ASTM A350 LF2 Forged Fittings | ASTM A350 LF2 Forged Fittings | ASTM A350 LF2 Carbon Steel Forged Fittings | ASTM A350 LF2 Socket Weld Fittings
Table of Content
- # What are ASTM A350 LF2 Forged Fittings?
- # How does the ASTM A350 LF2 Forged Fittings function?
- # ASTM A350 LF2 Forged Fittings Specifications Table
- # Chemical Features of ASTM A350 LF2 Forged Fittings
- # Mechanical Properties of ASTM A350 LF2 Forged Fittings
- # Types of ASTM A105 Forged Fittings
- # Equivalent Grades of ASTM A350 LF2 Forged Fittings
- # ASTM A350 LF2 Forged Fittings Price in India
- # Industrial Applications of ASTM A350 LF2 Forged Fittings
- # Why Choose Jay Steel Corporation to buy ASTM A350 LF2 Forged Fittings?
- # FAQs
What are ASTM A350 LF2 Forged Fittings?
How does the ASTM A350 LF2 Forged Fittings function?
ASTM A350 LF2 Forged Fittings Specifications Table
- Standard : ASTM A350 – Steel forgings for low-temperature service
- Grade: LF2 (Class 1 & Class 2)
- Product Type : Forged Fittings (Socket Weld & Threaded)
- Material Type: Low-Temperature Carbon Steel
- UNS Number: K03011
- Manufacturing Method : Forged and machined
- Applications: Cryogenic and low-temperature piping, LNG systems, petrochemical service
- Chemical Composition: C: 0.30% max , Mn: 0.60–1.35% , P: 0.035% max , S: 0.040% max , Si: 0.15–0.30% , Ni: 0.40% max
- Mechanical Properties: Tensile: 485 MPa min , Yield: 250 MPa min , Elongation: 22% min
- Impact RequirementCharpy V-Notch at –46°C (–50°F) required
- Heat Treatment: Normalized or Normalized & Tempered (Class 1) , Quenched & Tempered (Class 2)
- Pressure Rating: Conforms to ASME B16.11 Classes
- Dimensional Standards: ASME B16.11
- Types of Fittings: Elbows, Tees, Couplings, Unions, Caps, Reducers, Plugs
- End Connections: Socket Weld (SW) , Threaded (NPT / BSP)
- Surface Finish: Smooth machined finish with rust protection
- Testing Requirements: Tensile, Impact, Hardness, Hydrostatic, and NDE (optional)
Chemical Features of ASTM A350 LF2 Forged Fittings
Mechanical Properties of ASTM A350 LF2 Forged Fittings
| Property | Requirement / Value |
| Tensile Strength (Minimum) | 485 MPa (70,000 psi) |
| Yield Strength (Minimum) | 250 MPa (36,000 psi) |
| Elongation (Minimum) | 22% |
| Reduction of Area (Minimum) | 30% |
| Hardness (Maximum) | 197 HBW |
| Impact Toughness Requirement | Mandatory Charpy V-Notch test at –46°C (–50°F) |
| Fracture Toughness | Excellent ductility and impact resistance due to low-temperature carbon steel chemistry |
| Heat Treatment Condition | Class 1: Normalized or Normalized & Tempered • Class 2: Quenched & Tempered |
| Ductility | High ductility suitable for forming, threading, and machining |
| Low-Temperature Performance | Retains high toughness and strength at cryogenic and sub-zero temperatures |
Types of ASTM A350 LF2 Carbon Steel Forged Fittings
The different Types of ASTM A350 LF2 Carbon Steel Forged Fittings are given below:
Carbon Steel A350 LF2 Forged Elbows
Carbon Steel A350 LF2 Forged Tee
Carbon Steel A350 LF2 Forged Cross
Carbon Steel A350 LF2 Forged Couplings
Carbon Steel A350 LF2 Forged Unions
Carbon Steel A350 LF2 Forged Pipe Caps
Carbon Steel A350 LF2 Forged Plugs
Carbon Steel A350 LF2 Forged Bushings
Equivalent Grades of ASTM A350 LF2 Forged Fittings
| Standard | Equivalent Grade | Notes |
| ASTM | ASTM A350 Grade LF2 | Original specification for low-temperature carbon steel forgings |
| ASME | ASME SA350 Grade LF2 | ASME pressure-grade equivalent used in boilers, pressure vessels, and piping |
| UNS | K03011 | Unified Numbering System designation for LF2 material |
| EN / DIN | P265GH / 1.0425 (approx.) | Closely comparable European grade used for pressure applications; chemistry is similar but not identical |
| BS (British Standard) | 1503-161-430A (approx.) | British pressure steel equivalent with similar strength levels |
| JIS (Japanese) | SF440A | Japanese forged carbon steel grade comparable in strength and application |
| GOST (Russian) | 20Г / 20 (approx.) | Russian carbon steel grades used for pressure equipment; often referenced as practical equivalents |
ASTM A350 LF2 Forged Fittings Price in India
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Industrial Applications of ASTM A350 LF2 Forged Fittings

Why Choose Jay Steel Corporation to buy ASTM A350 LF2 Forged Fittings?
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FAQs
What is ASTM A350 LF2 material used for in forged fittings?
Typically, LF2 Forged Fittings ASTM A350 is generally used for manufacturing forged fittings designed for low-temperature and high-pressure service.
Are ASTM A350 LF2 Forged Fittings suitable for low-temperature service?
Yes because LF2 Forged Fittings ASTM A350 has been engineered and certified for use under low temperature.
What are the types of ASTM A350 LF2 Forged Fittings available?
Some of the few types of ASTM A350 LF2 Carbon Steel Forged Fittings are given below:
- Elbows
- Tees
- Crosses
- Couplings
- Unions
- Caps
- Plugs & Bushings
- Reducers
- Swage Nipples
How do ASTM A350 LF2 Forged Fittings differ from ASTM A105 fittings?
Usually, LF2 Forged Fittings differs from ASTM A105 fittings in following ways given below:
- Impact Testing Requirements
- Temperature Service
- Heat Treatment
- Mechanical Toughness
- Applications
- Material Chemistry
What are the standard dimensions and pressure ratings for ASTM A105 forged fittings?
Typically, the pressure ratings and standard dimensions for Forged Fittings ASTM A105 are given below:
- Pressure Ratings: Class 2000, Class 3000, Class 6000, Class 9000
- Dimensional Standards range from 1/8 inch to 4 inches (DN 6 to DN 100)








