Product Overview – ASTM A333 Grade 6 LTCS Seamless Pipes
ASTM A333 Grade 6 seamless pipes are specifically engineered for low temperature service, where maintaining toughness and preventing brittle failure is essential.
Grade 6 is the most widely used grade in the ASTM A333 specification,offering a strong balance of mechanical strength, toughness, and weldability.
These pipes undergo mandatory Charpy impact testing at low temperaturesensuring reliable performance in extreme environments.
Compared to lower grades, Grade 6 provides higher strength and better performance under pressure, making it suitable for critical industrial systems.
They are extensively used in LNG plants, cryogenic storage systems, offshore platforms, and cold-region pipelines.
Standard & International Identification - ASTM A333 Grade 6 LTCS Seamless Pipes
Technical Specifications – ASTM A333 Gr 6 Pipes
| Pipe Type: | Seamless LTCS Pipes |
| Manufacturing Process: | Hot Rolled / Cold Drawn → Normalized → Tested |
| Outer Diameter: | 10 mm to 600 mm |
| Wall Thickness: | 2 mm to 75 mm |
| Length: | Single Random Length/Double Random Length/Custom Cut Length |
| Surface Finish: | Black Painted/Varnished/Anti-Corrosion Coating |
| Testing Methods: | Charpy Impact Test (Low Temperature),Hydrostatic Test,Ultrasonic Testing,Radiographic Testing (Optional),PMI Testing |
| Certification : | EN 10204 3.1 / 3.2 MTC |
Third Party Inspection Available
All specifications are in accordance of ASTM A333 standards. Mechanical and chemical values are as per standard limits. Mill Test Certificates (MTC) available upon request.
Chemical Composition – ASTM A333 Grade 6
(As per ASTM specification)
| Element | Max (%) |
|---|---|
| Carbon (C): | 0.30% |
| Manganese (Mn): | 0.29 – 1.06% |
| Silicon (Si): | 0.10% |
| Phosphorus (P): | 0.025% |
| Sulfur (S): | Max 0.025% | Iron : | Balance |
Note: The above composition ensures ASTM A333 Grade 6 pipes maintain excellent toughness and strength in low temperature conditions.
Mechanical Properties – ASTM A333 Gr 6 Pipes
| Property | Minimum Value |
|---|---|
| Tensile Strength | 415 MPa |
| Yield Strength | 240 MPa |
| Elongation | 30% |
| Impact Test | Mandatory at Low Temperature |
These mechanical properties enable ASTM A333 Grade 6 pipes to perform reliably in cryogenic and sub-zero environments without risk of brittle fracture.
Low Temperature Performance & Engineering Advantage
ASTM A333 Grade 6 is designed for extreme service conditions.
- Why it is the industry standard:
- 🔸High impact toughness at low temperatures
- 🔸Resistance to brittle failure
- 🔸Suitable for pressure and temperature variations
- 🔸Excellent weldability for fabrication
- 🔸Reliable for critical piping system
This makes it the first choice in LTCS applications worldwide.
Industry Applications (Critical Cold Service) of ASTM A333 Grade 6 pipes
- Where ASTM A333 Grade 6 LTCS pipes are used:
- 🔸LNG & Cryogenic Plants
- 🔸Oil & Gas Pipelines (Cold Regions)
- 🔸Offshore Platforms
- 🔸Petrochemical & Refinery Units
- 🔸Refrigeration Systems
- 🔸Low Temperature Process Piping
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