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AISI 316L Stainless Steel Disk

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Grade: AISI 316L Composition: Fe/Cr 18/Ni10/Mo 3 Form: Disk Material: Stainless Steel UNS Number: S31603 Commodity: Alloys Temper: Annealed
AISI 316L Stainless Steel Disk (UNS S31603) is a low-carbon molybdenum-bearing austenitic stainless steel disk with carbon held to 0.03 wt% maximum, preserving intergranular corrosion resistance in welded and thermally processed assemblies while delivering the enhanced pitting and crevice corrosion resistance of the 316 alloy system. With 16–18% chromium, 10–14% nickel, and 2–3% molybdenum, it is the standard disk grade for chemical processing, marine engineering, biomedical devices, and aerospace systems where chloride exposure and welded construction are both present. Specific applications include valve seats in cryogenic systems, load-bearing elements in high-vacuum assemblies, and corrosion-resistant precision components for sterile production environments. In research, 316L disks are widely used in tribological studies, surface engineering experiments, and qualification testing for high-energy physics and aerospace parts.
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Key Features

AISI 316L Stainless Steel Disk (UNS S31603) is a low-carbon molybdenum-bearing austenitic stainless steel disk with carbon held to 0.03 wt% maximum, preserving intergranular corrosion resistance in welded and thermally processed assemblies while delivering the enhanced pitting and crevice corrosion resistance of the 316 alloy system:

Preserves Intergranular Corrosion Resistance in Welded Assemblies

Carbon held to 0.03 wt% maximum preserves intergranular corrosion resistance in welded and thermally processed assemblies, eliminating the weld sensitization risk present in standard 316.

Standard Disk Grade for Chloride-Exposed Welded Construction

With 16-18% chromium, 10-14% nickel, and 2-3% molybdenum, AISI 316L is the standard disk grade for chemical processing, marine engineering, biomedical devices, and aerospace systems where chloride exposure and welded construction are both present.

Enhanced Pitting & Crevice Corrosion Resistance

AISI 316L Disk delivers the enhanced pitting and crevice corrosion resistance of the 316 alloy system, suiting it to valve seats in cryogenic systems and load-bearing elements in high-vacuum assemblies.

Suited to Sterile Production Environments

Corrosion-resistant precision components for sterile production environments benefit from the combination of weld-sensitization resistance and enhanced corrosion performance characteristic of AISI 316L Disk.

Qualification Testing for High-Energy Physics & Aerospace

AISI 316L Disk is widely used in qualification testing for high-energy physics and aerospace parts, where its weld-friendly, chloride-resistant composition meets stringent reliability requirements.

Industrial Applications

AISI 316L Stainless Steel Disk is used across chemical processing, marine engineering, biomedical, and aerospace sectors where chloride exposure and welded construction are both present:

Valve Seats in Cryogenic Systems
Used as valve seats in cryogenic systems, where preserved intergranular corrosion resistance in welded assemblies combined with enhanced pitting and crevice corrosion resistance ensures reliable sealing performance.
Load-Bearing Elements in High-Vacuum Assemblies
Applied as load-bearing elements in high-vacuum assemblies, where the standard disk grade status of 316L for chloride exposure and welded construction ensures dependable structural performance.
Corrosion-Resistant Precision Components for Sterile Production Environments
Used in corrosion-resistant precision components for sterile production environments, where weld-sensitization resistance combined with enhanced corrosion performance meets stringent hygiene requirements.
Qualification Testing for High-Energy Physics & Aerospace Parts
Widely used in qualification testing for high-energy physics and aerospace parts, where the disk's weld-friendly, chloride-resistant composition supports reliable performance validation.
Tribological & Surface Engineering Research
Used in tribological studies and surface engineering experiments where the low-carbon, molybdenum-bearing composition is a deliberate experimental variable.
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Available Configurations

Properties common to all products in this list

Grade: AISI 316L Composition: Fe/Cr 18/Ni10/Mo 3 Form: Disc Material: Stainless Steel UNS Number: S31603 Commodity: Alloys Temper: Annealed

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Tolerances

Disc
Thickness <0.01mm ±25%
Thickness 0.01mm - 0.05mm ±15%
Thickness >0.05mm ±10%
Diameter ±0.5mm