Stainless Steel 304L / ASTM A182 F304LForging Metallurgy & Specs
Extra-Low Carbon Austenitic Stainless Steel for Severe Welded Chemical Environments. 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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Stainless Steel 304L / ASTM A182 F304L (UNS S30403 / 1.4306 / 1.4307 / X2CrNi18-9) offers a minimum tensile strength of 485 MPa min (70 ksi) and yield strength of 170 MPa min (25 ksi) with 135 – 187 HBW max hardness. Manufactured by Jayesh Forge in Rajkot, Gujarat strictly up to 50 kg per piece, this alloy features Immune to intergranular attack in as-welded condition across nitric acid and organic chemical lines. Tested per ASTM A388 Level II ultrasonic standards with EN 10204 3.1 MTC inspection.
Stainless Steel 304L / ASTM A182 F304L Chemical Analysis (% by Weight)
| Element | Chemical Symbol | Minimum (%) | Maximum (%) | Specification Role |
|---|---|---|---|---|
| Carbon | C | — | 0.03% | Controls base tensile strength & core hardness |
| Chromium | Cr | 18.00% | 20.00% | Forms passive chromium oxide layer for oxidation & corrosion resistance |
| Nickel | Ni | 8.00% | 12.00% | Improves notch toughness, cryogenic ductility & hardenability |
| Manganese | Mn | — | 2.00% | Combines with sulfur, increases hardenability and hot workability |
| Silicon | Si | — | 1.00% | Deoxidizer during melting; improves high-temperature scaling resistance |
| Phosphorus | P | — | 0.04% | Restricted to prevent temper embrittlement |
| Sulfur | S | — | 0.03% | Strictly controlled for cleaner grain flow and micro-cleanliness |
* 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.
Stainless Steel 304L / ASTM A182 F304L 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
1180°C – 900°C
Solution annealed at 1040°C – 1100°C, rapid water quench
Immune to intergranular attack in as-welded condition across nitric acid and organic chemical lines
Machinability: 45% of AISI 1212 • Outstanding weldability using ER308L filler; zero risk of weld-decay corrosion
International Equivalent Material Grades
Forged Components Manufactured in SS 304L
SS 304L Frequently Asked Technical Questions
Yes, Jayesh Forge routinely supplies dual-certified SS 304/304L forgings that satisfy the low carbon content of 304L (≤0.030%) while achieving the higher mechanical strength of standard 304 (tensile ≥515 MPa, yield ≥205 MPa).
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