ISO 9001:2015 & IATF 16949 Certified
Stainless SteelUNS S31603DIN/EN: 1.4404

Stainless Steel 316L / ASTM A182 F316LForging Metallurgy & Specs

Low-Carbon Marine & Sour Gas (NACE MR0175) Grade Stainless Steel. 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.

ASTM A388 UT Level IIUp to 50 kg Max Piece WeightRajkot, Gujarat (240 km Mundra)

Instant Material Engineering Data

Download verified engineering data sheets or initiate an RFQ directly with our metallurgical desk.

Quick AnswerFeatured

Stainless Steel 316L / ASTM A182 F316L (UNS S31603 / 1.4404 / X2CrNiMo17-12-2) offers a minimum tensile strength of 485 MPa min (70 ksi) and yield strength of 170 MPa min (25 ksi) with 140 – 187 HBW max hardness. Manufactured by Jayesh Forge in Rajkot, Gujarat strictly up to 50 kg per piece, this alloy features NACE MR0175 / ISO 15156 certified for sour gas containing H2S and chlorides. Tested per ASTM A388 Level II ultrasonic standards with EN 10204 3.1 MTC inspection.

1. ASTM / EN Chemical Composition Limits

Stainless Steel 316L / ASTM A182 F316L Chemical Analysis (% by Weight)

100% OES / PMI Verified
ElementChemical SymbolMinimum (%)Maximum (%)Specification Role
CarbonC—0.03%Controls base tensile strength & core hardness
ChromiumCr16.00%18.00%Forms passive chromium oxide layer for oxidation & corrosion resistance
NickelNi10.00%14.00%Improves notch toughness, cryogenic ductility & hardenability
MolybdenumMo2.00%3.00%Prevents chloride pitting and enhances high-temperature creep strength
ManganeseMn—2.00%Combines with sulfur, increases hardenability and hot workability
SiliconSi—1.00%Deoxidizer during melting; improves high-temperature scaling resistance
PhosphorusP—0.04%Restricted to prevent temper embrittlement
SulfurS—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.

2. Mechanical Strength & Hardness Guarantees

Stainless Steel 316L / ASTM A182 F316L Mechanical Properties

Tensile Strength (Rm)485 MPa min (70 ksi)

Ultimate breaking stress threshold

Yield Strength (Rp 0.2%)170 MPa min (25 ksi)

Elastic deformation limit

Elongation in 50mm (A5)30% min

Plastic ductility before rupture

Hardness Parameter140 – 187 HBW max

Surface indentation resistance

Reduction of Area (Z%)50% min

Cross-sectional necking ductile ratio

Impact Toughness (Charpy V-Notch)>100 Joules at -196°C (-320°F)

Dynamic fracture energy absorption

3. Forging & Thermal Processing Standards

Thermal Cycle & Machining Parameters

Hot Forging Temperature Range:

1200°C – 920°C

Standard Heat Treatment Cycle:

Solution treated at 1040°C – 1120°C with instant water quench to ensure zero carbide precipitation

Corrosion & Sour Gas Behavior:

NACE MR0175 / ISO 15156 certified for sour gas containing H2S and chlorides

Machinability & Weldability Index:

Machinability: 42% of AISI 1212 • Outstanding weldability with ER316L filler wire; zero post-weld sensitization

4. Global Standards Cross-Reference

International Equivalent Material Grades

USA (ASTM / ASME)ASTM A182 / ASME SA182 Grade F316L
Unified Numbering (UNS)UNS S31603
Europe (DIN / EN)1.4404 / X2CrNiMo17-12-2
Material Density8 g/cm³
EN / DIN (Europe)1.4404 (X2CrNiMo17-12-2)
BS (United Kingdom)316S11
JIS (Japan)SUS316L
5. Product Applications & Capabilities

Forged Components Manufactured in SS 316L

Strictly Up to 50 kg Max Piece Weight
Flanges

NACE Sour Service Flanges

Class 150# to 2500# flanges certified to NACE MR0175.

Up to 50 kg maxView Specs
Machining

Precision CNC Machined Bushes

Corrosion-proof marine bushings with mirror Ra 0.4 finish.

Up to 50 kg maxView Specs
Key Industrial Applications:
Sour Crude Oil Extraction LinesOffshore Topside Chemical InjectionDesalination Reverse Osmosis ManifoldsBio-Pharmaceutical Storage Vessels
Procurement & Engineering Inquiries

SS 316L Frequently Asked Technical Questions

Yes, when solution annealed and with hardness below 22 HRC (197 HBW), Jayesh Forge SS 316L forgings are 100% compliant with NACE MR0175 / ISO 15156 for wet H2S sour gas environments.

Related Industrial Metallurgy Specifications

Explore Jayesh Forge Engineering & Sourcing Catalogs

Browse our manufacturing lines, dimensional tables, and quality protocols strictly up to 50 kg max piece weight.

Request Commercial Quotation for SS 316L Forgings

Manufactured in Rajkot, Gujarat strictly up to 50 kg max piece weight. 4-hour quote turnaround committed.