such high-strength materials. Can be specified as a supplementary requirement. **Product Features** 1. **Extreme Strength-to-Weight Ratio:** Enables radical weight savings or the design of components to withstand extraordinary static and fatigue loads. 2. **High Hardness & Wear Resistance:** Offers inherent resistance to abrasive wear and deformation under high contact stresses. 3. **Controlled Fracture Resistance:** When properly processed, it can achieve adequate toughness for many high-strength applications, though it is inherently more brittle than lower-strength steels. 4. **Weldability (Highly Restricted):** Welding is **generally not recommended** and should be avoided in design. If absolutely necessary, it requires extreme measures: very high pre-heat (often >600°F / 315°C), post-heat, use of meticulously controlled low-hydrogen/high-nickel filler metals, and **mandatory, immediate Post-Weld Heat Treatment (PWHT)**. Weld repairs should be planned and executed by specialists. 5. **Machinability:** **Very Difficult to Poor.** Requires state-of-the-art CNC machines, premium carbide or cubic boron nitride (CBN) tooling, very conservative speeds/feeds, and often necessitates grinding or electrical discharge machining (EDM) for finishing. **Typical Applications** Reserved for the most critical, highly stressed components where performance outweighs cost and fabrication complexity. * **Aerospace & Defense:** **Landing gear components, missile launch canisters, armored vehicle turret rings, helicopter rotor hubs**. * **Oil & Gas (Downhole):** **Heavy-duty tool joints, mandrels, and components for ultra-deep drilling**. * **High-Performance Racing:** **Critical suspension uprights, wheel hubs, gearbox casings, and chassis components** in top-tier motorsport. * **Specialized Industrial Machinery:** **Giant press columns and platens, anvils for high-energy forging, rolls for extreme cold rolling**. * **Advanced Robotics:** **Structural members and joints for high-payload, dynamic robotic arms**. **Casting & Quality Supplements** * **Casting Process:** Requires high-integrity methods such as **vacuum-assisted investment casting** or **electroslag remelting (ESR)** for the highest quality to minimize inclusions and segregation. * **Heat Treatment:** The cycle is proprietary and critical. May involve **austempering** or **multiple tempering cycles** to optimize toughness. * **Quality Assurance:** Beyond standard tensile testing, premium NDT is standard. * **Essential Supplementary Requirements:** * **Impact Testing (S-series):** Specify temperature and minimum energy. * **Non-Destructive Testing:** **100% Radiographic (R1)** and/or **Ultrasonic (U1)** inspection per stringent acceptance criteria. * **Hardness and Microstructure:** Hardness surveys and micrographic examination to ensure uniformity and proper tempering. --- **Critical Procurement & Design Note** 1. **Expert Foundry Partnership is Mandatory:** This is not an off-the-shelf material. Success requires collaboration with a foundry specializing in ultra-high-strength steel castings from the design phase. 2. **Toughness is a Purchase, Not a Given:** The **Charpy or Fracture Toughness requirement is the single most important supplementary specification**. Define the service temperature and minimum acceptable energy. 3. **Design for Castability & Heat Treatment:** Minimize drastic section changes to avoid cracking during quenching. Design must accommodate distortion from aggressive heat treatment. 4. **Avoid Welding in Design:** This should be a primary design constraint. Use bolted or mechanical connections where possible. 5. **Complete Order Specification:** *"ASTM A148 Grade 130-115, Quenched and Tempered. Supplementary Requirements: S1 – Charpy V-Notch, 15 ft-lb (20 J) min at 70°F (21°C); U1 – Ultrasonic Examination to Class 1 per ASTM A609; R1 – Radiographic Examination to Class 1 per ASTM E446; H1 – Hardness Survey; Chemical Analysis Report."* 6. **Risk vs. Reward:** This grade pushes the boundaries of cast steel technology. Its use is justified only when no other material can meet the performance requirement, and the associated cost, lead time, and technical risk are acceptable. -:- For detailed product information, please contact sales. -: ASTM A148 Grade 130-115 Cast Steel Specification Dimensions Size： Diameter 20-1000 mm Length <5850 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 A148 Grade 130-115 Cast Steel Properties -:- For detailed product information, please contact sales. -:

Applications of ASTM A148 Grade 130-115 Cast Steel Tube -:- For detailed product information, please contact sales. -: Chemical Identifiers ASTM A148 Grade 130-115 Cast Steel Tube -:- For detailed product information, please contact sales. -:

Packing of ASTM A148 Grade 130-115 Cast Steel Tube -:- 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 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 2321 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