ASTM A694 F52 High-Yield Carbon SteelForging Metallurgy & Specs
High-Yield 52 ksi Forged Flanges & Fittings for High-Pressure Transmission Lines. Hot-forged and precision-machined in Rajkot, Gujarat strictly up to 50 kg max piece weight with 100% Optical Emission Spectrometry (OES) PMI testing and EN 10204 3.1 MTC compliance.
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ASTM A694 F52 High-Yield Carbon Steel (UNS K03014 / 1.0562 / P355QH) offers a minimum tensile strength of 455 MPa min (66 ksi) and yield strength of 360 MPa min (52 ksi) with 170 – 220 HBW hardness. Manufactured by Jayesh Forge in Rajkot, Gujarat strictly up to 50 kg per piece, this alloy features Standard carbon steel; sour gas HIC/SSCC testing certified per NACE MR0175. Tested per ASTM A388 Level II ultrasonic standards with EN 10204 3.1 MTC inspection.
ASTM A694 F52 High-Yield Carbon Steel Chemical Analysis (% by Weight)
| Element | Chemical Symbol | Minimum (%) | Maximum (%) | Specification Role |
|---|---|---|---|---|
| Carbon | C | — | 0.26% | Controls base tensile strength & core hardness |
| Manganese | Mn | — | 1.40% | Combines with sulfur, increases hardenability and hot workability |
| Phosphorus | P | — | 0.03% | Restricted to prevent temper embrittlement |
| Sulfur | S | — | 0.03% | Strictly controlled for cleaner grain flow and micro-cleanliness |
| Silicon | Si | 0.15% | 0.35% | Deoxidizer during melting; improves high-temperature scaling resistance |
| Vanadium | V | — | 0.08% | Grain refiner; precipitates secondary carbonitrides for creep strength |
| Niobium | Nb | — | 0.04% | Stabilizes against intergranular weld-decay corrosion |
* Ladle chemical analysis verified using optical emission spectrometer (OES) calibrated to NIST certified reference materials. Full chemical results recorded on EN 10204 3.1 MTC.
ASTM A694 F52 High-Yield Carbon Steel Mechanical Properties
Ultimate breaking stress threshold
Elastic deformation limit
Plastic ductility before rupture
Surface indentation resistance
Cross-sectional necking ductile ratio
Dynamic fracture energy absorption
Thermal Cycle & Machining Parameters
1150°C – 880°C
Quenched & Tempered (water/polymer quench from 900°C followed by tempering at 600°C+)
Standard carbon steel; sour gas HIC/SSCC testing certified per NACE MR0175
Machinability: 62% of AISI 1212 • Good weldability; carbon equivalent (CE) strictly controlled below 0.43 for field line welding
International Equivalent Material Grades
Forged Components Manufactured in A694 F52
High-Yield Transmission Flanges
Class 300# to 900# high-yield flanges matching API 5L X52 pipeline wall thicknesses.
A694 F52 Frequently Asked Technical Questions
Jayesh Forge maintains a strict maximum Carbon Equivalent (CE) of ≤0.42% (IIW formula) to guarantee exceptional field weldability on cross-country pipelines without pre-heat cracking.
Related Industrial Metallurgy Specifications
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