Manufacturer, Supplier & Exporter of ASTM A350 LF2 Round Bar
ASTM A350 LF2 Round Bar is a low-temperature carbon steel grade specified for forgings and machined components that must perform reliably at sub-ambient temperatures. As a material, A350 LF2 is chosen where good impact toughness and stable mechanical performance at low temperatures are required — common in valves, flanges, fittings, pressure vessel components and critical piping parts. Riddhi Siddhi Impex manufactures and supplies ASTM A350 LF2 Round Bar to meet these application needs, offering bars suited for forging, machining and final fabrication...
Riddhi Siddhi Impex, as a trusted manufacturer and domestic supplier, produces ASTM A350 LF2 Round Bar to strict quality control practices and offers documentation to support traceability. Material is supplied with standard mill test certificates (MTC) and can be provided with additional inspection and third-party certification on request to satisfy project and procurement specifications. The company emphasizes consistent metallurgical processing so bars deliver predictable toughness, weldability and dimensional accuracy for downstream operations..
From a physical and processing perspective, ASTM A350 LF2 Round Bars are produced to provide good weldability, reliable toughness at low temperatures and dimensional stability under fabrication. The bars are suitable for normalizing and common heat treatment routines used in forging and finishing operations. Riddhi Siddhi Impex offers value-added services such as sawing/cutting to length, center-less grinding, machining, chamfering, and protective packing to ensure the product reaches the shop floor ready for immediate use..
Available sizes and supply forms are kept flexible to meet project demands — Riddhi Siddhi Impex stocks a wide range of diameters and lengths of ASTM A350 LF2 Round Bar and can arrange special sizes or custom cut lengths for high-volume orders or urgent jobs. Whether your requirement is single prototype lengths or regular production volumes, the supplier can scale production and stocking to match delivery schedules across India. Typical supply options include raw turned bars, fully machined shafts, or forged blanks ready for finishing..
Applications for ASTM A350 LF2 Round Bar span oil & gas, petrochemical, power generation, cryogenic and general industrial equipment where low temperature service and impact resistance matter. The material is commonly used in manufacture of valve bodies, stems, studs, coupling components, forged flanges and similar critical parts. Riddhi Siddhi Impex’s engineering team can help specify the right bar condition and provide recommendations for machining allowances, heat treatment and surface protection based on final service conditions..
ASTM A350 LF2 Round Bar
Specification
| Product Name | ASTM A350 LF2 Round Bar |
|---|---|
| Manufacturer | Riddhi Siddhi Impex |
| Material Grade | ASTM A350 LF2 (Low Temperature Carbon Steel) |
| Forms Available | Round Bar, Forged Bar, Bright Bar, Peeled & Ground Bar |
| Standard | ASTM A350 / ASME SA350 |
| Size Range | 10 mm to 600 mm Diameter |
| Length | 1 Meter to 6 Meter (Custom Cut Lengths Available) |
| Condition | Hot Rolled, Annealed, Normalized, Quenched & Tempered |
| Surface Finish | Black, Bright, Rough Turned, Machined |
| Pipe Ends | Plain, Chamfered, or Customized |
| Applications | Forgings, Flanges, Fittings, Valves, Pressure Vessels, Oil & Gas Components |
Chemical Composition
| Element | Content (%) |
|---|---|
| Carbon (C) | 0.30 Max |
| Manganese (Mn) | 0.60 – 1.35 |
| Phosphorus (P) | 0.035 Max |
| Sulfur (S) | 0.040 Max |
| Silicon (Si) | 0.15 – 0.30 |
| Copper (Cu) | 0.40 Max |
| Nickel (Ni) | 0.40 Max |
| Chromium (Cr) | 0.30 Max |
| Molybdenum (Mo) | 0.12 Max |
Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength | ≥ 485 MPa |
| Yield Strength | ≥ 250 MPa |
| Elongation | ≥ 22% |
| Hardness | ≤ 197 HB |
| Impact Test (Charpy V-Notch) | Minimum 20 ft-lbs at -46°C |
Dimension Chart (Nominal)
| Diameter (mm) | Diameter (inch) | Available Length |
|---|---|---|
| 10 – 20 mm | 0.39" – 0.78" | Up to 6 m |
| 25 – 50 mm | 1" – 2" | Up to 6 m |
| 60 – 100 mm | 2.36" – 4" | Up to 6 m |
| 110 – 200 mm | 4.33" – 8" | Up to 6 m |
| 210 – 300 mm | 8.26" – 12" | Up to 6 m |
| 310 – 600 mm | 12.2" – 24" | Up to 6 m |
Equivalent Grades
| Standard | Grade |
|---|---|
| ASTM / ASME | A350 LF2 / SA350 LF2 |
| EN | P265GH / C22.8 (Approx.) |
| DIN | 1.0481 / 1.0460 |
| BS | 1503-161-430A |
Equivalent Standards
| Standard | Description |
|---|---|
| ASTM A350 | Forgings for Pressure Vessel Components at Low Temperatures |
| ASME SA350 | Low-Temperature Carbon Steel Forged Components |
| ASTM A105 | Equivalent for Some Forgings (Non-Low-Temperature) |
| EN 10222 | Steel Forgings for Pressure Purposes |
Other Types of Carbon Steel Bars
| Type | Description |
|---|---|
| A105 Carbon Steel Round Bar | Used for ambient temperature applications |
| EN8 Round Bar | Medium carbon steel for general engineering |
| EN19 Round Bar | High-strength alloy steel with chromium-molybdenum |
| ASTM A516 Grade 70 Bar | Boiler-quality carbon steel bar |
Logistics and pan-India distribution are a core strength: Riddhi Siddhi Impex supplies ASTM A350 LF2 Round Bar across major domestic markets including Mumbai, Delhi, Bengaluru (Bangalore), Hyderabad, Chennai, Kolkata, Pune, Ahmedabad, Surat, Vadodara, Rajkot, Nagpur, Indore, Bhopal, Jaipur, Kanpur, Lucknow, Agra, Varanasi, Amritsar, Chandigarh, Mysuru (Mysore), Udaipur, Jodhpur, Visakhapatnam, Coimbatore, Madurai, Kochi, Thiruvananthapuram, Mangalore and additional industrial hubs such as Dahej, Ankleshwar, Navsari, Valsad and Rajpipla. Local warehousing and fast dispatch options enable reduced lead times and easier on-site coordination..
Frequently Asked Questions (FAQs)
- Q1: What are the common applications of ASTM A350 LF2 Round Bar?
- A1: ASTM A350 LF2 Round Bars are commonly used in low-temperature service applications such as pressure vessels, flanges, valves, piping components, fittings, and oil & gas equipment.
- Q2: Do you provide custom sizes and machining for ASTM A350 LF2 Round Bars?
- A2: Yes, we offer custom diameters, cut-to-length sizes, machining, chamfering, and value-added processing based on your project requirements.
- Q3: Is ASTM A350 LF2 suitable for low-temperature environments?
- A3: Yes, ASTM A350 LF2 is specifically designed for low-temperature toughness, making it ideal for cryogenic and sub-zero applications.
- Q4: What certifications are provided with ASTM A350 LF2 Round Bars?
- A4: We provide MTC as per EN 10204/3.1, along with chemical analysis, mechanical test reports, hardness tests, and third-party inspection certificates on request.
Cities we have supplied our products to
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