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ASTM A182 Grade F316L / UNS S31603 Valve

Stainless Steel 316L (Low Carbon Forged)

ASTM A182 Grade F316L is the low-carbon variant of Type 316 austenitic stainless steel, with a maximum carbon content of 0.

Form

Forged

Max Temp

+870°C (continuous) / +925°C (intermittent)

Min Temp

−196°C (−321°F)

Category

Stainless Steel

What is ASTM A182 Grade F316L / UNS S31603?

ASTM A182 Grade F316L / UNS S31603 (Stainless Steel 316L (Low Carbon Forged)) is a stainless steel valve material. ASTM A182 Grade F316L is the low-carbon variant of Type 316 austenitic stainless steel, with a maximum carbon content of 0.03% versus 0.08% for standard F316. Temperature range: −196°C to +870°C (−321°F to +1600°F, continuous); max 925°C intermittent.

Form:
forged
Max Temp:
+870°C (continuous) / +925°C (intermittent)
Min Temp:
−196°C (−321°F)

Chemical Composition - ASTM A182 Grade F316L / UNS S31603

C ≤ 0.03%, Cr 16–18%, Ni 10–14%, Mo 2–3%, Mn ≤ 2.00%, Si ≤ 1.00%. UNS S31603.

Temperature Range

−196°C to +870°C (−321°F to +1600°F, continuous); max 925°C intermittent

Maximum Temperature

+870°C (continuous) / +925°C (intermittent)

Minimum Temperature

−196°C (−321°F)

Vajra Industrial Solutions manufactures and supplies valves in ASTM A182 Grade F316L / UNS S31603 (Stainless Steel 316L (Low Carbon Forged)) for pharmaceutical water systems: wfi, pw, hpw, clean steam, with EN 10204 3.1 material traceability on every order.

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Send your size, class and end connection — we'll quote ASTM A182 Grade F316L / UNS S31603 (Stainless Steel 316L (Low Carbon Forged)) valves with full MTCs in 24 hours.

Equivalent Grades - ASTM A182 Grade F316L / UNS S31603

StandardEquivalent Grade
UNSS31603
ASTMA182 F316L (forged), A351 CF3M (cast equivalent)
ENX2CrNiMo17-12-2 / 1.4404
ISSS 316L per IS 6528

Suitable Services

Pharmaceutical water systems: WFI, PW, HPW, clean steam

Food and beverage processing: dairy, beverages, edible oils

Chemical plant: organic acids, mild inorganic acids, solvents

Water treatment: demineralised water, RO permeate

Cryogenic service (to −196°C): LNG, LIN, LOX, LAr

Not Suitable For

Concentrated chloride solutions at elevated temperature - risk of SCC

Strong reducing acids (HCl, H₂SO₄ > 10%)

Temperatures above 870°C (continuous service)

Valve Body Applications

Pharmaceutical and biotech valve bodies (USP Class VI, 3-A compliant)

Food and beverage processing valve bodies (EHEDG, HACCP)

Chemical plant forged valve bodies for corrosive media

Water treatment and reverse osmosis plant valves

Trim Applications

Ball valve balls - polished SS316L (Ra ≤ 0.8 μm for pharmaceutical)

Gate valve seats and wedge faces

Globe valve stems and discs for chemical service

Typical Valve Types in ASTM A182 Grade F316L / UNS S31603

Ball valves: pharma and chemical, Class 150–600

Butterfly valves: sanitary, DN25–DN300

Diaphragm valves: pharmaceutical WFI and CIP service

Needle valves: instrumentation, Class 800–6000 psi

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Reviewed by Materials Engineering, Vajra Industrial SolutionsDiscipline: Valve Metallurgy & Materials SelectionLast reviewed: 20 June 2026

Connected Engineering

Need ASTM A182 Grade F316L / UNS S31603 Valves?

We supply ASTM A182 Grade F316L / UNS S31603 (Stainless Steel 316L (Low Carbon Forged)) valves with full certification documentation — EN 10204 3.1/3.2 MTCs and hydrotest certs as standard.