ASTM A105
ASTM A105: Specifications | Grades & Standards | Product Types | Equivalent Grades | Chemical Composition | Mechanical Properties | Forged Fittings | Flanges | FAQ
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Midland Forge and Fittings Pvt. Ltd is a trusted manufacturer and supplier of ASTM A105 forged fittings & flanges, offering premium-quality products for industrial piping applications. Committed to precision engineering, rigorous quality control, and international standards compliance, we ensure that every flange delivered provides durability, reliability, and exceptional performance in critical piping systems.
Our vision is to be a globally recognized leader in A105 forged fittings manufacturing, delivering products that set the benchmark for quality, precision, and performance. Our mission is to provide high-performance A105 carbon steel flanges that meet international standards. By embracing advanced manufacturing technologies, sustainable practices, and continuous improvement, we ensure that our clients receive safe, durable, and efficient piping solutions, empowering industries to achieve operational excellence.
ASTM A105 forged fittings are manufactured through forging and precision machining to achieve superior mechanical properties, such as yield strength, impact resistance, and hardness. Forged fittings maintain tight tolerances on dimensions, weight, and thread geometry to ensure compatibility with piping systems. The process involves controlled forging, heat treatment, and surface finishing to eliminate internal defects and provide enhanced structural integrity. All forged fittings conform to ASTM A105/A105M requirements and are tested for chemical composition, tensile strength, and non-destructive examinations to guarantee reliability.
ASTM A105 flanges are high-precision carbon steel components manufactured to ASTM A105/A105M and ASME B16.5/B16.47 standards. Types include weld neck, slip-on, blind, socket weld, and threaded flanges, produced with tight flatness, concentricity, and bore alignment tolerances. The manufacturing process includes forging, machining, and heat treatment to achieve high tensile strength, yield strength, and toughness. Flanges undergo dimensional inspections, hardness testing, and chemical analysis to ensure compliance with international standards and maintain structural integrity for high-pressure connections.
ASTM A105 Threaded Elbow, Tee Specifications
CS A105 Industrial Flange– Grades & Standards
| Carbon Steel Grade | UNS No. | Applicable Standards | Typical Products |
|---|---|---|---|
| ASTM A105 | K02500 | ASTM A105, ASME B16.11, B16.5, MSS-SP-83 | Threaded Fittings, Forged Fittings, Flanges |
Carbon Steel A105 Products
CS A105 Socket weld Fittings Equivalent Grades
| Standard / Specification | Equivalent Grade / Material |
|---|---|
| ASTM / ASME | A105 / A105M |
| UNS (Unified Numbering System) | K02100 |
| EN / DIN | C22.8 / 1.0460 |
| JIS (Japanese Industrial Standards) | STPG 380, STPG 410 |
| GOST (Russian Standard) | 20K / 25K |
| BS (British Standard) | BS 1504-1 / 080A15 |
ASTM A105 Orifice Flange - Chemical Composition
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.35 max |
| Manganese (Mn) | 0.60–1.05 |
| Phosphorus (P) | 0.035 max |
| Sulfur (S) | 0.035 max |
| Silicon (Si) | 0.10–0.35 |
| Copper (Cu) | 0.40 max |
ASM A105 Fittings - Mechanical Properties
| Property | Typical Value |
|---|---|
| Tensile Strength (Ultimate) | 485–620 MPa (70–90 ksi) |
| Yield Strength (0.2% Offset) | 250 MPa min (36 ksi) |
| Elongation | 20% min in 50 mm |
| Hardness (Brinell) | 170–210 HB |
| Impact Strength (Charpy V-Notch) | 27 J min at 0°C (if specified) |
| Modulus of Elasticity | 200 GPa (approx.) |
| Poisson’s Ratio | 0.3 (typical) |
A105 Flanges – Industrial Piping Solutions with ANSI / ASME Compliance
CS A105 Forged Fittings: Threaded, Socket Weld
How does the forging process improve ASTM A105 fittings?
Hot forging aligns the grain flow along the stress direction, improving tensile strength, yield strength, and impact toughness.
Eliminates internal voids, porosity, and inclusions, producing dense, defect-free fittings.
Heat treatment after forging relieves residual stresses and enhances ductility.
Results in higher fatigue resistance compared to cast or welded fittings.
How do NDT methods ensure ASTM A105 reliability?
Ultrasonic Testing (UT): Detects internal voids, inclusions, or cracks.
Magnetic Particle Testing (MPT): Identifies surface or near-surface defects.
Radiographic Testing (RT): Confirms internal homogeneity in thick sections.
Hardness and impact testing verify mechanical integrity post-heat treatment.
Are ASTM A105 components interchangeable with equivalents?
Equivalent grades include UNS K02100, EN C22.8/1.0460, JIS STPG 380/410, GOST 20K/25K.
Chemical composition and mechanical properties are closely matched.
Substitution requires verification of mechanical requirements and dimensional tolerances to ensure performance and safety.