ASTM A105 Flanges | ASTM A105 Forged Flanges | A105 Slip On Flanges | A105 Weld Neck Flanges | A105 Blind Flanges | A105 Socket Weld Flanges
Table of Content
- # What are ASTM A105 Flanges ?
- # ASTM A105 Flanges Specifications Table
- # Chemical Features of ASTM A105 Flanges
- # Mechanical Properties of ASTM A105 Flanges
- # Types of ASTM A105 Flanges
- # Equivalent Grades of ASTM A105 Flanges
- # Industrial Applications of ASTM A105 Flanges
- # Why Choose Jay Steel Corporation to buy ASTM A105 Flanges ?
- # FAQs
What are ASTM A105 Flanges?
ASTM A105 Flanges Specifications Table
- Standard : ASTM A105 / ASME SA105
- Product : Carbon Steel Forgings for Piping Components
- Material Type : Carbon Steel
- Primary Use : Forged flanges, fittings, valves, and other pressure-containing parts
- Heat Treatment : Normalized (required)
- Applicable Codes : ASME B16.5, ASME B16.47, ASME Section I, II, VIII
- Temperature Range : −29°C to 425°C (−20°F to 800°F) typical service range
- Testing Requirements: PMI/Optical Emission, Ultrasonic, Magnetic Particle, Hydrostatic Pressure Tests
Chemical Features of ASTM A105 Flanges
| Element | Composition (%) |
| Carbon (C) | Max. 0.35 |
| Manganese (Mn) | 0.60 – 1.05 |
| Phosphorus (P) | Max. 0.035 |
| Sulfur (S) | Max. 0.040 |
| Silicon (Si) | 0.10 – 0.35 |
| Copper (Cu) | Max. 0.40 |
| Nickel (Ni) | Max. 0.40 |
| Chromium (Cr) | Max. 0.30 |
| Molybdenum (Mo) | Max. 0.12 |
| Vanadium (V) | Max. 0.08 |
| Carbon Equivalent (CE) | Max. 0.47 (typically specified for weldability) |
Mechanical Properties of ASTM A105 Flanges
Types of ASTM A105 Flanges
Usually, Flanges A105 are available in various forms. They are given below:
Carbon Steel A105 Slip on Flanges
Carbon Steel A105 Blind Flanges
Carbon Steel A105 Weld Neck Flanges
Carbon Steel A105 Socket Weld Flanges
Carbon Steel A105 Lap Joint Flanges
Carbon Steel A105 Orifice Flanges
Equivalent Grades of ASTM A105 Flanges
| Standard / Country | Equivalent Grade |
| ASTM / ASME (USA) | ASTM A105 / ASME SA 105 |
| DIN (Germany) | DIN 17243 / DIN 17100 C22.8 |
| EN (Europe) | EN 10222-2 P235GH |
| BS (UK) | BS 970 070M20 |
| IS (India) | IS 2002 Grade II |
| JIS (Japan) | JIS G4051 S20C |
| GB (China) | GB/T 699 20# |
| AFNOR (France) | AFNOR NF A35-501 C22 |
| UNI (Italy) | UNI C22 |
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Industrial Applications of ASTM A105 Flanges
Why Choose Jay Steel Corporation ?
FAQs
What is ASTM A105 Carbon Steel Flange used for?
Typically, A105 Flanges are used to mainly connect pipes, valves, pumps, and other equipment in high-pressure and high-temperature piping systems.
What are the types of ASTM A105 Flanges available?
There are few Types of ASTM A105 Flange that are given below:
- Slip-On (SO) Flange
- Weld Neck (WN) Flange
- Socket Weld (SW) Flange
- Blind (BL) Flange
- Threaded (TH) Flange
- Lap Joint (LJ) Flange
- Orifice Flange
- Long Weld Neck (LWN) Flange
What is the difference between ASTM A105 and ASTM A350 LF2 Flanges?
The difference between ASTM A105 and ASTM A350 LF2 Flanges are given in the tabular form below:
| Parameter | ASTM A105 Flanges | ASTM A350 LF2 Flanges |
| Material Type | Forged Carbon Steel | Forged Carbon Steel (Low-Temperature Grade) |
| Temperature Range | Ambient to high temperatures | Low-temperature service |
| Minimum Design Temperature | Typically above 0°C | Down to –46°C |
| Impact Testing | Not mandatory | Mandatory Charpy V-notch test |
| Toughness | Moderate | High notch toughness |
| Heat Treatment | As-forged / Normalized | Normalized / Quenched & Tempered |
| Carbon Content | Higher than LF2 | Lower carbon for better toughness |
| Pressure Rating | Suitable for standard pressure systems | Suitable for cryogenic & low-temp pressure systems |
| Cost | More economical | Slightly higher due to testing & processing |
What is the pressure rating for ASTM A105 Flanges?
Typically, A105 Flanges ASTM pressure ratings are given in table below:
| ASME Class | Approx. Pressure Rating at Ambient Temperature* |
| Class 150 | ~285 psi (19.6 bar) |
| Class 300 | ~740 psi (51 bar) |
| Class 400 | ~990 psi (68 bar) |
| Class 600 | ~1480 psi (102 bar) |
| Class 900 | ~2220 psi (153 bar) |
| Class 1500 | ~3705 psi (255 bar) |
| Class 2500 | ~6170 psi (425 bar) |
How to check the quality and certification of ASTM A105 Flanges?
The process to check quality and certification of A105 Flanges ASTM are given below:
- Verify Material Test Certificate (MTC / MTR)
- Check Chemical Composition (ASTM A105 Limits)
- Confirm Mechanical Properties
- Visual & Dimensional Inspection
- Non-Destructive Testing (If Required)
- PMI (Positive Material Identification)
- Third-Party Inspection (Optional but Recommended)
- Check Compliance with Purchase Order & Codes