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What is ASTM A350 LF2 Flanges?
Quick answer
- Standard
- ASTM A350 / ASME SA350
- Minimum yield
- 250 MPa
- Product form
- Flanges
ASTM A350 LF2 covers carbon steel forgings for low-temperature service. Class 1 is impact tested at −46 °C, and it's matched to A333 Grade 6 pipe.
Key characteristics
- ASTM A350 LF2 covers carbon steel forgings for low-temperature service
What does the ASTM A350 LF2 Flanges specification cover?
ASTM A350 LF2 Flanges: summary
- Standard
- ASTM A350 / ASME SA350
- Product form
- Flanges
- Size range
- NPS ½" – 24" (B16.5), 26" – 60" (B16.47 Series A/B); Class 150, 300, 600, 900, 1500, 2500; EN 1092-1 PN 6 – PN 100 on request
- Certificates
- EN 10204 3.1; 3.2 on request
What are the mechanical properties of ASTM A350 LF2 Flanges?
| Property | Value |
|---|---|
| Tensile strength | 485 – 655 MPa |
| Yield strength | 250 MPa min |
Testing and documentation
- Specification
- ASTM A350 / ASME SA350
- Size range
- NPS ½" – 24" (B16.5), 26" – 60" (B16.47 Series A/B); Class 150, 300, 600, 900, 1500, 2500; EN 1092-1 PN 6 – PN 100 on request
- Finish
- Raised face (RF), flat face (FF) or ring-type joint (RTJ); serrated spiral or concentric face finish (typically 3.2 – 6.3 µm Ra)
- Ends
- Weld-neck bevel matched to pipe schedule; socket bore; threaded
Testing & documents
- Chemical and mechanical tests of the forging
- Dimensional inspection to ASME B16.5 / B16.47
- Hardness, impact and IGC tests as specified
- Ultrasonic testing of forgings on request
- EN 10204 3.1 certificate; 3.2 with third-party inspection
Where is ASTM A350 LF2 Flanges used?
Matching products
ASTM A350 LF2 Flanges is typically used with ASTM A333 Grade 6 pipe in the same piping class.
What to include in your enquiry
- Specification and grade: ASTM A350 LF2 Flanges
- Size, class and type
- Quantity and destination
- Tests and certificates (3.1 / 3.2)
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Frequently asked questions
What is ASTM A350 LF2 Flanges used for?
.
What is the minimum yield strength of ASTM A350 LF2 Flanges?
250 MPa (250 MPa min), with a minimum tensile strength of 485 – 655 MPa.
Which documents are supplied with ASTM A350 LF2 Flanges?
EN 10204 3.1 mill test certificate as standard, with 3.2 and third-party inspection on request.